Massey Ferguson brief is an American-owned major maker of agricultural products until recently situated in Brantford, Ontario, Canada. Massey transferred their headquarters to Buffalo, ny in 1997 before it was acquired by AGCO brand-new owner of former competition Allis-Chalmers. The current company was formed because of the 1953 merger of farm equipment brands Massey Harris of Canada and Britain's Ferguson business beneath the new-name Massey Harris Ferguson. In 1958, title is reduced to Massey Ferguson. Today Massey Ferguson is a brand name used by AGCO but its equipment remains a major seller worldwide.
Massey Ferguson developed many farming vehicles and also have a big share on the market around the world especially in European countries. In December 1957 the MF35, 1st Massey Ferguson branded tractor rolled from the factory floor. It absolutely was a Ferguson build that began its lifestyle in 1955 once the Ferguson 35, usually nicknamed "Gold stomach" because of the gold engine and gearbox. The 35s were massively popular and marketed throughout the UK, Australian Continent, Ireland in addition to united states of america. They certainly were followed by other very early products like the 65 (MK1 indirect injection) 65 (MK2 direct shot).
The next huge selling design ended up being the MF135, extensively preferred due to the dependability and energy compared with more tractors at that time. It was initial design inside MF 100 series. These included the MF 135, 145, 148, 150, 165, 168, 175, 178, 180, 185 and 188.The same time the MF 100 series arrived on the scene, the MF 1000 series ended up being introduced. These generally include the MF 1080, 1100, 1130 and 1150. Later on came the MF 550, 560, 565, 575, 590, 595 (500 series). Through the mid-1970s and very early 1980s emerged the 200 series tractor, which included the MF 230, 235, 240, 245, 250, 255, 260, 265, 270, 275, 278, 280, 285, 290, 298, 299.
Inside mid-1980s, the temporary 600 show premiered. This included the 675, 690, 690T, 695, 698 and 699. The cause of bad deals figures had been considering unattractive styling and bad ergonomics, with the taxi sitting much higher than previous MF tractors. Even though cab did give exceptional visibility and a-flat floor, becoming higher from the crushed required it absolutely was most suitable to area operations rather than livestock jobs. The 600 series was among the first tractors to offer the user an option to indicate in which the hydraulic fluid is moved. By going a switch situated nearby the floor for the taxi, an individual could prevent off-flow to your back hydraulics and connect hands, concentrating the full power of this pump on front loader if equipped. In belated 1980s, one of the best marketing tractors of them all was launched- the 300 show Massey Ferguson. Excellent energy, ease of cab, large number of gears and elements made the MF 300 series successful particularly in European countries. The number included the MF 350, 362, 375, 390, 390T, 393, 394, 395, 398, and also the most effective and popular Massey Ferguson 399 with horsepower including 72HP to 104HP. The 300 show was also offered with a range of cab, Hi-Line or Lo-Line. The Hi-Line taxi showcased a-flat floor whilst the Lo-Line taxi have a hump in the middle the transmission tunnel. Some 'original' examples of the reduced horse power 300-series happen known to bring rates exceeding 20,000 due to their rareness.
When you look at the mid-1990s, the 6100 show and 8100 show had been introduced, including the 6150, 6180 and 8130.
Massey Ferguson MF 8290 tractor pulling a whole grain trailer
Tractors that emerged after the 300 show included the 4200 range, the 4300 range, 3600 (very early 1990s), 3000/3100 (early to mid-1990s), 3005/3105 (mid-1990s), 6100 (belated 1990s), 6200 (late 1990s/early 2000s (ten years)), 8200 (belated 1990s/early 2000s), 5400, 6400, 7400, 8400, 7600, (2012 to 2014) and 8600 (2009 to present)
Massey-Harris-Ferguson
In 1953, Massey-Harris joined aided by the Ferguson organization to become Massey-Harris-Ferguson, before eventually accepting its latest title in 1958.
Massey Ferguson
Title was reduced to Massey Ferguson in 1958. They tried to combine the 2 dealership companies and product lines. Their television and radio advertising showcased an upbeat jingle, with a male chorus singing, "he is a get-up-early, keep-'em-rollin', Massey-Ferguson sort of a guy." Nevertheless the team shortly began to decline financially. Facing increasing international competitors within the sixties the company begun to battle.
