The table below shows the range of old PRM gearboxes that are no longer in production. The table shows when the production of the gearbox ceased and the current equivalent gearbox mode.
Workshop ManualsWorkshop manuals are available for each gearbox as a PDF file. To download the manual, click on the model number.
|PRM Model number
(click for manual)
|Delta||February 1997||PRM 150D||15W40|
|80||September 2016||PRM 90D**||ATF Dextron II or III
|120||September 2016||PRM 125D**||ATF Dextron II or III
|100||August 1973||PRM 280D||15W40|
|101||August 1982||PRM 280D||15W40|
|140||December 1978||PRM 280D||15W40|
|160V||March 1990||PRM 280D**||15W40|
|160D||March 1997||PRM 280D**||15W40|
|260D||April 2016||PRM 280D**||15W40|
|175||August 1973||PRM 500D||15W40|
|250||March 1973||PRM 500D||15W40|
|265||January 1978||PRM 500D||15W40|
|301||April 1987||PRM 500D**||15W40|
|310||December 1984||PRM 500D**||15W40|
|302||February 1997||PRM 500D**||15W40|
|401M||March 1987||PRM 750D**||15W40|
|402D||April 1997||PRM 750D**||15W40|
|601S||February 1984||PRM 1000D**||15W40|
|601M||January 1988||PRM 1000D**||15W40|
|601D||February 1997||PRM 1000D**||15W40|
Items marked ** are a direct replacement for the old model with the same external dimensions.
OilA mechanical gearbox (PRM 60, 80, 90, 120 or 125) must use automatic transmission fluid (ATF) Dextron II or III
Hydraulic gearboxes, we recommend 15W40 mineral oil (not synthetic) for typical use. For extreme temperatures see owners handbook.
Always check the oil level with the dipstick screwed down.