exchaning 12 bolt carrier. - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Ed ke6bnl · 04-22-2003, 07:50 AM

I need to know if I can and how to exchange carriers from one 12 bolt 3.73 for another 12 3.73. The present one is noisy. The replacement has a worn posi (want to rebuild but another question) Am I correct that I need to pull the axle then ?? remove pinion nut and flange and then carrier bearing caps and pull out carrier assembly. Will I need to be concerned about crush sleeve and or gear meshing. Any help the book has completely confused me. Ed ke6bnl So.Calif.

JimKshortstep4x4 · 04-22-2003, 09:15 AM

Are you changing gears or just the carriers?

If just the carriers, then you will not have to do anything with the pinion.

Jim

Yellow Cheyenne · 04-22-2003, 03:32 PM

I'm not a gear expert, but if he is fighting a noise problem, it seems to me that it would be best to change the pinion and ring gear as a set. Regardless, I would think it would be best to keep gears that have been run together as a set for 30+ together as a set. If so, you would want to buy a carrier bearing kit for the rearend, which would give you the crush sleeve as part of the kit. Another possibly easier avenue may be to replace the complete rear axle assembly, that way you don't have to worry about setting it up or paying someone to set it up. If they are not done correctly, you will have problems with noise and short gear life.

Ed ke6bnl · 04-22-2003, 05:22 PM

Quote:

Originally posted by JimKshortstep4x4
Are you changing gears or just the carriers?

If just the carriers, then you will not have to do anything with the pinion.

Jim

I was thinking that if I pull the pinion with the carrier along with the spacers and crush sleeve that the meshing of the ring and pinnon should be the same?? Never had one apart just kinda tried understand the book. Ed ke6bnl

04-22-2003, 07:50 AM	#1
Ed ke6bnl Registered User Join Date: Mar 2002 Location: Agua Dulce, Ca. usa Posts: 179	exchaning 12 bolt carrier. I need to know if I can and how to exchange carriers from one 12 bolt 3.73 for another 12 3.73. The present one is noisy. The replacement has a worn posi (want to rebuild but another question) Am I correct that I need to pull the axle then ?? remove pinion nut and flange and then carrier bearing caps and pull out carrier assembly. Will I need to be concerned about crush sleeve and or gear meshing. Any help the book has completely confused me. Ed ke6bnl So.Calif. __________________ Ed ke6bnl Agua Dulce 70 S.E. Los Angeles 70 Chevy short bed 1948 F3 ford pu 1949 F1 stock V8 flathead 3 on floor 1950 F1 pu street rod 1948 F6 Ford Dually/350sbc no bed stock trans&rear 1972 El Camino 4" chop 1953 Chevy 3100 2b daily driver 1970 SB 4X4 400ci 6in lift

04-22-2003, 03:32 PM	#3
Yellow Cheyenne Registered User Join Date: Jun 2001 Location: Eastern Kansas Posts: 488	I'm not a gear expert, but if he is fighting a noise problem, it seems to me that it would be best to change the pinion and ring gear as a set. Regardless, I would think it would be best to keep gears that have been run together as a set for 30+ together as a set. If so, you would want to buy a carrier bearing kit for the rearend, which would give you the crush sleeve as part of the kit. Another possibly easier avenue may be to replace the complete rear axle assembly, that way you don't have to worry about setting it up or paying someone to set it up. If they are not done correctly, you will have problems with noise and short gear life. __________________ '72 Cheyenne. AC, PS, PB, Rear slider window, tilt. Light yellow (grapefruit yellow according to new sales literature from '72) '56 Chevy short step V-8 (My dad bought it new!!) '70 Olds 442 convertible '70 Olds Rallye 350

04-22-2003, 09:15 AM	#2
JimKshortstep4x4 Senior Member Join Date: Jul 2001 Location: Muskegon,MI,USA Posts: 6,026	Are you changing gears or just the carriers? If just the carriers, then you will not have to do anything with the pinion. Jim



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