confession: I am a gearbox killer-help me to reform
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Diamond Hell
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- Posts: 961
- Joined: 09 Oct 2005, 17:27
- 80-90 Mem No: 830
Possibly as you are buying gearboxes that are a minimum of 16 years old they are worn out before they go into your van.
Maybe if you're just cleaning the plate (which will be oil impregnated) it's slipping and accelerating wear on the gearbox - it does sound as though the spiggot bearing should be the next port of call.....
Maybe if you're just cleaning the plate (which will be oil impregnated) it's slipping and accelerating wear on the gearbox - it does sound as though the spiggot bearing should be the next port of call.....
Diamond Hell
Still Syncro, just much fasterer
Still Syncro, just much fasterer
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Tex Ritter
- Registered user
- Posts: 436
- Joined: 10 Oct 2005, 09:14
- 80-90 Mem No: 1057
- Location: Northumberland.
Gearbox killer
What oil is on the plate, gear oil or engine oil?
Gear oil will let itself be known by its acrid smell.
Engine oil will smell...well like oil.
Trace the oil leak and take it from there.
While your on, check the flywheel is fully home and all bolts correctly tightened.
Tex R
Gear oil will let itself be known by its acrid smell.
Engine oil will smell...well like oil.
Trace the oil leak and take it from there.
While your on, check the flywheel is fully home and all bolts correctly tightened.
Tex R
If you never have a route planned ...how can you ever be lost?
Obviously not fixing the root problem... and all this 'cleaning the plate' - do you mean centre plate/ friction plate?
You cannot clean that, as said above, once oil impregnated, you're just cleaning the surface unless you soak it in something like hot Carbon Tet or MEK, pretty lethal to be around. Otherwise the minute it gets hot and pressure comes on, oil squeezes out again. And has this a new pressure plate (cllutch cover), or has this been severely overheated too?
Do both gbox seal and crank seal and spigot bearing, checking the spigot itself for surface finish and tolerance. Check rock of spigot shaft coming out of gearbox - it will move of course, but does it seem excessive?
If the flywheel boss that the seal runs against is heavily grooved, get it turned down or ground down to at least a smooth finish, though don't go too far. If the flywheel face is blued, cracked or wavy (a good engineers straight-edge will tell you, even a couple of thou), it will need grinding to some extent to true and de-glaze it (can't be turned accurately due to hardness), the cracks if small are Ok in themsleves, or get a good flywheel (check that seal boss though).
New centre-plate, assemble as:-
Clutch re-installing
might read this about looking after your gearbox:-
Reluctant gearchange
...and finally, ensure the clutch system is not holding the clutch open (hydraulic lock; seized operating arm pivot bushes!)
You cannot clean that, as said above, once oil impregnated, you're just cleaning the surface unless you soak it in something like hot Carbon Tet or MEK, pretty lethal to be around. Otherwise the minute it gets hot and pressure comes on, oil squeezes out again. And has this a new pressure plate (cllutch cover), or has this been severely overheated too?
Do both gbox seal and crank seal and spigot bearing, checking the spigot itself for surface finish and tolerance. Check rock of spigot shaft coming out of gearbox - it will move of course, but does it seem excessive?
If the flywheel boss that the seal runs against is heavily grooved, get it turned down or ground down to at least a smooth finish, though don't go too far. If the flywheel face is blued, cracked or wavy (a good engineers straight-edge will tell you, even a couple of thou), it will need grinding to some extent to true and de-glaze it (can't be turned accurately due to hardness), the cracks if small are Ok in themsleves, or get a good flywheel (check that seal boss though).
New centre-plate, assemble as:-
Clutch re-installing
might read this about looking after your gearbox:-
Reluctant gearchange
...and finally, ensure the clutch system is not holding the clutch open (hydraulic lock; seized operating arm pivot bushes!)
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Syncro Kastenwagen / 16" Kombi Camper
Syncronaut No. 1