Sunshine, Australian Continent
In 1955, Massey purchased the Australian makers of sunlight harvesters, H.V. McKay Pty Limited. Hugh Victor McKay have conceived the stripper harvester in 1884, initial device to combine the features of reaping, threshing and winnowing grain from a standing crop. McKay later set up a manufacturing base at Ballarat, and then used in Braybrook Junction, where he took over the Braybrook apply Company work and rebranded it the sun's rays Harvester Works after the harvester's brand name. Residents of Braybrook Junction subsequently voted to alter the name of this suburb to sunlight after the harvester in 1907. Because of the 1920s the H.V. McKay Pty Limited ended up being working the largest implement factory inside southern hemisphere, covering 30.4 hectares (75 miles), and are trusted the intercontinental agricultural business through growth of society's earliest self-propelled harvester in 1924.
In 1930 the H.V. McKay Pty restricted had been awarded exclusive Australian circulation of Massey-Harris machinery. The business was then rebranded H.V. McKay Massey Harris Pty Ltd. Throughout World War II H.V. McKay Massey Harris shipped over 20,000 Sunshine exercises, disk harrows and binders to England to facilitate the increase in food production.
Into the 1950s the H.V. McKay was increasingly offered off to Massey Ferguson. Production concluded in 1970 while the last section marketed off and demolished in 1992. The previous volume shop, factory gates and clock tower, the pedestrian footbridge, factory home gardens, and hq hard are all noted on the Victorian history join.
Landini
In 1959, Massey purchased 100% of Landini, based in Italy. Landini has generated most brands for Massey through the years, especially vineyard and crawler brands. Massey offered 66% to ARGO SpA in 1989, some to Iseki down the road, while the final part is offered to ARGO in 2000.
Perkins
In 1959 Perkins motors of Peterborough, England, was bought, Perkins having been the key diesel motor supplier for Massey Ferguson for several years. In 1990, Massey Ferguson took more than Dorman Diesels of Stafford and merged they with Perkins to make Perkins Engines (Stafford) Ltd. In the 1980s, Perkins purchased Rolls Royce (Diesels) Ltd, to make Perkins machines (Shrewsbury) Ltd. Perkins ended up being sold down in 1998 by then holder LucasVarity to Caterpillar Inc., who have been a significant client with their small and mid-sized machines; Caterpillar was a major producer of huge diesel machines for static and cellular application.
Ebro of Spain
In 1966, Massey bought 32per cent associated with Spanish tractor and automobile organization Ebro, or engine Iberica. Ebro had earlier built Ford tractors under permit, nevertheless now began design designs for Massey, and Massey versions under permit. Massey offered their interest to Nissan in the 1980s.
In the early 1960s MF relocated their hq from 915 master Street toward sunshine lifestyle Tower at 200 college Avenue when you look at the downtown Toronto core.
In 1969, Massey Ferguson started creating a line of snowmobiles by the title 'Ski Whiz'. The snowmobile line was stopped in 1977, because a decline in marketing.
The Massey Ferguson 3000 show had been launched in 1986 as a brand new advanced level series, with electronic controls. This show replaced the Massey Ferguson 600 show in middle to highest hp markets. The range consisted of 5 designs when you look at the standard series and 3 sub-series and ranged from 63 hp to 175 hp. These new systems are integrated the French factory and were updated with newer cleaner machines in 199?. The series 3000, 3100 and 3600 show ended up being changed because of the MF 6100 series and MF 8100 show in 1995.
The Massey Ferguson 3500 series had been even more fundamental (without having almost all of the electronic devices of this other range) and created to exchange the Massey Ferguson 2000 series in the usa marketplace.
The lower driven Massey Ferguson 300 series built-in Coventry furthermore without large tec electronics had been added the UNITED KINGDOM and European countries and introduced in 1986, within the 47 hp to 100 hp range. 
A tractor try an engineering car created specifically to deliver a high tractive work (or torque) at slowly speeds, the functions of hauling a truck or equipment found in farming or building. Most often, the word is used to describe a farm automobile that delivers the energy and grip to mechanize farming jobs, especially (and originally) tillage, but nowadays a great variety of tasks. Agricultural implements are towed behind or mounted on the tractor, and also the tractor might supply a source of power in the event that implement try mechanised.
The word tractor ended up being obtained from Latin, becoming the broker noun of trahere "to pull". The initial recorded utilization of the keyword meaning "an engine or vehicle for pulling wagons or ploughs" took place 1901, displacing the earlier term "traction-engine" (1859).
