Pinion Seal? maybe? i dunno! - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Prerunner1982 · 08-18-2003, 03:22 AM

ok.. my truck has been leaking gear fluid from where the driveshaft meets the axle..... how hard is this to fix/replace?

RockHQ · 08-18-2003, 09:40 AM

Haven't really looked into this but as far as i know you'll need a new crush sleeve for the pinion to set the correct pinion preload after you take off the yoke for the driveshaft. That, and a LONG extention bar to get the pinion nut off. Someone with more experience will most likely chime in.

Txstruck · 08-18-2003, 05:21 PM

RockHQ said it correctly, but be sure to use a torque wrench when putting the pinon nut back on as to not throw the pinion/ring gear out of whack. I had to replace mine and it took les than an hour. If I remember corectly, you will have to tap the new crush sleeve in place.

God luck! and have fun. Its not too bad

Prerunner1982 · 08-19-2003, 02:46 AM

will have to look at it more before i decide to do it. never messed with an axle that much before, and being my only working vehicle at the moment, i cant afford to have it down for more than a few hrs. thanks guys

loweredd · 08-19-2003, 02:45 PM

Isnt there a torque spec for using an old crush sleeve? I thought I saw that somewhere before???

RockHQ · 08-19-2003, 04:31 PM

I don't think a torque spec for a used sleeve will do any good, the crush sleeve is...well, meant to crush when you tighten the pinion and gives a correct preload that way?

jimfulco · 08-21-2003, 11:41 AM

Don't forget the torque to turn is in INCH-pounds. The torque spec difference is from new bearings to used bearings.

08-18-2003, 03:22 AM	#1
Prerunner1982 Registered User Join Date: Oct 2002 Location: Edmond, OK Posts: 5,906	Pinion Seal? maybe? i dunno! ok.. my truck has been leaking gear fluid from where the driveshaft meets the axle..... how hard is this to fix/replace? __________________ Jon 1982 Chevy Silverado 350/th350.... RETIRED 1993 Jeep XJ 2 door(Cherokee) 4wd 4.0ltr/AX-15 (5spd)/NP231 .... Oklahoma Roll Call

08-18-2003, 09:40 AM	#2
RockHQ ROCKET POWER! Join Date: Feb 2003 Location: Finland, Europe Posts: 509	Haven't really looked into this but as far as i know you'll need a new crush sleeve for the pinion to set the correct pinion preload after you take off the yoke for the driveshaft. That, and a LONG extention bar to get the pinion nut off. Someone with more experience will most likely chime in. __________________ What did i do last nite? I had a wonderful time, That's what they tell me What did i do last nite? 1979 C-10 shortfleet: Olds 350, Th400, 12 bolt Current project: 1969 Olds 455 W-30, needing a rebuild

08-18-2003, 05:21 PM	#3
Txstruck Registered User Join Date: Nov 2002 Location: Dallas Posts: 459	RockHQ said it correctly, but be sure to use a torque wrench when putting the pinon nut back on as to not throw the pinion/ring gear out of whack. I had to replace mine and it took les than an hour. If I remember corectly, you will have to tap the new crush sleeve in place. God luck! and have fun. Its not too bad __________________ Steve 86 K30 4x4 6.2L Diesel\TH400\NP208 - 14bolt FF rear w/detroit locker and Dana60 front w/detroit locker- both with 4.56 gears "Runs on Mud"

08-19-2003, 02:46 AM	#4
Prerunner1982 Registered User Join Date: Oct 2002 Location: Edmond, OK Posts: 5,906	will have to look at it more before i decide to do it. never messed with an axle that much before, and being my only working vehicle at the moment, i cant afford to have it down for more than a few hrs. thanks guys __________________ Jon 1982 Chevy Silverado 350/th350.... RETIRED 1993 Jeep XJ 2 door(Cherokee) 4wd 4.0ltr/AX-15 (5spd)/NP231 .... Oklahoma Roll Call

08-19-2003, 04:31 PM	#6
RockHQ ROCKET POWER! Join Date: Feb 2003 Location: Finland, Europe Posts: 509	I don't think a torque spec for a used sleeve will do any good, the crush sleeve is...well, meant to crush when you tighten the pinion and gives a correct preload that way? __________________ What did i do last nite? I had a wonderful time, That's what they tell me What did i do last nite? 1979 C-10 shortfleet: Olds 350, Th400, 12 bolt Current project: 1969 Olds 455 W-30, needing a rebuild

08-19-2003, 02:45 PM	#5
loweredd www.loweredd.com Join Date: Aug 2002 Location: Struble IA Posts: 808	Isnt there a torque spec for using an old crush sleeve? I thought I saw that somewhere before???

08-21-2003, 11:41 AM	#7
jimfulco Registered User Join Date: May 2003 Location: Shreveport LA Posts: 3,170	Don't forget the torque to turn is in INCH-pounds. The torque spec difference is from new bearings to used bearings.



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