Re: Dana 60 pinion yoke tightness
[Re: JACKSON]
#425526
08/01/09 10:01 PM
08/01/09 10:01 PM
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Joined: May 2005
Posts: 6,446
NJ-USA
HPMike
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master
Joined: May 2005
Posts: 6,446
NJ-USA
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Quote:
i just switched out my small pinion yoke for a 1350 MW pinion yoke, my question is i know there is no crush sleeve but can you over tighten one or untighten it. how close is the nut to being in the same position it came out crucial?
i dont need any problems with this simple install.
Trying to get it at the "same position" is a waste of time, as there is likely going to be a difference in how much spline engagement/depth the new yoke has over the old one.
The best and most accurate way would be to pull the axles and remove the spool/locker. Check the rotational torque with an inch pound torque wrench and go a "little tighter" than before. Final rotational torque should be around 15-18 in/lb. Use a new nut and put some ARP thread lube on the back of the nut and back of the washer. Loctite on the nut and you may also want to stake the nut for good measure. Doesn't really take too long. Those big Timken TR's need preload.
MB
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Re: Dana 60 pinion yoke tightness
[Re: Cab_Burge]
#425529
08/02/09 01:24 AM
08/02/09 01:24 AM
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Anonymous
Unregistered
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Anonymous
Unregistered
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Quote:
Dana 60 torque spec on the pinion nut is 250 to 270 ft. lbs, they have never had a cruch sleeve or crush collar, shims only on all four corners  I use to use a 10 ft. cheater bar on a 3/4 drive breaker bar and jump up and down on it to tighten the pinion nut on the Dana 60 rear end in my old hemi drag car, never had one come loose or fail
with a 10 foot cheater bar you probably had 600 ft lbs on that thing. 
any grown man should be able to pull 250 ft lbs with a normal length torque wrench. 
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Re: Dana 60 pinion yoke tightness
[Re: DoctorDiff]
#425530
08/02/09 09:30 AM
08/02/09 09:30 AM
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Joined: Apr 2009
Posts: 169
Nazareth,Pa.
JACKSON
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OP
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Posts: 169
Nazareth,Pa.
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Quote:
Vintage Dana 60 rears use shims but late model versions come with crush sleeves.
my dana is is a 69 model out of a gtx.
isnt this a simple install, HP mike is talking about removing the rear cover ,pulling axles
if there are shims inside shouldnt this be a no brainer or am i missing something here.
dr. diff is saying crush sleeve 
now im totally 
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Re: Dana 60 pinion yoke tightness
[Re: JACKSON]
#425532
08/02/09 09:41 AM
08/02/09 09:41 AM
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Joined: May 2005
Posts: 6,446
NJ-USA
HPMike
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master
Joined: May 2005
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Quote:
Quote:
Vintage Dana 60 rears use shims but late model versions come with crush sleeves.
my dana is is a 69 model out of a gtx.
isnt this a simple install, HP mike is talking about removing the rear cover ,pulling axles
if there are shims inside shouldnt this be a no brainer or am i missing something here.
dr. diff is saying crush sleeve
now im totally
There is no crush sleeve in the unit you have, it uses shims for bearing preload. Theoretically, you should be able to just whack the new yoke on with a quality 1/2 air gun and it will be good to go. Or if you can successfully hold the pinion from turning, torque it down. You can successfully replace the yoke without taking the carrier out, but it just isn't real hard to take the carrier out. Least it gives you a chance to check things, and with the carrier out there isn't any guesswork. You will know you have the pinion loaded right. It's just hard to get a feel for anything with everything installed.
MB
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Re: Dana 60 pinion yoke tightness
[Re: topside]
#425537
08/02/09 06:07 PM
08/02/09 06:07 PM
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Joined: Aug 2003
Posts: 43,176
Bend,OR USA
Cab_Burge
I Win
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I Win
Joined: Aug 2003
Posts: 43,176
Bend,OR USA
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Quote:
Just went through this a couple months ago; at 125 ft/lbs, my Dana had a clunking sound after 1 pass, like the ring & pinion were eating each other. Tightening the nut to 250 took care of the noise, but even with a nice wear pattern (pulled the cover & checked it), it seems to have made the car harder to push. Spool, 5.38, housing/tubes are straight.
I might experiment with backing it off to 200 ft/lbs.
don't do it,  the 250 to 280 Ft lbs was the torque used in engineering that rear end and deciding on which bearings, races and yoke design to use in it 
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
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Re: Dana 60 pinion yoke tightness
[Re: topside]
#425539
08/03/09 12:37 AM
08/03/09 12:37 AM
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Joined: May 2005
Posts: 6,446
NJ-USA
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master
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Quote:
Well, not trying it WOULD be one less flirtation with disaster...but I've heard "anything over 200 is OK".
Think of it this way...
All things being equal, the amount of effort to rotate the pinion when properly preloaded, say 15 in/lb, over if there was virtually no preload, is probably a very small fraction of 1 HP.
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I didn't know that until today, thanks Dr Diff 