Tractors may be generally speaking categorized by wide range of axles or wheels, with biggest types of two-wheel tractors (single-axle tractors) and four-wheel tractors (two-axle tractors); additional axles are feasible but uncommon. Among four-wheel tractors (two-axle tractors), nearly all are two-wheel drive (usually on backside); however, many are two-wheel drive with front wheel aid, four-wheel drive (usually with articulated steering), or track tractors (with steel or rubberized paths).
The classic farm tractor is a simple available vehicle, with two very large operating tires on an axle below and slightly behind a single chair (the chair and controls consequently have been in the guts), and the motor as you're watching motorist, with two steerable tires underneath the system compartment. This standard build features stayed unchanged for a number of ages, but enclosed cabs become installed on the majority of modern-day models, for reasons of operator safety and convenience. In certain localities with hefty or damp grounds, particularly within the Central area of California, the "Caterpillar" or "crawler" form of tracked tractor shot to popularity into the 1930s, as a result of exceptional grip and flotation. We were holding typically maneuvered through the use of switching brake pedals and individual track clutches operated by levers rather than a steering wheel.
Volvo T25, 1956, gas tractor
A contemporary 4-wheel drive farm tractor
Four-wheel drive tractors begun to appear in the 1960s. Some four-wheel drive tractors have the standard "two large, two small" configuration typical of small tractors, while many posses four large, driven tires. The more expensive tractors are generally an articulated, center-hinged design steered by hydraulic cylinders that go the forward power product as the trailing unit is not steered separately.
In the early twenty-first century, articulated or nonarticulated, steerable multitrack tractors has mainly supplanted the Caterpillar type for farm utilize. Bigger kinds of contemporary farm tractors incorporate articulated four-wheel or eight-wheel drive units with a couple of power products which are hinged in the middle and steered by hydraulic clutches or pumps. A relatively recent development is the replacement of tires or metallic crawler-type tracks with flexible, steel-reinforced rubber songs, usually run on hydrostatic or completely hydraulic driving systems. The configuration of those tractors holds little resemblance towards classic farm tractor design.
More elderly farm tractors use a handbook transmission with several gear ratios, usually three to six, occasionally multiplied into two or three ranges. This arrangement produces a set of discrete ratios that, combined with the varying for the throttle, allow final-drive rates from less than one-up to about 25 miles per hour (40 km/h), with the reduced rates used for working the land therefore the finest rate applied to the trail.
Slow, controllable rates are necessary for many of this operations done with a tractor. They assist supply the farmer a bigger level of controls in certain circumstances, like field-work. However, when going on general public roads, the slow working rates could cause trouble, like lengthy queues or tailbacks, that could postpone or annoy motorists in vehicles. These motorists are responsible for being duly careful around farm tractors and sharing the trail together with them, but some shirk this duty, so various ways to reduce the connection or minmise the speeds differential are used in which possible. Some nations (including the Netherlands) employ a road sign on some roads this means "no farm tractors". Some modern tractors, for instance the JCB Fastrac, are actually with the capacity of higher road rates of approximately 50 miles per hour (80 km/h).
An adult model European farm tractor, of kind still typical in Eastern European countries
Old tractors normally have unsynchronized transmission designs, which regularly require the operator stop the tractor to move between gears. This mode useful is inherently unsuited for some regarding the jobs tractors manage, and it has already been circumvented in a variety of ways over the years. For present unsynchronized tractors, the techniques of circumvention are dual clutching or power-shifting, both of which require the operator to depend on ability to speed-match the gears while moving, and tend to be undesirable from a risk-mitigation standpoint due to exactly what can make a mistake if the operator tends to make a mistake -- transmission harm can be done, and loss in automobile controls can happen if the tractor is pulling much load either uphill or downhill -- something which tractors usually do. Consequently, operator's guides for many of those tractors state one must always end the tractor before moving, and they do not even mention the options. As currently stated, that mode of good use is naturally unsuited for some of this jobs tractors manage, therefore better choices were pursued for more recent tractor design.
