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87 GMC Jimmy/BLZ NP 208 Seal Question

MIKESMONZA

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May 19, 2006
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Cut,N Shoot,TEXAS
Went To check under my Jimmy For A Leak I have Been Aware Of,
Found the Np-208 Still Leaking (a Drip Bubble )was not, moving but the T- case, Body and Frame was wet with ATF

I Parked it Level, blocked tires ,droped n'pulled shaft,
Waited for t-Case Extension hounsing to stop driping,,,
Got Seal Puller Pulled Seal,,
Took a Replacement from a Parts Hose,, National,fedral-Mongul#3946 Seemed A little Bigger than hole,, looked closer at old seal >#15002
Under the truck on my back They Looked close,,,Bad Judgement!

Took a Little Pressure Taping it in,, with hammer and Realy Large 1'' drive socket No luck ,,after several trys,,re examined seal Now Damamged,,, $16.00,,,Got Second seal From Parts house,,same Part # .

Pulled the Extension Housing and cleaned it up,,
Placed Seal on hole,,No wonder It Would Not Go in,,
Got My Auto Measrement Caliper, it is a 1/16-to 1/8th Across,,wider than Original Seal

Edit;
At Napa Auto Parts counter We Found The Seal# 18992,(Napa Part #)
For the 87 NP-208 Transfer Case Output shaft to Slider Yoke on Drive Shaft,fit My Extesion Housing
The Other Parts House "Orileys" listing # 3946 was For a 97 Transfer Case,Listing Error???
The Other # 15002,Was Maybe another unknown Brand but fits,,,

Note; also The Napa Seal has a Dark Green Paint for sealing ,,at contact point on Alluminum Housing
while the other two Seals had Chevy Orange,
It Appears That The Seal from the Previous Owners Service > Left Green Paint Pigment In Seal Collar Seat,,
Mike
 
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Ran into exact same problem a few weeks ago. Went to O'Reilly's and got the seal and just would not fit. Then went to NAPA and asked for this one and I was rollin again. If it weren't for this thread I'd still be lost. Thanks for the info.
 
The Orileys Computer Listing,,
is In-Corect,, Needs A Look over,,for all of the TranferCases Rear TailShafts Seals,,
But Counter Persons/Emloyees ,,Store /WareHouse,Employees
Can not Make The Change,,

It would Be in all of our Interest to have some one,,
With Clout,
Fix It at the Corporate Level,,
Mike
 
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