dpl096

I'm stumped and need some help please. 2001 Grand Cherokee Limited 4.0 4x4 178,000 miles. I just recently bought this as a fix and drive for work so I've never been in the tranny. Has been starting out in 2nd gear and then shifts fine up through OD. Code P1762 Governor Pressure Sensor Offset. No huge problem. Ordered the new needed parts and this morning dropped the pan and found to pieces of metal laying in the bottom that for all account look a lot like broken piston rings. All I've done is dropped the pan and removed the filter - nothing more. I am by no means a transmission mechanic beyond something simple like swapping out the filter and replacing a sensor and solenoid. I've no clue what these pieces of metal are. I do not see anything obviously broken. An suggestions ????? Thank you

dave1123

I firmly believe that's the O/D main spring retainer snap ring. There's a 800 lb spring in the O/D unit that will seriously injure you if it gets away when you disassemble the unit. There are 2 ways you can tell if it's broken. (1) If you have no compression braking when downshifting and (2) when you start to take out the mounting bolts, slowly all 6 together, the case separates like it's under pressure. You can safely remove the O/D unit by replacing the bolts (one at a time) with threaded rod and nuts, then slowly releasing the spring pressure. The O/D unit is removable and rebuildable without taking the whole transmission apart. The only thing that connects it to the transmission besides the mounting bolts is the park lock rod. You can buy the O/D unit already rebuilt separately. If you let it go long enough, that spring will eat away at the sprag gear unit in front of it. I'm not absolutely certain that's the snap ring, but it sure looks like it!

You'll have to remove the t/case first to make it easier to handle when taking it off the transmission.

dpl096

Dave....

Thank you very much for t he answer. You've given me a start in now researching this. I greatly appreciate the advice!