Cutaway of contemporary tractor
During these, unsynchronized transmission styles were changed with synchronization or with continually variable transmissions (CVTs). Either a synchronized manual transmission with enough available gear ratios (often obtained with double range, highest and reasonable) or a CVT let the engine rate is paired into desired final-drive rate, while keeping motor speed within the appropriate speed (as sized in rotations each and every minute or rpm) range for power generation (the performing number) (whereas throttling back into attain the desired final-drive speed are a trade-off that leaves the doing work number). The problems, solutions, and advancements described here furthermore describe the history of transmission evolution in semi-trailer vehicles. The greatest huge difference was fleet turnover; whereas all of the old road tractors have traditionally since been scrapped, many of the old farm tractors remain used. Therefore, older transmission design and procedure is primarily simply of historical curiosity about transportation, whereas in farming they still often affects daily life.
Pedals
Latest farm tractors often have four to five foot-pedals when it comes to operator on the ground associated with tractor.
The pedal from the remaining is the clutch. The operator presses with this pedal to disengage the transmission for either shifting gears or stopping the tractor. Some latest tractors have actually (or as recommended gear) a button regarding equipment stick for managing the clutch, as well as the standard pedal.
Two of this pedals from the appropriate are the brake system. The remaining braking system pedal stops the remaining rear wheel and the correct braking system pedal does the same using right side. This independent remaining and correct wheel-braking augments the steering of tractor whenever just the two back wheels are driven. Normally, this is done if it is required to making a sharp turn. The separate braking system pedal can also be utilized in mud or smooth earth to control a tire spinning due to reduced grip. The operator presses both pedals together to prevent the tractor. Often a swinging or sliding bolt are provided to lock both together when ideal.
The pedal furthest to the right may be the base throttle. Unlike in automobiles, it's also managed from a hand-operated lever ("hand throttle"). This helps offer a continuing speed in field-work. It also helps incorporate continuous energy for stationary tractors being operating an implement by shaft or belt. The foot throttle provides the operator considerably automobile-like control over the speeds of tractor for roadway services. This is certainly an attribute of more recent tractors; old tractors frequently did not have it. Inside UK, leg pedal use to manage system rate while traveling traveling are required. Some tractors, particularly those designed for row-crop perform, need a 'de-accelerator' pedal, which works when you look at the reverse manner to an automobile throttle, because the pedal was pushed right down to slow the motor. This permits good control over the rate of tractor whenever maneuvering at the end of crop rows in industries- the operating speeds associated with the engine is scheduled using the give throttle, and also to slow the tractor to make, the operator merely has to push the pedal, and turn and discharge it when the change are complete, in the place of having to alter the environment for the give throttle two times throughout the maneuver.
a 5th pedal was usually included just while watching motorist's chair (often pushed utilizing the operator's heel) to operate the rear differential lock (diff-lock), which stops wheel slide. The differential ordinarily allows the exterior wheel to travel faster as compared to inside wheel during a turn. However, in low-traction circumstances on a soft surface, equivalent system could allow one wheel to slip, more lowering traction. The diff-lock overrides this, forcing both wheels to make within exact same speeds, reducing wheel slide and increasing grip. Attention should be taken fully to unlock the differential before turning, often by striking the pedal a second time, because the tractor with good traction cannot perform a turn utilizing the diff-lock involved. In modern tractors, this pedal try replaced with a power turn.
Levers and switches
Many features when controlled with levers are replaced with some style of electrical switch with all the rise of indirect computer controlling of features in contemporary tractors.
Before the start of the 1960s, tractors have one sign-up of gears, hence one gear stick, frequently with 3 to 5 forward gears and 1 reverse. Then, team gears are introduced, and another gear stick was included. Later on, control of the forward-reverse direction was moved to a special stick attached beside the controls, which allowed forward or reverse travel in virtually any equipment. Nowadays, with CVTs or other clutch-free gear sort, a lot fewer sticks control the transmission, and some were replaced with electrical switches or is completely computer-controlled.
The three-point hitch was influenced with a lever for adjusting the positioning, or just like the initial ones, simply the features for raising or reducing the hitch. With modern-day electrical techniques, it is changed with a potentiometer for the reduced certain position and a differnt one for upper bound, and a switch permitting automated modification of the hitch between these configurations.
The external hydraulics also initially had levers, however now are often changed with a few type of electrical turn; equivalent holds true when it comes to power take-off shaft.
