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#1 |
Registered User
Join Date: Apr 2014
Location: Raleigh, NC
Posts: 51
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Pinion marks disappeared
So I made all of the proper pinion marks for a seal replacement with a paint pen. Now that I'm putting it back together I'm not confident the marks held up. Many threads appear not to have marks any longer. Am I screwed? If I'm close should I be good? The nut still has the marks and so does the top of the shaft, but just not sure how many threads to take the nut. Can I line up the lines and torque it to factory spec? Thanks for the help.
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#2 |
60-66 Nut
![]() ![]() Join Date: Mar 2007
Location: Coeur d'Alene, Idaho
Posts: 23,247
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Re: Pinion marks disappeared
I do not understand what lines or marks you are talking about?
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#3 |
Registered User
Join Date: Apr 2014
Location: Raleigh, NC
Posts: 51
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Re: Pinion marks disappeared
I marked the pinion nut, in relation to the yoke. And marked the nut along with the output shaft. And accounted for how many threads the nut was on the output shaft before removing to replace pinion seal. But the marks on the output shaft that showed where the nut needed to be, seem to have mostly rubbed off as the nut was removed.
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#4 |
Registered User
Join Date: Apr 2014
Location: Raleigh, NC
Posts: 51
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Re: Pinion marks disappeared
So, I have a GM handbook, and it shows the steps without mentioning preload, or removing axels to take the pinion nut and torque to 270 lb ft. I am wondering if this is my best bet as now I cannot confirm the proper placement of the nut from original markings. Thoughts?
Additional Note: If the crush sleeve was originally set to the proper spec, I would assume torquing to the original spec would work. |
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#5 |
Registered User
Join Date: Nov 2012
Location: 9
Posts: 862
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Re: Pinion marks disappeared
Are you trying to reuse the old crush sleeve? Thats kind of the way this reads. If that is the case then dont do that, they are a one time use.
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#6 |
Senior Member
![]() Join Date: Mar 2003
Location: Colfax-California
Posts: 8,519
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Re: Pinion marks disappeared
Stop making all the cross posting. What diff is this
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#7 |
Senior Member
![]() Join Date: Feb 2010
Location: Falls City, Nebraska "100 Miles From Nowhere"
Posts: 2,219
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Re: Pinion marks disappeared
KW's right, kinda need to know which rear end we're talkin about?
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Michael of the clan Hill, "Two Seventy Two's" 71 1-ton Dually 350 4-Speed 71 C/50 Grain Truck, 350 Split-Axle 4-Speed 02 3/4 ton Express 14 Indian Chief Vintage 1952 Ford 8N, "Only Ford Allowed On The Property" ![]() "Be American, Buy American" ![]() |
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#8 |
Registered User
Join Date: Apr 2014
Location: Raleigh, NC
Posts: 51
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#9 |
Senior Member
![]() Join Date: Feb 2010
Location: Falls City, Nebraska "100 Miles From Nowhere"
Posts: 2,219
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Re: Pinion marks disappeared
Did you get a new crush sleeve? The crush sleeve holds a preload on the bearings by collapsing a pre-bent shoulder on the sleeve. So anytime you relieve that preload your supposed to replace that sleeve, that's why you have to re-torque the pinion nut to such a high value. Now with that said, if you re-install the old sleeve like many guys do, you'll tighten that nut until there is no end play in the pinion shaft and give it another half of a hex or 1/12th of a turn. Make sure you use red Loctite on the nut. (I suggest making a holding plate for the yoke and use a cheater pipe to hold it. Use a cheater pipe on a good 1/2" or better yet 3/4" break-over bar to crush the new sleeve to zero endplay and your good.)
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Michael of the clan Hill, "Two Seventy Two's" 71 1-ton Dually 350 4-Speed 71 C/50 Grain Truck, 350 Split-Axle 4-Speed 02 3/4 ton Express 14 Indian Chief Vintage 1952 Ford 8N, "Only Ford Allowed On The Property" ![]() "Be American, Buy American" ![]() |
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#10 |
Registered User
Join Date: Apr 2011
Location: Klein Texas
Posts: 3,852
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Re: Pinion marks disappeared
QFT.
This has been answered by experts in another thread. No, just removing the yoke does not require a new crush sleeve.
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My Classics: '72 K20 Suburban + '65 Dodge Town Wagon '72 Corvette Roadster +'67 Corvette Roadster '73 Z-28 Camaro '63 Ford SWB Uni Pickup '50 Ford Coupe |
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#11 | |
Registered User
Join Date: Apr 2014
Location: Raleigh, NC
Posts: 51
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Quote:
Posted via Mobile Device |
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#12 |
Registered User
Join Date: Apr 2011
Location: Klein Texas
Posts: 3,852
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Re: Pinion marks disappeared
No. Under-torquing could lead to ring and pinion damage.
Over-torquing leads to early bearing wear/failure.
__________________
My Classics: '72 K20 Suburban + '65 Dodge Town Wagon '72 Corvette Roadster +'67 Corvette Roadster '73 Z-28 Camaro '63 Ford SWB Uni Pickup '50 Ford Coupe |
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#13 |
Account Suspended
Join Date: Jun 2015
Location: No longer here
Posts: 1,000
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Re: Pinion marks disappeared
I take it you have driven the vehicle already.....any leaks ? any noises ?
How was the seal surface of the pinion yoke where the seal rides ? |
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#14 |
60-66 Nut
![]() ![]() Join Date: Mar 2007
Location: Coeur d'Alene, Idaho
Posts: 23,247
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Re: Pinion marks disappeared
This is what I would suggest
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Power Steering Box Adapter Plates For Sale HERE Power Brake Booster Adapter Brackets For Sale '63-'66 HERE and '67-'72 HERE and '60-'62 HERE and "60-'62 with clutch HERE Rear Disc Brake Brackets For Sale. Impala SS calipers HERE Camaro Calipers HERE D52 Calipers HERE 6 Lug HERE Hydroboost Mounting Plates HERE |
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#15 | |
Registered User
Join Date: Apr 2014
Location: Raleigh, NC
Posts: 51
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Re: Pinion marks disappeared
Quote:
I took it out today. Everything ran great. No more seal leaks. I think since the nut and pinion still had paint on them, that may have been my saving Grace. I tightened the nut down until no play, then lined up all the paint marks with another few small turns. Seems to be all good. Thanks for everyone's help on this thread. |
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Tags |
differential, pinion, rear end, seal, torque |
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