200/400/25/45/ZR/ZS gear ratios
S6
First
Second
Third
Fourth
Fifth
Final Drive
600
S4
First
Second
Third
Fourth
Fifth
Final Drive
Last letter of gearbox code should be a U if intercooled = uprated spec.
If no U at the end then it is a non intercooled gearbox
Usual failure is differential bearings often caused by low oil level from leaking driveshaft seals
Differential bearings are 6208's with plastic cages. Replace the metal caged items, or uprated M208 bearings which have more balls in them
Comparison of Gear ratios - Standard wheels and tyres for each vehicle
General gearbox info
Re: General gearbox info
Nice info there, but do you have a list of all the bearings that are in the PG1 gearbox and their replacements?
Re: General gearbox info
For an intercooled diesel box you'll need
Input shaft
3/MJ28
3/LJ28
Main shaft
3LRJA25(roller)
43/LJ25(ball)
RJ2024(35mm shaft)
Differential
6208s or for higher loads M208s
Non intercooled boxes I'm not 100% sure on.
Input shaft
3/MJ28
3/LJ28
Main shaft
3LRJA25(roller)
43/LJ25(ball)
RJ2024(35mm shaft)
Differential
6208s or for higher loads M208s
Non intercooled boxes I'm not 100% sure on.
Re: General gearbox info
Thanks Dan, thats really helpfull!