 
 
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Below is a clear, practical workshop-style guide to the crankshaft and crankshaft replacement/overhaul on a Massey‑Ferguson MF 6100‑series tractor, written for a beginner mechanic. I include the theory, every relevant component you’ll touch, what can go wrong, the tools/consumables you’ll need, a safe step‑by‑step removal and reassembly workflow, inspection and measurement steps, and troubleshooting tips. Read and follow a factory shop manual for all torque values and model‑specific procedures — those numbers are essential and vary by engine variant.
Quick high‑level theory (why the repair is needed)
- What the crankshaft does: The crankshaft converts the pistons’ up‑and‑down (reciprocating) motion into rotational torque to drive the transmission and PTO. It is the “spine” of the bottom end of the engine.
- Why failures happen: Most crankshaft problems are secondary to bearing failure or lubrication problems. If mains or rod bearings wear/overheat, the shaft journals get scored, worn, or even cracked. That produces knocking, loss of oil pressure, metal debris in oil, vibration, and eventual catastrophic failure (seized engine or broken crank).
- When you repair/replace: You rebuild or replace the crank if journals are worn beyond spec, cracked, bent (runout), or if bearings have caused grooving/pitting that can’t be restored by bearing replacement alone. Often crankshaft work is done with a full bottom‑end rebuild (bearings, seals, pistons/rods).
Analogy: think of the crankshaft as the wheel hub of a bicycle wheel assembly. The bearings let the hub spin smoothly. If the bearings fail the hub gets worn, the wheel wobbles and eventually binds. The bearings are cheap relative to the hub — but if you let it run, the hub (crankshaft) can be ruined.
Major components you will handle (detailed)
- Crankshaft:
  - Main journals: cylindrical surfaces that ride in main bearings.
  - Rod journals (crankpins): offset journals that connect to connecting rod big ends.
  - Counterweights: counterbalance the rod/journal masses to reduce vibration.
  - Oil passages: drilled internal passages that feed lubricating oil from mains to rod journals.
  - Flange/flywheel mounting surface: rear mounting for flywheel/flexplate.
  - Front snout/timing gear surface: front of crank for timing gears, pulley, harmonic damper.
  - Keyways/threads for pulley and flywheel retention.
  - Thrust surfaces (if present) for axial control (endfloat).
- Main bearings:
  - Upper and lower shells (saddle and cap halves) seated in block and main caps.
  - Bearing material layers (steel backing + babbitt or tri‑metal lining).
  - Thrust bearing(s) or thrust washers: control axial movement.
- Connecting rods and rod bearings:
  - Rod big end bearing shells; connect rod clamps to crankpins.
- Main bearing caps and cap bolts/dowels:
  - Caps secure the crank in the block; dowel pins locate them precisely.
- Oil pump and pickup screen:
  - Supplies lubrication to crank mains/rods; clogged pickup/starved oil causes bearing failure.
- Oil seal(s) (front and rear main seals / crank seal):
  - Prevent oil leakage where crank exits block.
- Harmonic balancer (damper):
  - Damps torsional vibration; also often has front pulley attachment and keyway.
- Flywheel/flexplate and flywheel bolts:
  - Stores inertia and links engine output to clutch/transmission. Must be torqued correctly.
- Timing gear/chain/belt and tensioner:
  - Tie crank timing to camshaft(s). Removing timing components will be required to remove crank on many designs.
- Crank position sensor (reluctor) & ring (if present):
  - Electronic timing reference — must be reinstalled correctly.
Tools and consumables (minimum)
- Lift/engine hoist or crane and engine stand (crank is heavy).
- Workshop manual with torque & clearance specs.
- Metric socket/torque wrench (capable of required torque ranges).
- Impact or breaker bar for stubborn bolts.
- Micrometer (0.01 mm or 0.0001 in resolution) for journal measurement.
- Dial bore gauge / inside micrometer for main bore measurement.
- Plastigage for measuring bearing clearances (or use an outside mic and inside mic to calculate).
- Dial indicator for runout measurement (shaft runout).
- Engine stand, soft mallet, pry bars, scrapers, gasket remover.
- Bearing puller, hydraulic press (for installing/removing tight components).
- Clean rags, solvent, oil, assembly lube.
- New main and rod bearings, seals, gaskets, bolts (always replace single‑use stretch bolts).
- Plastics/labeling tape and marker to tag parts.
- Safety gear: gloves, eye protection, steel‑toe boots, shop manual.
Safety and preparation (don’t skip)
- Disconnect battery and fuel supply; relieve pressures (coolant and fuel).
