I just ordered a sye kit for my np231. In preparation of the install I read the transfer case section in my Haynes manual and it explains that the transmission and transfer case is to be removed as one unit. Is this true, do I have to remove the transmission or can I just remove the transfer case and take care of buisness? Or can I just disassemble the rear of the transfer case while it is still attached to the transmission on the jeep?
I've heard of others who have removed the tcase by itself. Never tried it myself, but would think it could be done if you drop the rear of the whole unit enough to reach all the nuts holding them together.
You can remove the transfer case without removing the transmission. I want to say there are 8 studs connecting the two. Also, you CAN install the SYE with the case in the jeep, but IMO it is much easier with it removed. It reall doesn't take that long to drop the case out.
[SIZE="2"]'87 YJ, 4.2L, MC2100, HEI, RE 4.5", 2" body lift, ford 8.8 locked, 36" Swampers, homemade discos, Superwinch x9[/SIZE]
remove the floor panel inside the jeep, the one around the gearstick.
makes it easy to get to the top bolts.....and no you dont need to remove the tranny!! done it the above way many times, never had any issues,....
1998 XJ on 37's.JK Rubi axles with chromo shafts and ctm's, 4:1 transfer case, etc etc etc.
2003 Range Rover HSE, 4.4 Quad Cam.
1998 Range Rover with a 6.0 LSx
1994 YJ, 4.3/700R4/OME SOA, etc
Western Star 4900EX 4 axle.
4.3/700r4/new frame buildup (YJ).... http://www.jeepforum.com/forum/f12/swap-offically-underway-324622/
yeah but no one has mentioned, be ready to catch it. haha jk. it will stay in place after you unbolt the studs (5 or 6 depending on year) then just slid it off the trans and you are golden... you can bench press right?
1993 YJ with a 4.0 & TF 999 & Np 231 (All to change soon!)
SOLD!!!87 Red YJ with 95 4.0 & NV 3550 & Dana 300 Flipped
3.5 BDS Lift
when we did mine, we just did the case and not the tranny. I would recommend some ratchet wrenches, you can't move around much in there. Also, if I were you, I would recommend rebuilding your np231 (new chain and stuff) at the same time. My case exploded in Jan. and mine hasn 't been running since. If I could bo back a few years, I would have done much more than just installing the sye in the 231 at that time, it may have prevented the explosion.
__________________ 2nd YJ
93 Wrangler - 8.8 LS rear - D30 Aussied - Yukon 4.88 R&P - TW driveshafts Front and Rear - AA SYE Kit - RE 4.5" ED Lift - M.O.R.E. Shackle Reversal - 35" Kuhmo MT - TJ Flares
so is it worth the hassle to remove the t-case, im getting ready to do an SYE in about a week, i heard that you don't need to drop it and my t-case only has 57K miles on it, actually the entire jeep does. So idk if my t-case really needs to have any replaced.
'90 I6 258 w/ Weber 32-36 Carb.
32" BF M/T's with cragar rims
5" BDS springs, MORE greasable shackles, XJ driveshaft, AA SYE kit, RE SS brake lines. Bilstein 5150's, 255/70 valving all around, 14" travel in front, 10" in rear.
JF MOTO>>>>"Ban a tard...save a life" <<<contributed by leftlanetruckin OMNIPOTENCE...gotta get me some of that
well like everyone said you dont need to remove the trans as well, however do this - either have a jackstand tall enought to support the rear of the trans OR use a ratchet strap around the frame and under the trans to support the back half - its a bad time to find out your motor mounts are shot to have the engine fall backwards - (yes it can happen) Also saw a post about ratchet wrenches - a definate must have since on 2 of those you can only turn them 1/8 of a turn each time - takes FOREVER!
"Negative....I am a meat popsicle"
I put my AA SYE kit in about 6 weeks ago. I didn't drop the TC at all. I did it all under the Jeep and found it to be very easy. I really didn't want to mess with unbolting the TC from the tranny.
I unbolted the tranny from the skid plate, jacked up the tranny a little bit and put a jackstand under it and then dropped the skid plate to give good access.
Actual work time was about 2 hours to install the SYE kit. Half of that was done on the bench cleaning all the parts once I had everything disassembled and doing some partial reassembly. I had to take the shaft to a machine shop to get the bearings pressed off the main shaft though.