I have a 1991 jeep wrangler yj i put a newnp231
New Axle grease on the sliding link gear? Change the gear oil in your front differential, and, make sure the vacuum line is the correct I.D. If it is too large (it doesn't take but 1mm or 2mm - 3/16" or 7/32"?) and the vacuum is just a little too weak. also, is the vacuum modulator on the axle NEW? If so, are all connections tight, as short of line as possible, and as few diverters as possible. This is an area where very few things can go wrong because there is nothing to it. Brand New Line and connectors "IF" you have changed ANY at all. any stight kinks or cracks in the line, anywhere, and that's enough to throw off any attempt to "Shift-On-The-Fly", right... Check the easiest, most unsuspecting areas... also, if you don't have 'Locking Hubs' or "Lock-Outs", get a set of WARN lock-outs on the front. They are fairly cheap, but Quality Manufactured. Not a lot of moving parts, easy to maintain (keep 'em well greased with bearing grease, esp. after a weekend of Dirt, Water, Rocks, or any 4X4ing...) and install-remove-reinstall. Do this maint. at least 4x's a yr. No Matter What- and take your time, do not over-tighten, either. tighten the allen-head screws like you do head gaskets or a tire. Trust me, a $75 pair of WARN's will last you for the life of the Jeep. Vacuum issue should be easier than the lock-outs, and they are easy. One more thing about the lock-outs, you have them on there to reduce wear on the front axle, axle u-joints, driveline and transfercase. I wish I had a Scrambler.... Don't you? Dumb question, 'aye?????
1/3/2010 8:34:40 AM •
1991 Jeep...
•
Answered
on Jan 03, 2010
•
219 views