looking for torque specs
#1
04-05-2008 | 10:39 PM
Thread Starter
Joined: Dec 2007
Posts: 21
From:
looking for torque specs
ok i am going to be redoing my rear drive train and was hoping someone knew what the torque specs of all the bolts inside the differental were so i dont over tighten or anything like that if you have a link that would be great or if you know i have been looking on google for it and cant seem to hit the rite links but ill keep trying til someone posts a link or knows also have been reading this chiltons book i have on the 98 jimmy also
thanks for all the help if i forget to say it again
thanks for all the help if i forget to say it again
#2
04-05-2008 | 11:29 PM
BF Veteran
Joined: Jun 2006
Posts: 3,429
From: Vancouver. B.C. Canada
RE: looking for torque specs
Hope this helps
Fastener Tightening Specifications
Bearing Cap Bolts
75N·m
55lbft
Differential Housing Cover Bolts (7.6" Axle)
30N·m
20lbft
Differential Housing Cover Bolts (8.6" Axle)
39N·m
29lbft
Fill Plug
33N·m
24lbft
Pinion Shaft Lock Bolt (7.6" Axle)
34N·m
25lbft
Pinion Shaft Lock Bolt (8.6" Axle)
36N·m
27lbft
Ring Gear Bolts
120N·m
90lbft
Vent Clamp Bolt
17N·m
13lbft
Fastener Tightening Specifications
Bearing Cap Bolts
75N·m
55lbft
Differential Housing Cover Bolts (7.6" Axle)
30N·m
20lbft
Differential Housing Cover Bolts (8.6" Axle)
39N·m
29lbft
Fill Plug
33N·m
24lbft
Pinion Shaft Lock Bolt (7.6" Axle)
34N·m
25lbft
Pinion Shaft Lock Bolt (8.6" Axle)
36N·m
27lbft
Ring Gear Bolts
120N·m
90lbft
Vent Clamp Bolt
17N·m
13lbft
#3
04-06-2008 | 03:00 PM
Thread Starter
Joined: Dec 2007
Posts: 21
From:
RE: looking for torque specs
ORIGINAL: Chevy Lover
Hope this helps
Fastener Tightening Specifications
Bearing Cap Bolts
75N·m
55lbft
Differential Housing Cover Bolts (7.6" Axle)
30N·m
20lbft
Differential Housing Cover Bolts (8.6" Axle)
39N·m
29lbft
Fill Plug
33N·m
24lbft
Pinion Shaft Lock Bolt (7.6" Axle)
34N·m
25lbft
Pinion Shaft Lock Bolt (8.6" Axle)
36N·m
27lbft
Ring Gear Bolts
120N·m
90lbft
Vent Clamp Bolt
17N·m
13lbft
Hope this helps
Fastener Tightening Specifications
Bearing Cap Bolts
75N·m
55lbft
Differential Housing Cover Bolts (7.6" Axle)
30N·m
20lbft
Differential Housing Cover Bolts (8.6" Axle)
39N·m
29lbft
Fill Plug
33N·m
24lbft
Pinion Shaft Lock Bolt (7.6" Axle)
34N·m
25lbft
Pinion Shaft Lock Bolt (8.6" Axle)
36N·m
27lbft
Ring Gear Bolts
120N·m
90lbft
Vent Clamp Bolt
17N·m
13lbft
what kind of back lash do i set the gears for if you know that? if there is any?
#4
04-06-2008 | 04:12 PM
RE: looking for torque specs
If you are reusing old gears and did not measure the backlash before you disassembled the diff, you are kind of out of luck. You could attempt to set back lash specs using the 0.005-0.009" backlash spec for new gears.
You need to first make sure that the gear pattern is centered on the tooth both forward and reverse. If it isn't, then you need to adjust your pinion depth. You should set pinion depth using an old crush sleeve as the spacer between the pinion bearings.
Once the pinion depth is correct, then you need to do the back lash test. You need to setup a dial indicator with the tip on one of the gear teeth. Move the ring gear until you are sure that it is hitting on the pinion gear and zero the indicator. Then, while holding the pinion gear fixed, rotate the ring gear until it contacts on the opposite side of the pinion tooth and note the backlash value. If it is outside of the spec, then you will have to move the shims side to side to bring it back into spec.
And that is provided that you already set the proper side bearing preload on the differential bearings.
You need to first make sure that the gear pattern is centered on the tooth both forward and reverse. If it isn't, then you need to adjust your pinion depth. You should set pinion depth using an old crush sleeve as the spacer between the pinion bearings.
Once the pinion depth is correct, then you need to do the back lash test. You need to setup a dial indicator with the tip on one of the gear teeth. Move the ring gear until you are sure that it is hitting on the pinion gear and zero the indicator. Then, while holding the pinion gear fixed, rotate the ring gear until it contacts on the opposite side of the pinion tooth and note the backlash value. If it is outside of the spec, then you will have to move the shims side to side to bring it back into spec.
And that is provided that you already set the proper side bearing preload on the differential bearings.
#5
04-06-2008 | 07:00 PM
Thread Starter
Joined: Dec 2007
Posts: 21
From:
RE: looking for torque specs
ORIGINAL: swartlkk
If you are reusing old gears and did not measure the backlash before you disassembled the diff, you are kind of out of luck. You could attempt to set back lash specs using the 0.005-0.009" backlash spec for new gears.
You need to first make sure that the gear pattern is centered on the tooth both forward and reverse. If it isn't, then you need to adjust your pinion depth. You should set pinion depth using an old crush sleeve as the spacer between the pinion bearings.
Once the pinion depth is correct, then you need to do the back lash test. You need to setup a dial indicator with the tip on one of the gear teeth. Move the ring gear until you are sure that it is hitting on the pinion gear and zero the indicator. Then, while holding the pinion gear fixed, rotate the ring gear until it contacts on the opposite side of the pinion tooth and note the backlash value. If it is outside of the spec, then you will have to move the shims side to side to bring it back into spec.
And that is provided that you already set the proper side bearing preload on the differential bearings.
If you are reusing old gears and did not measure the backlash before you disassembled the diff, you are kind of out of luck. You could attempt to set back lash specs using the 0.005-0.009" backlash spec for new gears.
You need to first make sure that the gear pattern is centered on the tooth both forward and reverse. If it isn't, then you need to adjust your pinion depth. You should set pinion depth using an old crush sleeve as the spacer between the pinion bearings.
Once the pinion depth is correct, then you need to do the back lash test. You need to setup a dial indicator with the tip on one of the gear teeth. Move the ring gear until you are sure that it is hitting on the pinion gear and zero the indicator. Then, while holding the pinion gear fixed, rotate the ring gear until it contacts on the opposite side of the pinion tooth and note the backlash value. If it is outside of the spec, then you will have to move the shims side to side to bring it back into spec.
And that is provided that you already set the proper side bearing preload on the differential bearings.
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