Symptoms
The engine runs, but no gear will engage after the truck has sat for months, because the disc has rusted to the flywheel or pressure plate. Or the clutch slips or grabs suddenly.
The fix, step by step
- For a lightly stuck disc, put it in gear with the engine off, make sure the way ahead is clear, and start it on the starter.
- The truck lurches, and the disc often frees once you work the pedal.
- If that fails, the gearbox has to come out.
- Support the engine sump on a stand, wire the two driveshaft halves together (they are balanced as a pair), undo the shift-rod nuts (17 and 19 mm) and the six 13 mm driveshaft bolts, then strap the 39 kg gearbox to a cross-beam and slide it back.
- Use a proper alignment tool when fitting the disc, and torque the bolts to the 22–25 Nm the write-up calls for.
Tools & part numbers
- Clutch alignment tool
- 10, 13, 15, 17 and 19 mm sockets
- 6 mm Allen key
- torque wrench (20 Nm range)
- two jacks and stands
- ratchet strap.
Where to buy the parts
Clutch kit, 710/712 (SAV2727): pressure plate, disc, throwout and pilot bearings, clips, bolts, alignment toolSwiss Army Vehicles ↗Amazon ↗
Clutch alignment tool (SAV2725)Swiss Army Vehicles ↗Amazon ↗
Clutch slave cylinder repair kit (7103265200)Swiss Army Vehicles ↗Amazon ↗
Hunting a used or discontinued part? Search eBay Motors for Steyr-Puch Pinzgauer 710 / 712 parts →
Rated for a competent home mechanic with a decent tool kit. Confirm torque figures, fluids and procedures against the factory service manual for your VIN, support the truck on stands rather than a jack, and work at your own risk (disclaimer). Some parts links are affiliate links, which pay us a small commission at no cost to you.