Pinion nut torque

[R.K.]

What's the torque setting on the pinion nut on an FJ40 supposed to be?

 

[lostmarbles]

What's the torque setting on the pinion nut on an FJ40 supposed to be?

144 - 173 ft-lbs (or 20.0 - 24.0 kg-m)

 

[amaurer]

144 - 173 ft-lbs (or 20.0 - 24.0 kg-m)

Yeah, enjoy doing that laying on your back...

 

[CruisinMT]

jeebus how much are torque wrenches that measure that many ft/lbs?

 

[amaurer]

jeebus how much are torque wrenches that measure that many ft/lbs?

150ftlbs is the limit for a lot of wrenches, its not uncommon. My craftsman was $70, I think?

As I'm thinking on this, I seem to recall that given the slop you're wrenching against, it can be a real pain to do this. When I did it the rear was a piece of cake, but the front didn't leave me enough clearance to "ratchet" the wrench. I think I did it with a floor jack to lift the end of the wrench up and there was some rocking the truck back an forth involved too. Be creative...

 

[CruisinMT]

150ftlbs is the limit for a lot of wrenches, its not uncommon. My craftsman was $70, I think?

As I'm thinking on this, I seem to recall that given the slop you're wrenching against, it can be a real pain to do this. When I did it the rear was a piece of cake, but the front didn't leave me enough clearance to "ratchet" the wrench. I think I did it with a floor jack to lift the end of the wrench up and there was some rocking the truck back an forth involved too. Be creative...

I found your thread about the very same issue i'm having with my rear diff. I will try tightening it tonight. Have you had to replace your rear third yet? I'm hoping the nut is just loose on mine so i can bandaid it till i get the funds to rebuild it. Could you hear differences in the noise when you went over bumps as the DS angle changed?

 

[CruisinMT]

Anyone know how many mm's the pinion nut is for a 1967?

 

[amaurer]

I found your thread about the very same issue i'm having with my rear diff. I will try tightening it tonight. Have you had to replace your rear third yet? I'm hoping the nut is just loose on mine so i can bandaid it till i get the funds to rebuild it. Could you hear differences in the noise when you went over bumps as the DS angle changed?

I didn't replace it. I've checked it several times since and the nut hasn't loosened. Also the noise has lessened over time; one of the biggest improvements came from making sure the shaft was aligned properly (in phase) and tightening the nut on the TC output to spec.

 

[CruisinMT]

The pinion nut was loose so i tightened it i wrenched on that bitch for an hour and a half. I staked it up and greased the DS and put it back on as well. Both seemed to help. Also found a used Diff not too far away as well.