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Old 12-28-2018, 01:00 AM   #35
hatzie
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Join Date: Oct 2008
Location: Wentworth, NH
Posts: 4,912
Re: Hatzies 2005 2500HD

Quote:
Originally Posted by TooTall View Post
Sure is a nice truck

I'm sure that you're aware, but just a reminder. Have you done the pump rub kit for the tcase yet? I got about 230K miles out of mine before it rub'd a hole followed up by several holes around 300K miles. It eventually took out the tcase one day from a lack of oil.
This is not something I want to tackle til April or May... with only @ 87,000 miles on the clock it's not super pressing to get it done when I'd be working on cold hard concrete at 0°to16°F in the unheated barn.

There are a couple pump housing replacements that are supposed to eliminate this issue on the NP263HD. I'm leaning toward the Merchant Automotive pump housing. I'm going to reseal the whole case while it's apart including the internal o-rings like the oil pump pickup tube o-ring. A lot of the howto videos make me cringe when I see them re-installing the oil pump pickup with the old o-ring.
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1959 M35A2 LDT465-1D SOLD
1967 Dodge W200 B383, NP420/NP201 SOLD
1969 Dodge Polara 500 B383, A833 SOLD
1972 Ford F250 FE390, NP435/NP205 SOLD
1976 Chevy K20, 6.5L, NV4500/NP208 SOLD
1986 M1008 CUCV SOLD
2000 GMC C2500, TD6.5L, NV4500
2005 Chevy Silverado LS 2500HD 6.0L 4L80E/NP263
2009 Impala SS LS4 V8


RTFM... GM Parts Books, GM Schematics, GM service manuals, and GM training materials...Please include at least the year and model in your threads. It'll be easier to answer your questions.
And please let us know if and how your repairs were successful.

Last edited by hatzie; 12-28-2018 at 09:42 AM.
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