- Support tractor and block securely if removing whole engine; use proper lifting points on tractor/engine.
- Drain oil and coolant, remove ducts so fluids don’t spill.
- Mark and label all electrical and hose connections; take photos while disassembling.
- Work on a clean bench/space to avoid contamination.
- Replace single‑use fasteners (main bolts that use stretch) and bearings — bearings should not be reused unless manufacturer allows.
Step‑by‑step overview: removing crankshaft (general workflow)
Note: this is a generalized sequence. The MF 6100 can have variants; follow the model shop manual for specific steps and torque values.
1) Preparation and external removal
- Remove hood/panels to access engine.
- Disconnect battery & electrical harnesses.
- Drain engine oil and coolant.
- Remove air cleaner and turbo/intercooler piping (if needed).
- Remove radiator and fan if they obstruct access.
- Remove exhaust manifold and intake manifold as required for access to timing housing.
- Remove accessory drive components from front of engine (alternator, A/C compressor, power steering pump), unbolt and swing aside or remove.
- Remove front timing cover and any belt/chain/timing components that are on the crank snout (mark timing marks).
- Remove harmonic balancer/damper and front pulley.
- Remove flywheel/flexplate bolts and flywheel (support transmission input or detach transmission if removing engine).
- Remove oil pan: unbolt and lower carefully. May need to support engine and remove crossmembers.
2) Expose bottom end
- Remove oil pump (mark orientation) and pickup tube.
- Remove main bearing cap bolts in the correct order (usually sequential from ends toward center or vice versa) as specified by manual; leave caps in numbered order.
- Remove rod caps or push rods/pistons aside if you’re removing crank with pistons installed — typically you remove connecting rods from crankpins by removing rod caps (tag rods to pistons and mark orientation).
- Once main caps and rod caps are removed, the crank can be lifted out (use an engine hoist or 2 people; it’s heavy and awkward). Some tractors require removing the block from the frame first.
3) Lifting and transporting crankshaft
- Lift with proper rigging under counterweights; avoid prying on journals.
- Place crank on an engine stand or across clean blocks for inspection.
Inspection and measurement (what to check)
- Visual inspection: check for scoring, discoloration, localized heating (blueing), pitting, cracks, or repair welds.
- Journal measurements:
  - Use a micrometer to measure each main and rod journal diameter at several axial positions to detect taper and out‑of‑round.
  - Compare to factory specs to determine if journals are within tolerance or need undersize regrinding.
- Runout (bend):
  - Mount crank on V‑blocks and use a dial indicator against a journal or snout to measure radial runout. Excess runout = bent crank (needs straightening or replacement).
- Oil passage inspection:
  - Check internal oil holes for blockage and clean thoroughly.
- Thread and flange condition:
  - Inspect flywheel mounting face, keyway, and threads for damage.
- Crack detection:
  - For suspected cracks, use magnaflux or dye penetrant testing (done professionally).
- Bearing surface condition:
  - If scores are only minor and within undersize grinding allowance, crank can be reground to next undersize and matched with undersize bearings.
- Bearing bores in block:
  - Check main bore alignment and diameter with a dial bore gauge. If bores are out of spec, block machining may be required.
Repair options and when to replace the crank
- Regrind to undersize and fit undersize bearings: acceptable if journals are salvageable and not cracked. Requires professional crank grinder.
- Polish journals: for light surface scoring that’s within tolerances; polish only if light damage.
- Replace crankshaft: required if cracked, bent beyond straightening limits, or over multiple undersizes.
- Always replace bearing shells, seals, and in most cases main cap bolts (if they’re stretch bolts).
Reassembly best practices (step‑by‑step)
1) Cleanliness
- Clean block, caps, crank, oil passages, and all parts using solvent. Any grit will ruin bearings quickly.
2) Pre‑assembly
- Install new seals and new bearings; ensure upper shells are seated in block and lower in caps properly oriented (oil hole alignment).
- Use assembly lube on bearing surfaces.
3) Install crankshaft
- Place crank into block carefully, making sure not to nick journals.
- Fit main caps in their correct orientation and order (caps are numbered; dowels locate them).
- Snug bolts by hand then torque in the correct sequence incrementally to the final torque (factory sequence). Replace bolts if manual specifies single‑use.
4) Check endplay (thrust)
- Use a dial indicator on the crank flange and move crank fore/aft to measure endfloat. Thrust washers must be installed/adjusted to correct spec.
