Datsun (nissan) I have an older Datsun or Nissan forklift here I have a transmission problem with this truck. I have forward travel but no reverse travel.

My pressures are as follows. Forward 90lbs at Idle 120lbs at 1/2 throttle Reverse I have 25lbs at Idle and 60lbs at 1/2 throttle.

There are 2 other test ports on this transmission labeled M & C
not sure what these are for.

I have removed the cover and checked the spool and it appears to be OK Not broken anyways.

I suspect clutch packs But would like to be more sure. Does anyone have troubleshooting Knowledge on this type of unit?

This is a powershift 1 speed transmission I think.