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Massey Ferguson MF35 tractor factory workshop and repair manual download

Ordered, theory‑driven procedure to repair the MF35 suspension (front and rear). Each step gives what to do and why the repair corrects the fault. Follow safety basics (chock wheels, use axle stands; don’t rely on a jack alone).

1) Diagnose and document symptoms
- What to check: steering play/wander, knocking over bumps, uneven tyre wear, sagging rear, clunks on braking, oil leaks at hubs.
- Theory: these symptoms point to specific worn parts — loose steering/kingpin wear causes play and wander; worn wheel bearings cause vibration/noise; broken or sagged leaves cause lowered ride height and loss of load carry; worn shackles/bushes cause clunks and loss of spring alignment.

2) Prepare and lift tractor
- Procedure: block opposite wheels, raise on properly placed jacks, support on stands under axle/housing.
- Theory: stable, supported chassis is required to safely remove wheels/hubs and load/unload suspension without letting alignment change unexpectedly.

3) Front wheel bearings and hubs
- Remove wheel and hub/drum, inspect bearings, races, seals.
- Repair: replace worn bearings and seals; clean and inspect hub bore and spindle; repack with grease or refill hub oil if hub is oil-lubed.
- Theory: bearings hold the wheel true on the spindle. Worn bearings allow radial/runout and axial play which produces vibration, noise and uneven tyre wear. Replacing bearings restores correct preload and concentricity, eliminating those symptoms. New seals stop contamination that accelerates wear.

4) Kingpins / stub axle bushes (front axle pivot)
- Inspect kingpins, upper/lower bushings (or bronze bushes), and thrust surfaces for ovality, wear or scoring. Remove old bushings and fit new ones (or ream/line‑bore to oversize and fit new bushings), fit new kingpins as required.
- Repair: press in new bushes or replace worn kingpins; fit with correct clearance/lubrication.
- Theory: the MF35 front stub axles pivot on kingpins/bushes. Wear here creates steering play and misalignment. Replacing/renewing restores correct pivot geometry, removes play and restores steering centering and predictable toe-in under load.

5) Front axle pivot/center bushes and retaining hardware
- Inspect the centre pivot pin/bush assembly that connects the axle to the frame (if fitted); replace worn bushings and worn pins; renew any locking/retaining plates and torque hardware.
- Theory: worn pivot allows the entire axle to shift relative to the frame, causing steering wander, uneven tyre contact and accelerated wear. New bushes return the axle to correct location and restore suspension geometry.

6) Steering linkage and drag link/tie‑rod ends
- Inspect ball joints, tie‑rod ends, drag link, steering box output for play. Replace worn rod ends, grease fittings and tighten/adjust to correct toe.
- Theory: worn linkage introduces free play between steering wheel and wheels. Replacing restores tight mechanical linkage so inputs produce the intended wheel movement; adjusting toe restores tyre contact and reduces wear.

7) Rear springs and shackles (semi‑elliptic leaf springs)
- Inspect leaf springs for cracked or broken leaves, sagging pack, missing clips, corroded spring eye bushings. If individual leaves broken or pack has lost arch, either replace the broken leaf(s) and renew clips or replace the full spring pack. Replace worn/shrouded spring eye bushings and shackle pins.
- Theory: leaf springs support load and set ride height. Broken or fatigued leaves reduce spring arch, causing sag, poor load support and harsher ride. Replacing the pack or leaves restores correct spring rate, ride height and load distribution. New bushings remove lateral freedom that causes noises and misalignment.

8) U‑bolts, axle seat and spring pads
- Remove and replace corroded or stretched U‑bolts and inspect spring seat surfaces and axle pad. Clean mating faces, replace U‑bolts/nuts and torque to spec.
- Theory: loose or damaged U‑bolts let the axle shift under load, changing the spring pre‑load and alignment. New, correctly torqued U‑bolts secure the axle to the spring pack and restore the designed spring/axle relationship.

9) Shock/damping (if present) and bump stops
- Inspect any dampers (some tractors have none) and rubber bump stops or limiting straps. Replace worn dampers or bump rubbers.
- Theory: damping controls rebound and prevents harsh oscillation. Replacing worn items reduces bounce and improves wheel contact with the ground.

10) Lubrication, seals and bearings reassembly
- Grease all kingpins, bushings, tie‑rods and zerks; refill hub oil or repack bearings; fit new seals.
- Theory: correct lubrication reduces friction and wear, preventing recurrence of play and overheating which shortens part life.

11) Alignment and preload adjustment
- Set steering toe and centering per MF guidance (or align until steering is centered at straight ahead). Set wheel bearing preload or adjust nut to remove play while allowing free rotation.
- Theory: correct toe and preload ensure tyres contact evenly, steering is predictable, and bearings have correct load to avoid overheating or slop.

12) Torque, test and recheck
- Torque all fasteners to manufacturer specs (replace any stretch bolts). Lower, road‑test under load and at typical working speeds. Recheck for noises, play, correct ride height and retorque after initial hours of use.
- Theory: proper torque keeps components clamped at designed loads so they function as intended. Test confirms that geometry and load paths are restored; rechecking ensures nothing worked loose as parts seat.

How each typical repair fixes the fault (quick mapping)
- Replacing wheel bearings/seals → removes vibration/noise, stops heat and oil leakage, restores wheel concentricity.
- Renewing kingpins/bushings → removes steering play, stops wandering, restores centering and even tyre wear.
- Replacing tie‑rod ends/drag link joints → removes free play between wheel and steering wheel; restores accurate steering response.
- Replacing broken leaves or full spring pack → restores ride height and spring rate, removes sag and reduces shock loads transmitted to chassis.
- Replacing shackles/bushings and U‑bolts → removes clunks, secures axle to springs and maintains alignment under load.
- Lubrication/seal renewal → extends life of new parts by preventing abrasive contamination and ensuring proper lubrication.

Final checklist before returning to service
- Wheels torqued, bearing preload correct, seals fitted.
- Steering centered and toe set.
- Spring arch and ride height correct, U‑bolts torqued.
- All greasers greased, no fluid leaks.
- Road test and recheck all fasteners after a short trial.

That is the repair sequence with the mechanical reasons why each action corrects the symptoms.
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