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Transfer Case Pump Upgrade Kit
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Item Number: tcp
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Here is the best upgrade you can make to your GM transfer case(model 136, 146, 246, 261, 261HD, 263HD, 263XHD, 261XHD). Prevent the ever increasing problem of pump rub.
What is "pump rub"
The GM transfer cases use a gear pump inside the case that is driven off the mainshaft. The pump forces oil to the planetary as well as the drive sprocket sleeve. Because the pump is driven by the shaft, the housing of the pump must 'float' in the rear housing. There are 5 tabs around the housing that fit into spots in the rear housing to position the pump. Over time, the pump can start to wear on the rear housing. GM installed a spring steel clip in the housing intended to prevent wear but the clip can break and render useless
Being that the pump housing is aluminum and is a harder material then the magnesium rear housing, it can wear a hole in the rear housing and cause a very small leak. This leak is high enough in the case that it typically will not leak when vehicle is not moving and therefor not leaving any drops on the ground. Typically the condition is not found until there is transfer case damage from running the case out of fluid.
Avoid costly repairs to your transfer case by preventing this condition.
Full installation instructions are available right here on this site. Look under the Tech Information link on the home page for step by step directions.
With installation of this kit, you will have a LIMITED LIFETIME WARRANTY against pump rub. If your case ever wears a hole in the case with the upgrade installed, We will buy you a new transfer case.
Included in the kit:
If you already have a hole in your case, its recommended to install a new rear housing for a proper repair. Lifetime warranty will not apply to a case that the rear housing has been repaired.
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Price: CALL FOR INFORMATION AND PRICES
Merchant Automotive can handle all of your transfer case needs whatever they may be.
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Product Reviews
| (12 Ratings, 5 Reviews) |
Average Rating:
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Transfer case pump upgrade kit
David Griffith
(Colorado)
6/4/2010 10:59 PM
So I purchased this kit almost 3 years ago and finaly got around to doing the kit, I must say if I would have known it would of been this easy I would have done this alot sooner. Anyways the other day I drained my transfer case fluid and shure enough there was part of the clip stuck to the maganet..
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ingenius
Chris Knaffle
(Jackson, MI)
5/3/2010 10:22 PM
Everybody needs this. They all rub through eventually, leaving you stranded and costing you thousands. My dad's went out on a trip from Michigan to Florida - cost him 3 days and $2800 at the dealer! This kit is cheap insurance, so don't get caught without it!
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Transfer case pump upgrade
Ron Wells
(Nebraska)
3/15/2010 11:04 AM
Pretty easy with the instructions MA provides, and is a great relief I shouldn't ever have to mess with that issue ever again. Thank God for Merchant automotive for there awesome products and excellent customer service which keeps me from ever stepping foot in a dealer parts room again. Excellent pricing on all there parts as they beat dealer costs in half if not 65%. Thank you MA.
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Shadetree Certified Mechanic
Nathan
(Houston)
11/9/2009 11:15 AM
This was a pretty straight forward install. I installed this with a new back half case because mine rubbed through. Did it in my driveway, just needed a jack and a couple of stands. Here's my input for someone considering this:
1. The boot on the front driveshaft can be removed without cutting it, just bend the teeth on the metal clamp with some needle nose pliers.
2. You do not have to remove the torsion bar crossmember, just the tranny mount crossmember. i supported the engine with a jackstand and a piece of wood under the oil pan.
3. The oil pickup tube in the case was plugged with RTV. Take it out and clean it up. Make sure to not put too much RTV back on when reassembling or it will clog up again.
4. It is not hard and will save you some big $$$ in labor or possibly having to replace a transfer case. Do it!!!
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OWNER/ABC MOTORS
john archie
(santa fe, NM)
6/19/2009 6:58 PM
This product is everything it is cracked up to be!
I've installed a couple, with out any problems.
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Customer Truck Photos
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