any ideas , high range works but when going from 4 h to 4L it seems to not engage and seems to just catch a small amount and shutter but will not engage???? ANy advice helps!

had similar problem with mine after the install of 6.5 gears.

How many miles on this case since rebuild with gears?

there is an internal snap ring inside the front output housing and if it is left out, the gears will sort of mesh for the front output, but when the torque of the low range is applied, it pushes the front engagement teeth apart and causes the front output gear to "skip" over the engagement collar causing the shuttering you may have heard.

Nother idea... worn front output shaft?
http://www.lowrangeoffroad.com/samtcase.htm

Are the detent balls where they should be?
Is your shifter sheet worn? Personally I like the brass bushing replacement though is sometimes causes the case to have a stiff shift back from 4wd to 2wd

thanks for the ideas, front output shaft has been upgraded.

I'm having the same problem in my GRS II case. Only mine won't stay in 4-lo. I'm just using a bungee to keep it in gear for right now, till I get a chance to rebuild it and see whats going on.

did you guys put the gears in yourselves or did you get the case built at petroworks? Mines about 10 years old and no problems with it yet. Do you have the 2wd low option?

I'm having the same problem in my GRS II case. Only mine won't stay in 4-lo. I'm just using a bungee to keep it in gear for right now, till I get a chance to rebuild it and see whats going on.

The nipple on the end of your front output shaft might be broken off. I had the same problem and didn't want to drop my case before a run, a buddy gave me the tip so I pulled the front of the case off while still in the vehicle, and BINGO, the tip of the output shaft was broken off. This part of the shaft is common to break even with the HD shafts because that part is not beefed up on em. Took about an hour and a half tops to swap out. HTH

Kevin

might have to shim the output even with the one with the longer engagement area

Pull the case apart and examine where the collar goes back and forth to engage. Its possible to put the low range gear on backwards to the collar is on the wrong side of the gear with no chance of engaging. Pretty simple and easy fix but done when not paying enough attention. I did it the first time. If petroworks did that on accident big deal shit happens ask for a 20 gift card and call it a day.

did you guys put the gears in yourselves or did you get the case built at petroworks? Mines about 10 years old and no problems with it yet. Do you have the 2wd low option?

I put them in myself. It's been fine up till this last year, it's just started acting up. I am running the Evil Twins, so yea, 2WD option

The nipple on the end of your front output shaft might be broken off. I had the same problem and didn't want to drop my case before a run, a buddy gave me the tip so I pulled the front of the case off while still in the vehicle, and BINGO, the tip of the output shaft was broken off. This part of the shaft is common to break even with the HD shafts because that part is not beefed up on em. Took about an hour and a half tops to swap out. HTH

Kevin

I'll check this out, thanks.

Pull the case apart and examine where the collar goes back and forth to engage. Its possible to put the low range gear on backwards to the collar is on the wrong side of the gear with no chance of engaging. Pretty simple and easy fix but done when not paying enough attention. I did it the first time. If petroworks did that on accident big deal shit happens ask for a 20 gift card and call it a day.

I'm going to do a rebuild this winter, so we'll see what it is.

The nipple on the end of your front output shaft might be broken off. I had the same problem and didn't want to drop my case before a run, a buddy gave me the tip so I pulled the front of the case off while still in the vehicle, and BINGO, the tip of the output shaft was broken off. This part of the shaft is common to break even with the HD shafts because that part is not beefed up on em. Took about an hour and a half tops to swap out. HTH

Kevin
You playing with your nipple again :flipoff2::flipoff2: Yes this is common breaking the nipple off. I will tend to drop out of 4 lo. When this happened to me, Buy the end of the weekend I had no 4 lo or hi. Bungee cord or not. Easy fix, you can leave the case in the rig to fix.

One more detail, 4 hi works great but when trying to engage 4 low it just stays in neutral. ..It feels like if it could just go a hair further it would engage ..

Had the same problem with mine and it turned out to be a bent long arm tcase mount.

Pull the boot off and see if the tunnel is keeping you from pusing it in gear. I had the case push back against the tunnel once when my front end busted and I couldnt run high gears. Like Ian said, if the case got shoved it could have bent a mounting arm or it could be held in a position where you physically can't engage the stick.

so many things could be the issue here. the front out put shaft would only afect the 4x4 not the low range. but there are thing there that could be the issue. mine stays in 4 hi but kicks out in 4 low to give me 2 low. this case is 3 years old, built by brent from trail tough, heres what i found wrong in the case:
the front shaft was wobbling out of the shift collar, the dam needle bearing that sits in the front of the main shaft had come out. dam thing fell out on the floor! streached like mad and let every thing move around badly. then the front out put shaft had pushed away fromt the main shaft. thus requiring a shimm,, miron from Z.O.R. pointed me in this direction and it seams to have worked. only got one more trip in before i tosted the engine.

good luck

http://i568.photobucket.com/albums/ss123/dbarr50cal/downsized_1206092145.jpg

http://i568.photobucket.com/albums/ss123/dbarr50cal/downsized_1206092147a.jpg

http://i568.photobucket.com/albums/ss123/dbarr50cal/1206092147.jpg

How old was your case? Did you wheel the chit out of it?

That's pretty interesting indeed! Looks like they didn't get a full pen weld.

Yes I have! I think that my 110 hp GTI swift motor might have put to much load on the weld. The bad thing is I just re-welded it. lol. Till I can fork out the coin for a new set of gears. Anyone know the best site for 5 to 1 gears. Im running 31 in and will not go larger. So 5-1 i think would be best?

i still got this case runnin round here will take $400 for it you ship from 82072....