tightgtp
Well-Known Member
- Joined
- Nov 8, 2009
- Messages
- 94
- Location
- illinois
- Occupation
- lead service technician for the largest forklift c
:Bangheadi have a case 621b with no 1st and 2nd gear in forward and reverse. i have 3rd and 4th gear. i check power to my 5 solenid valves on the trans valve. in forward i lose M3, in reverse i lose M1. i also tried a good used for/rev. lever assy. and got the same result. i have talked to 2 local dealers. they have been very helpful. both think probably the ZF trans control module is the problem. but i want to make sure before i buy a $3000 module that isn't returnable. i have talked to ZF transmissions, they thought a problem with the declutch system, i tested and didn't find anything out of the norm. does anyone know if the declutch works on all gears? any info on any of my problems are greatly appreciated.:Banghead