5) Measure bearing clearances
- Use plastigage across each journal under the cap, torque caps to spec, remove cap and compare to plastigage width to verify clearance. If outside spec, regrind or change bearing size.
6) Rod bearing fit
- Reinstall rods and their caps with new bearings, torque bolts to spec. Check side clearance and bearing crush as required.
7) Torque and recheck
- Torque all main and rod bolts to specification in sequence. Recheck endplay and rotate crank by hand to feel for binding.
8) Reinstall oil pump and pickup, oil pan (with new gasket or RTV), front cover, timing components, damper, flywheel, and all accessories.
9) Final checks
- Prime oil system if possible (spin oil pump to build pressure before initial start).
- Refill oil and coolant, reattach battery.
Initial startup and break‑in checks
- Before start: rotate engine by hand two full revolutions to confirm no interference and free rotation.
- Start engine and watch oil pressure, listen for knocks/vibration. Keep RPM low until oil temp rises and pressure stabilizes.
- After first run, re‑torque flywheel/critical fasteners if manual requires after heat cycles.
- Change oil and filter after initial break‑in miles/hours to remove any break‑in metal particles.
Common things that go wrong (during/removal and after rebuild)
- Wrong torque sequence or values on main caps → distortion and premature bearing failure.
- Mixing up cap locations/orientations → misalignment and binding.
- Not replacing single‑use bolts → bolts can stretch and fail.
- Contamination during assembly (dirt, metal swarf) → instant premature wear.
- Incorrect bearing selection (wrong size or clearance) → low oil pressure or dump bearing failure.
- Incorrect thrust clearance → axial movement causing seal leakage or binding.
- Damaged oil pump or pickup → poor oil supply and repeat bearing damage.
- Improperly timed reassembly of timing components → valve/piston contact on startup (serious).
- Reusing worn seals/gaskets → leaks.
- Reusing old bearings or polishing damaged journals beyond spec → future failures.
- Improper handling causing physical damage to crank (dropping, prying on journals).
Troubleshooting symptoms and their likely causes
- Heavy knocking from bottom end: worn rod/main bearings, excessive clearance, broken rod bolts.
- Low oil pressure after rebuild: wrong bearing clearances (too big clearance), damaged oil pump pickup, clogged filter.
- Metal in oil filter: indicates bearing wear or machining debris; stop and investigate immediately.
- Excessive vibration: bent crank or unbalanced rotating assembly (missing balancer weights).
- Oil leakage from front or rear seal: incorrect seal fitment or excessive crank endplay.
When to call a professional
- Crank is bent or cracked (requires magnaflux testing, straightening, or replacement).
- Journals require regrinding — best left to a crankshaft grinder/machine shop.
- If main bores are out of align or block needs line boring or honing.
- If you’re not confident measuring clearances and performing plastigage/dial bore gauge checks.
Final checklist (before putting tractor back in service)
- All bolts torqued to spec; critical bolts replaced where required.
- Bearing clearances checked and are within factory limits.
- Endplay/thrust in spec.
- All oil galleries clear, oil pump installed correctly, pickup screen clean.
- New seals and gaskets installed.
- Timing marks aligned and timing belt/chain tensioned per manual.
- Engine runs up to normal temps with stable oil pressure; no abnormal noises.
- Recheck for leaks after the first few hours of operation and change oil/filter after break‑in interval.
Concise troubleshooting for faults after rebuild
- Low pressure immediately on start: stop engine — check oil pickup, priming, and clearances.
- Persistent knock: check bearing torque, clearance, and for metal debris in oil.
- Axial play or clutch misalignment: check thrust washers and flywheel runout.
Closing practical tips
- Organize and label caps, rods, bolts. Photograph each step if needed.
- Replace wear items: bearings, seals, gaskets, and oil filter.
- Use OEM parts or quality aftermarket parts specified for MF engines.
- Keep a clean workspace and don’t hurry critical measurements.
- Always follow the Massey‑Ferguson workshop manual for your exact MF 6100 engine variant for torque values, bearing part numbers, and clearance specs.
That is a comprehensive beginner‑level workshop guide to crankshaft removal, inspection, and reinstallation on a Massey‑Ferguson MF 6100‑series tractor. Follow the factory manual for all specifications, take safety precautions, and call a professional machine shop for grinding, straightening, or crack testing.
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