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Massey Ferguson MF3600 series tractor factory workshop and repair manual download

Tools & consumables needed
- Basic hand tools: metric socket/ratchet set, combination wrenches, breaker bar, screwdrivers, pliers.
- Torque wrench (appropriate range for pulley/water‑pump bolts).
- 3‑ or 4‑jaw gear/pulley puller (center screw long enough to bear on pump shaft end).
- Pulley installer/press tool or arbor press; if unavailable, a heavy threaded rod/large washers/ nuts can be used as an installer.
- Penetrating oil (e.g., PB Blaster).
- Soft‑faced hammer and hardwood block.
- Heat source (propane torch) — optional and used carefully to expand pulley only.
- Drain pan, rags, gloves, safety glasses.
- Jack and axle stands or front support (if needed to access pulley).
- Replacement parts: water pump pulley (correct MF3600 part), key (woodruff key if used), water‑pump shaft seal (if disturbed), fan belt(s) if worn, and any bolts/nuts shown damaged. Service manual for torque values.

Safety precautions (non‑negotiable)
- Work with engine cool. Hot coolant/parts will burn.
- Disconnect negative battery terminal to avoid accidental starts.
- Support tractor securely with jack stands if you need to raise front — never rely on a jack alone.
- Wear eye protection and gloves. Keep clothing and hands clear of belts/fans.
- Capture coolant if you must open coolant housing. Dispose properly.
- If using heat, avoid open flame near fuel, hoses, or rubber components.

Overview of the job
- You are removing and replacing (or reinstalling) the water‑pump pulley on an MF3600 series tractor. The pulley is typically pressed onto the pump shaft (often with a key). Do not hammer directly on the pump shaft or the pump housing; that can damage bearings or the seal. Use a proper puller for removal and a press/installer for reinstallation.

Step‑by‑step: removal
1. Preparation
- Park tractor on level ground, engine off, handbrake on. Block wheels.
- Disconnect negative battery cable.
- If necessary for access, raise the front end and secure on stands.
- Allow engine and cooling system to cool fully.

2. Remove belt(s) and fan assembly (as required)
- Loosen and remove the drive belt(s) from the water‑pump pulley. Note belt routing or take a photo.
- If the fan is mounted to the pulley or a fan hub, remove fan retaining nuts/bolts per the manual and carefully take the fan off. Keep bolts and note orientation.

3. Inspect and free pulley
- Clean around the pulley and pump shaft area. Spray penetrating oil where the pulley meets the shaft and let it soak 10–15 minutes.
- If the pulley has debris or exposed set screws/retaining devices, remove them now.

4. Fit the puller
- Fit a 3‑jaw or 4‑jaw puller so the jaws grab the pulley flange behind the lip (not on thin edges that will bend). Center the puller screw on the exposed end of the water‑pump shaft (or on a protective cap if present).
- If the puller screw would bear on the shaft threads or seal, use a small protective cap or wood spacer so the screw presses on the shaft shoulder only.

5. Remove pulley with the puller
- Tighten the puller center screw slowly and evenly. Apply steady pressure—do not jerk.
- If the pulley is stubborn, do not hammer the shaft. Instead:
- Apply more penetrating oil and wait.
- Heat the pulley jacket (not the pump housing) with a torch briefly to thermally expand the pulley. Heat only a few seconds and do not overheat. Protect seals and hoses from heat.
- Continue using the puller.
- Once the pulley breaks free, back the puller off and remove the pulley.

6. Inspect pump shaft and parts
- Check for scoring, rust, or damage on the shaft and keyway.
- If the shaft oil seal is exposed or we think it was compromised, plan to replace the seal.
- Replace the key (woodruff key) if damaged or worn.

Step‑by‑step: installation
1. Clean and prep
- Clean the shaft, inside of replacement pulley bore, and keyway. Lightly oil the key and shaft with a thin film of oil or anti‑seize per manual.
- Verify replacement pulley bore is correct and not mismatched.

2. Fit the key
- Install the woodruff or straight key into the shaft keyway. Ensure it sits flush and is properly seated.

3. Use an installer/press to fit the pulley
- Best practice: use an arbor press or the manufacturer’s installer tool. Align the pulley squarely on the shaft and press it on evenly until it seats against the pump shoulder.
- Alternative DIY installer: run a threaded rod through the pulley, place large washers and nuts on both sides so you can draw the pulley onto the shaft with even pressure. Use backing washers so force pushes the pulley onto the shaft shoulder—not onto the pump housing. Do not tighten against the pump’s bearing or seal.
- If using heat: warming the pulley slightly (not the pump) can make installation easier. Do not overheat.

4. Check seating and clearances
- Confirm the pulley is fully seated and the key is engaged. There should be no wobble.
- Replace any fan or spacers and torque bolts to the manufacturer’s specs (consult MF3600 service manual for exact torque values).
- Refit fan, belts, and any covers. Replace belts if cracked, glazed, or worn.

5. Final checks
- Reconnect battery.
- Start engine and observe pulley runout and belt alignment. Watch for leaks around the water pump seal.
- Recheck belt tension after a short run (new belt may stretch slightly).

How the main tools are used (concise)
- Pulley puller: Jaws hook behind the pulley flange. The center screw presses on the shaft shoulder; as you tighten, the jaws pull the pulley off the taper. Tighten slowly and evenly.
- Pulley installer/press/arbor press: Applies uniform axial force to push the pulley onto the shaft until it seats. If using a threaded‑rod installer, the rod replaces the press ram — nuts/washers draw the pulley on while a backup washer bears on the pump shoulder (or press on the shaft end) to avoid loading the pump bearings.
- Heat: Apply briefly and evenly to the pulley bore to slightly expand it; never heat the pump housing or seals.

Common pitfalls & how to avoid them
- Using hammer strikes on the pulley or pump shaft: this damages seals and bearings. Use a puller/press instead.
- Puller jaws grabbing thin edges and bending the pulley: hook behind a sturdy lip or use a backing plate.
- Center screw bearing on the seal or threads and damaging the shaft: use a protective cap or spacer so the screw bears only on the shaft shoulder.
- Reusing a damaged key, or not installing a key: will cause slippage and immediate failure.
- Not replacing the shaft seal if disturbed: you’ll risk coolant leakage.
- Overheating the pulley or nearby components with torch: protect hoses and rubber parts; short, controlled heat only.
- Improper torque on fan/pulley bolts: always use specified torque values from the MF3600 manual.
- Misaligned pulley or improper belt routing causing premature belt wear: check alignment and routing before running engine.

Replacement parts usually recommended
- Water‑pump pulley (OEM MF3600 part).
- Woodruff key or key stock (if used).
- Water‑pump shaft seal (if seal was exposed or old).
- Fan belt(s) (inspect and replace if worn).
- Bolts/nuts if corroded or stretched.
- Fan or fan hub parts if they show wear/damage.

Notes & final advice
- If you lack the installer/puller or the pulley is seized badly, a machine shop can press/pull the pulley for you and supply correct tools and torque values.
- For torque specs, seal sizes, and any model‑specific notes, consult the MF3600 series service manual or parts catalogue.

Done.
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