QuestionI have a 1986 Jeep Cherokee 4x4 with a 2.5 cyl, 5 speed/NP 207 Transfer with 190,000 miles. When you pull out in any gear there is a noise from the trans/xfer area. It happens in 2 wheel, 4 wheel high. NOT in 4 wheel low or with the xfer in Nuetral and the trans in first. I gave the vehicle to my son and he is in PA and I am in MO trying to help him. I was initially leaning towards the release bearing But now I dont know. Any thoughts?
AnswerRay,
Without, actually listening to the noise, or driving the Jeep, it's hard to guess what the problem is. I would suspect a bent or worn shift fork, which could cause the high range gears to not mesh properly, or a broken synchronizer stop ring. These are just a couple of items that could cause this problem, as this case has numerous thrust bearings, washers, etc, that could show a lot of wear with this many miles.
The first thing I would do, would be to change the oil in the transfer case, and look for broken parts, metal filings, or debris in the old oil. This could give you a clue to a broken component.
Then, if you are sure that it is a xfer case problem, I would consider pulling it out, and take it in to a reputable transmission shop to have it rebuilt, unless you feel confident rebuilding it yourself. Another option is to find a wrecking yard, and purchase a used transfer case.
Chilton prints a fairly good manual for your Jeep, and is a great troubleshooting, and repair guide. It shows a complete exploded view of the NP207 transfer case, along with disassembly, and assembly instructions. The book sell for, around $20, and is available at most auto parts stores.
Carl
