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11-20-2017, 07:35 PM
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#1
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Name: dangerous06
Title: diesel tech
Status: Not Here
Join Date: Mar 2008
Location: Escondido CA
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Posts: 3,564
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rear main seal
Anybody know what years changed the rear seal?
I Figure the third gens are all the same. 07.5 to 12 6.7 same as 5.9.?!
After that it gets confusing 13 to?
__________________
E.D. 66-74-091, T-4 exhaust, 2 Micron filter pre CP3, EFI, S&B intake, ARP 625 head studs, 182-214 Hamilton Cam,springs and push rods,40% injectors, Banks Intercooler, T&C CP-3 & PRV, Built
48RE, 5" exhaust,Carrillo rods, Pacbrake!
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11-20-2017, 07:48 PM
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#2
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Name: kleann
Title: VP44 pwr
Status: Not Here
Join Date: Aug 2008
Location: Down yonder
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Posts: 4,388
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Pretty sure the seal itself is the same for all the years. The gasket for the housing is different though.
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11-20-2017, 08:20 PM
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#3
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Name: BigPapa
Title: Truckless
Status: Not Here
Join Date: Jan 2008
Location: Springfield, TN
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Posts: 5,034
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From the ESN's I have for a '95, '98.5, '01, '06, '15, and '16, except for the '95 Cummins has superseded all the RR seals to a 5259499 Seal. The TSB is #TSB101035. This is what they say for the "Core Issue":
Quote:
This document announces the release of an improved rear crankshaft seal for B, C, ISB, ISC, and ISL (diesel and gas) engines.
The major design improvement is the contact surface of the rear crankshaft seal to the crankshaft. The new dry rear crankshaft seal is machined while the old rear seal is molded. This improvement will support all B, C, and L engine platforms.
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From that, I would think it would also be the same for at least the '94-'98 12V's. Maybe Jeff will jump in here and verify this.
__________________
Scott
2003 Avalanche Z71
Common sense is like deodorant. The people that need it most never use it.
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