sheared pinion bolts 2 Xs - Pirate4x4.Com : 4x4 and Off-Road Forum

jpkelly3 · 10-13-2005, 08:07 AM

Gentlemen (and Ladies):
Mine is a 94 GraChee V-8 all wheel drive. @ 155k miles the front ring gear bolts began shearing off one by one over a 3 weeks period. Caught it before the last couple went. No damage to the gears. BTW gear oil @ proper level.
Replaced bearings, properly torqued the new Dealer bolts and went on. Approx one year later, the process began again. My friend @ dismantler yard says its common and they sell the crap out of the fronts @ $$$. Must be something other than the bolts. Its an everyday driver, around town. I love the truck, its paid for. Any thoughts?
Thanks in advance.

jk

muddawg95yj · 10-13-2005, 09:05 AM

you mean ring gear bolts?

jpkelly3 · 10-13-2005, 11:02 AM

Thank you sir You are correct!

nagal · 10-13-2005, 11:14 AM

Did you use thread locker on the bolts when you put the new ones on?

As far as I know, if they are torqued and you are using thread locker then might be the holes in the carrier are messed up somehow.

BTW, nothing Hardcore about this, move it to Jeep Newbie or Newbie General.

JEEPRZ · 10-13-2005, 11:49 AM

I have seen this once before, but it was in a rear 44. The carrier was machined wrong, and the ring gear was not sitting flush.

Usually its from used bolts, cheap bolts, and mostly installation error.

BTW, this is definatly something for one of the newbie forums

jeepn4life · 10-13-2005, 02:03 PM

Skunkworks fab built a rear 44 for a friend of mine and the ring gear bolts started coming out a few months or so after they built it. replaced the 2 bolts that came out, and it happend again a few hundred miles later, different bolts... Ruined the ring gear... Replaced the ring and pinion, and never had another problem again. Pretty sure it was installer error. Use red locktite

Mo · 10-14-2005, 08:46 AM

jpkelly3 · 10-14-2005, 09:52 AM

Yes Locktite was used and properly torqued.
Thanks

BlueAngel · 10-14-2005, 11:04 AM

When installing new ring gear bolts, red loctite them, and torque them in a star pattern, a little bit at a time.

10-13-2005, 08:07 AM	#1 (permalink)
jpkelly3 Registered User Join Date: Oct 2005 Member # 55475 Location: Delawhere Posts: 5	sheared pinion bolts 2 Xs Gentlemen (and Ladies): Mine is a 94 GraChee V-8 all wheel drive. @ 155k miles the front ring gear bolts began shearing off one by one over a 3 weeks period. Caught it before the last couple went. No damage to the gears. BTW gear oil @ proper level. Replaced bearings, properly torqued the new Dealer bolts and went on. Approx one year later, the process began again. My friend @ dismantler yard says its common and they sell the crap out of the fronts @ $$$. Must be something other than the bolts. Its an everyday driver, around town. I love the truck, its paid for. Any thoughts? Thanks in advance. jk Last edited by jpkelly3; 10-13-2005 at 11:01 AM.

10-13-2005, 11:02 AM	#3 (permalink)
jpkelly3 Registered User Join Date: Oct 2005 Member # 55475 Location: Delawhere Posts: 5	Correction Thank you sir You are correct!

10-13-2005, 11:14 AM	#4 (permalink)
nagal Registered User Join Date: Jun 2004 Member # 31852 Location: Yucca Valley Posts: 61	Did you use thread locker on the bolts when you put the new ones on? As far as I know, if they are torqued and you are using thread locker then might be the holes in the carrier are messed up somehow. BTW, nothing Hardcore about this, move it to Jeep Newbie or Newbie General. Last edited by nagal; 10-13-2005 at 11:15 AM.

10-13-2005, 11:49 AM	#5 (permalink)
JEEPRZ Registered User Join Date: May 2000 Member # 784 Location: Plano, TX Posts: 1,436	I have seen this once before, but it was in a rear 44. The carrier was machined wrong, and the ring gear was not sitting flush. Usually its from used bolts, cheap bolts, and mostly installation error. BTW, this is definatly something for one of the newbie forums __________________ Think for yourself

10-14-2005, 11:04 AM	#9 (permalink)
BlueAngel Bending light Join Date: Nov 2003 Member # 24300 Location: Ontario, CANADA Posts: 1,212	When installing new ring gear bolts, red loctite them, and torque them in a star pattern, a little bit at a time. __________________ Project - Destroyer

10-13-2005, 09:05 AM	#2 (permalink)
muddawg95yj Registered User Join Date: Sep 2004 Member # 35318 Location: Brandon, MS Posts: 1,141	you mean ring gear bolts?

10-13-2005, 02:03 PM	#6 (permalink)
jeepn4life Registered User Join Date: Jan 2005 Member # 42292 Posts: 701	Skunkworks fab built a rear 44 for a friend of mine and the ring gear bolts started coming out a few months or so after they built it. replaced the 2 bolts that came out, and it happend again a few hundred miles later, different bolts... Ruined the ring gear... Replaced the ring and pinion, and never had another problem again. Pretty sure it was installer error. Use red locktite

10-14-2005, 08:46 AM	#7 (permalink)
Mo Everyday is Tuesday. Join Date: Feb 2000 Member # 47 Location: Lizzy, CO Posts: 15,650

10-14-2005, 09:52 AM	#8 (permalink)
jpkelly3 Registered User Join Date: Oct 2005 Member # 55475 Location: Delawhere Posts: 5	Yes Locktite was used and properly torqued. Thanks

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