Hello Everybody,
I just got my montero back from the shop after the engine rebuild and have been changing the fluids.
The rear locker motor would run forever so after looking through Service Manual, decided to find out what is wrong.
I diconeceted the air hose while turning on the rear locker (in parking) to see if it is producing any pressure, I do not have a gauge but by blocking the end of the hose with my thumb I feel a bit of a pressure which I assume would be around 5 or 4 psi as the service manual calls for.... next step I took out the locker switch from the rear differential to check for continuity, it seemed to have oil in it and did not have good continuity, cleaned it with carb cleaner and that seemed to help, but you had to pull really hard on the switch to achieve that. After that I installed it back, went for a drive and noticed a weird winning from the rear differential and difficulty in maneuverability , brought it back home, changed the fluid with new one (80w90), went out for a test drive, rear diff is still locked, tried driving in 4hlc and 4llc to see if that would release the lock but no help, AND 4H does not engage while gear selector in D. I do not have the owners manual to see what I can do? any advise on what I can do would be greatly appreciated.
(rear diff motor still runs forever)