datsun mechanic Posted April 5, 2011 Report Share Posted April 5, 2011 just bought early 86 720 4x4, 5spd, kingcab,automatic frt hubs, 24Ltr, NO LIM SLIP. Why or is it normal when in neutral and if i spin two rear wheels at same time the frt axles will start to turn as soon as auto hubs engage? I'm new to 4x4's Quote Link to comment
datzenmike Posted April 5, 2011 Report Share Posted April 5, 2011 Going to have to run that by again. If in neuteral how are you spinniong the rear wheels?. Why wouldn't the front hubs turn then the auto hubs are engaged? Quote Link to comment
datsun mechanic Posted April 5, 2011 Author Report Share Posted April 5, 2011 Going to have to run that by again. If in neuteral how are you spinniong the rear wheels?. Why wouldn't the front hubs turn then the auto hubs are engaged? Quote Link to comment
datsun mechanic Posted April 5, 2011 Author Report Share Posted April 5, 2011 ok, first off 4wd's i am not equated with, but being curious i noticed when i put 720 on my lift, put trans and transfer case in neutral, then spinning one wheel to ck to see if it had lim slip (none) and then i turned both rear wheels in same dirention and saw both drive shafts turn, i would think that since transfer case was in neutral that the frt driveshaft would not move. My question is this normal or is their something wrong with transfer case. Quote Link to comment
DanielC Posted April 5, 2011 Report Share Posted April 5, 2011 I an no expert in 4 wheel drive. But I would assume it is normal for both front and rear driveshafts to turn. It would be either "solid", or some form of a limited slip. If you need to, you can unlock the front hubs. If there was a freewheeling differential in the transfer case, the power would just go to the one wheel slipping. Quote Link to comment
datsunaholic Posted April 5, 2011 Report Share Posted April 5, 2011 Usually Neutral unlocks both front and rear driveshafts from the input, and they should be unlocked from each other too. But I don't know Nissan T-cases. I have a Dana-20 in mine. What happens if you spin just the driveshaft? Don't worry about the wheels. Both shafts turn? Try holding one of the driveshafts while turning the other by hand. If it forces the one being held to turn, it's not in neutral. If it has a little "force" but can be stopped while the other is being turned, then it's in neutral but you have a little friction inside making it try to turn. Quote Link to comment
datsun mechanic Posted April 5, 2011 Author Report Share Posted April 5, 2011 Usually Neutral unlocks both front and rear driveshafts from the input, and they should be unlocked from each other too. But I don't know Nissan T-cases. I have a Dana-20 in mine. What happens if you spin just the driveshaft? Don't worry about the wheels. Both shafts turn? Try holding one of the driveshafts while turning the other by hand. If it forces the one being held to turn, it's not in neutral. If it has a little "force" but can be stopped while the other is being turned, then it's in neutral but you have a little friction inside making it try to turn. Quote Link to comment
datsun mechanic Posted April 5, 2011 Author Report Share Posted April 5, 2011 i held frt driveshaft firm, and unfortunately it turns when turning r/driveshft, still in neutral. Nissan T100L case ser #582219. Do you think now i should use google and call a "transfer case" rebuilders for info ??? then i repair Quote Link to comment
datsunaholic Posted April 5, 2011 Report Share Posted April 5, 2011 Well, I'd say something's wrong, but then again I'm not sure with the Nissan T-case. What happens when you put the transmission in gear at that point? That would tell if at least the input shaft is disengaging, which would indicate that the lever itself is reading correctly. And then try it in 2H and see if the shafts disengage from each other. Oh! And I did forget one thing- this isn't one of those weird transfer cases that require backing up 10-20 feet to disengage, is it? Or was that the hubs? I don't have any Nissan 4X4 stuff, my truck has Jeep stuff (Dana-20 T-case, Dana-30 front diff with WARN hubs) which don't take any weird procedures. Quote Link to comment
izzo Posted April 5, 2011 Report Share Posted April 5, 2011 10-20 feet lol... Some are the automatic hubs, and does require going forward/backwards to engage/disengage. But mine have always kicked in within a foot or two, and when i was stuck it just kicked in due to the drive shaft spinning. I know the automatic hubs i had on my ford required going back and forth or some crap, about 10 ft. Quote Link to comment
datsun mechanic Posted April 6, 2011 Author Report Share Posted April 6, 2011 10-20 feet lol... Some are the automatic hubs, and does require going forward/backwards to engage/disengage. But mine have always kicked in within a foot or two, and when i was stuck it just kicked in due to the drive shaft spinning. I know the automatic hubs i had on my ford required going back and forth or some crap, about 10 ft. THIS will bring the puzzel to an end: first off I was told their seemed to be a problem with no power and 4w drive problems, as it turns out there is not a problem with transfer case, i went to a local salvage yard and he had just pulled a T100L, the only time the front yoke will not move is naturally when transfer case is positioned in "2H" !!!! of course ! easy to under stand when its in front of me. Thats for getting me thinking more. Quote Link to comment
izzo Posted April 6, 2011 Report Share Posted April 6, 2011 I actually just read the 4wd operation instructions on my sun visor in my 4x4 on lunch break. it says to disengage 4x4, put into 2H, and go in the opposite direction you were using 4x4 for about 3.3 feet. Quote Link to comment
Skib Posted April 7, 2011 Report Share Posted April 7, 2011 moved to "720" sub forum the "how to" section is for how to write ups only... Quote Link to comment
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