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rob45x
Joined: Mon Jun 04, 2012 10:09 pm Posts: 813 Location: Sydney
Vehicle: 92 sierra tintop, 88 WT sj50
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 Posted: Mon Nov 05, 2012 6:57 pm |
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Hey guys. The first time ive checked my sierra into 4H today and locked the front hubs in. But when i make a turn the wheels start locking up and gets tight/jammed. Now i know what lockers are etc and how diffs work but im unfamiliar with 4wd mode as ive never used it.
Any help or ideas/ is this normal when in 4wd mode?
cheers in advance!
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reeceh

az supporter
Joined: Thu Apr 29, 2010 8:45 am Posts: 1230 Location: Brisbane
Vehicle: 91 sierra, g16b,lift,30's
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 Posted: Mon Nov 05, 2012 6:59 pm |
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Are you fully engaging the hubs?
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SierraDan

az supporter
Joined: Fri Feb 04, 2011 10:55 pm Posts: 9347 Location: Newcastle
Vehicle: G13BB Jimny
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 Posted: Mon Nov 05, 2012 6:59 pm |
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on tar?
_________________ mlm
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rob45x
Joined: Mon Jun 04, 2012 10:09 pm Posts: 813 Location: Sydney
Vehicle: 92 sierra tintop, 88 WT sj50
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 Posted: Mon Nov 05, 2012 7:01 pm |
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yes the hubs are fully engaging and yes on tar
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atari4x4

az supporter
Joined: Mon Dec 11, 2006 10:30 pm Posts: 34843 Location: East Radelayed
Vehicle: SV420+SV620 Vitara's
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 Posted: Mon Nov 05, 2012 7:06 pm |
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not a good idea using 4wd on high traction surfaces
_________________ You're just hating because you don't understand
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rob45x
Joined: Mon Jun 04, 2012 10:09 pm Posts: 813 Location: Sydney
Vehicle: 92 sierra tintop, 88 WT sj50
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 Posted: Mon Nov 05, 2012 7:08 pm |
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ok. so i stuffed up lol. wont happen again
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JrZook
Joined: Tue Aug 08, 2006 11:30 pm Posts: 5517 Location: Holland Park
Vehicle: Awesome!!
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 Posted: Mon Nov 05, 2012 7:09 pm |
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ON tar ouch!!! What you are experiencing is wind-up. Not good for any of the drive train! 4x4 is only to be used on low traction surfaces where the tires will slip, not tar!
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rob45x
Joined: Mon Jun 04, 2012 10:09 pm Posts: 813 Location: Sydney
Vehicle: 92 sierra tintop, 88 WT sj50
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 Posted: Mon Nov 05, 2012 7:13 pm |
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geez lucky i didnt break anything. Its just that i have a slight growling noise coming from underneath backing off and on accelerator and thought it might be the rear diff. So i disconnected the rear tail shaft and drove it home on the front diff in 4wd mode. But massive vibration when i done that. so pulled over and slipped the rear shaft back on. No vibration in 4wd.
really lucky i didnt stuff anything
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Zook_Fan

az supporter
Joined: Thu Mar 13, 2008 10:30 pm Posts: 4530 Location: Toowoomba
Vehicle: Maruti and LJ80's
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 Posted: Mon Nov 05, 2012 8:42 pm |
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You shouldn't have any vibrations running with the rear shaft out and in 4H. It sounds like you have other problems as well
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rob45x
Joined: Mon Jun 04, 2012 10:09 pm Posts: 813 Location: Sydney
Vehicle: 92 sierra tintop, 88 WT sj50
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 Posted: Mon Nov 05, 2012 8:48 pm |
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yeah it was weird. didnt think it should make a difference if i have the rear shaft in or out in 4wd.
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atari4x4

az supporter
Joined: Mon Dec 11, 2006 10:30 pm Posts: 34843 Location: East Radelayed
Vehicle: SV420+SV620 Vitara's
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 Posted: Mon Nov 05, 2012 9:11 pm |
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jack shaft uni's
_________________ You're just hating because you don't understand
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rob45x
Joined: Mon Jun 04, 2012 10:09 pm Posts: 813 Location: Sydney
Vehicle: 92 sierra tintop, 88 WT sj50
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 Posted: Mon Nov 05, 2012 9:17 pm |
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but the jack shaft is always spinning whether the front or rear shaft is in
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JrZook
Joined: Tue Aug 08, 2006 11:30 pm Posts: 5517 Location: Holland Park
Vehicle: Awesome!!
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 Posted: Mon Nov 05, 2012 10:53 pm |
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Front shaft unis. Probs haven't been used for a while and are stiff/semi seized
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Zook_Fan

az supporter
Joined: Thu Mar 13, 2008 10:30 pm Posts: 4530 Location: Toowoomba
Vehicle: Maruti and LJ80's
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 Posted: Mon Nov 05, 2012 10:54 pm |
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Did you disengage the hubs when you put the rear shaft back in?
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rob45x
Joined: Mon Jun 04, 2012 10:09 pm Posts: 813 Location: Sydney
Vehicle: 92 sierra tintop, 88 WT sj50
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 Posted: Tue Nov 06, 2012 5:14 am |
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At first I left them engaged. And drove it in 4wd with no vibration
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