Pinion seal replacement 8.75 742 case. - Moparts Forums

Register Log In Moparts Forums Moparts Question and Answer Pinion seal replacement 8.75 742 case.

Print Thread

Pinion seal replacement 8.75 742 case. #1517517 10/14/13 05:53 PM 10/14/13 05:53 PM
Joined: Jun 2013 Posts: 870 Keizer, Oregon U.S.A. E elmor353 OP super stock
elmor353 OP super stock E Joined: Jun 2013 Posts: 870 Keizer, Oregon U.S.A.	Need to change the pinion seal on my 742 case. Been trying to find a replacement seal and the parts store keeps telling me there are several different sizes. WTF? Are there different ID and OD dimensions for a 742? And what is the torque setting for tightening the pinion nut?

Re: Pinion seal replacement 8.75 742 case. [Re: elmor353] #1517518 10/14/13 05:58 PM 10/14/13 05:58 PM
Joined: Sep 2007 Posts: 14,889 up yours Supercuda About to go away
Supercuda About to go away Joined: Sep 2007 Posts: 14,889 up yours	742 case is a 1 3/4" diameter pinion I believe. 1.375/1.38 is the 741 case and the 489 is 1.875". They say there are no such thing as a stupid question. They say there is always the exception that proves the rule. Don't be the exception.

Re: Pinion seal replacement 8.75 742 case. [Re: elmor353] #1517519 10/14/13 06:13 PM 10/14/13 06:13 PM
Joined: Aug 2003 Posts: 43,228 Bend,OR USA C Cab_Burge I Win
Cab_Burge I Win C Joined: Aug 2003 Posts: 43,228 Bend,OR USA	Quote: Need to change the pinion seal on my 742 case. Been trying to find a replacement seal and the parts store keeps telling me there are several different sizes. WTF? Are there different ID and OD dimensions for a 742? And what is the torque setting for tightening the pinion nut? Ask for and buy both pre 1968 or older 8 3/4 pinion seals in the catatlog and bring the one you don't use back for a return, most auto parts stores will do that when there is more than one part number for the same year car and parts involved I use 150 ft lbs on the torque wrench and then add some pull to make sure thier tight If your changing the seal in the car you will have a hard time getting that much torque on it without a really good air 1/2 inch Hipo impact gun I use a big pipe wrench on the pinion yoke to hold it while tightening the pinion nut, it helps to have a helper hold the pipe wrench so you can use both hands on the torque wrench to pull with Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)

Re: Pinion seal replacement 8.75 742 case. [Re: elmor353] #1517520 10/15/13 12:34 AM 10/15/13 12:34 AM
Joined: Nov 2004 Posts: 3,544 Syracuse,NY CompWedgeEngines master
CompWedgeEngines master Joined: Nov 2004 Posts: 3,544 Syracuse,NY	#7216 RIP Monte Smith Your work is a reflection of yourself, autograph it with quality. WD for Diamond Pistons,Sidewinder cylinder heads, Wiseco, K1 rods and cranks,BAM lifters, Morel lifters, Molnar Technologies, Harland Sharp, Pro Gear, Cometic, King Engine Bearings and many others.

Re: Pinion seal replacement 8.75 742 case. [Re: CompWedgeEngines] #1517521 10/15/13 04:29 AM 10/15/13 04:29 AM
Joined: Jun 2013 Posts: 870 Keizer, Oregon U.S.A. E elmor353 OP super stock
elmor353 OP super stock E Joined: Jun 2013 Posts: 870 Keizer, Oregon U.S.A.	Thanks guys. You always save my bacon. I owe y'all a beer.

Re: Pinion seal replacement 8.75 742 case. [Re: elmor353] #1517522 10/15/13 04:32 AM 10/15/13 04:32 AM
Joined: Jun 2013 Posts: 870 Keizer, Oregon U.S.A. E elmor353 OP super stock
elmor353 OP super stock E Joined: Jun 2013 Posts: 870 Keizer, Oregon U.S.A.	About the only one I can buy a beer for and thank face to face is Mr Cab Burge. Catch you at the NW Mopar nationals in Woodburn next year.

Moderated by Al_Alguire, Hotwheelsjr, moparts, not_a_charger, RangerDan440, tboomer

Hop To

Powered by UBB.threads™ PHP Forum Software 7.7.1