Transfer Case Pump Rub

5252010 I may of gotten myself in over my head with this pump rub fix since i got to the driveshaft removal step and got snagged there.

Transfer case pump rub. This problem affects the 1500 2500 and 3500 series trucks but Im not 100 certain which year models. Thanks to Merchant Automotives all-inclusive pump upgrade kits a replacement billet-aluminum gear pump housing employs indexing tabs with much more surface area and smoothed edges so as to not dig into the transfer case. Because the pump is driven by the mainshaft the housing of the pump must float in the rear housing.

By installing a Merchant Automotive Transfer Case Pump Upgrade kit in your transfer case today before it happens to your vehicle. My 05 had 45000 miles and it had significant pump rub wear but did bot require a new case half. Basically the pump rub defect is a design flaw that exists in the T-cases equipped on 4x4 trucks 12 - 1 ton variety between 1997 - 2007 models.

As for the problem it is not if but more like when. This shows the inside of the rear case where the transfer case pump housing rubs. The GM transfer cases for model years 1998-2007 use a gear pump inside the case that is driven off the mainshaft.

1012012 He explained that since the pump rides the mainshaft of the transfer case it has to float in the rear housing. Start date Jan 5 2015. 11272015 I started by disconnecting the 4x4 encoder and removing it from the case.

GM transfer cases used from 1998 through early 2007 use a gear pump inside the case that is driven off the mainshaft. The differences are quite obvious in the. It was very easy to install if you are comfortable working on a transfer case.

No more leaking transfer case fluid all over my driveway and garage. Put the improved pump kit in the unit. Discussion Starter 1 2 h ago.