What causes pump rub?
Pump rub is caused by the pump body tabs bearing against the rear case half, and the aluminum body is harder than the mangesium case, and so the case wears through. Pump rub will start when the little clip becomes dislodged or broken, and no fluid in the world is going to stop the physical process that begins.
What is pump rub?
Pump rub occurs when the four positioning tabs holding the pump in place wear over time. This causes the oil pump to come into contact with the housing itself. The result is a hole worn in the cover, causing fluid to leak and the probability of damaging the transfer case.
Does a transfer case have a pump?
GM transfer cases use a gear-driven pump inside the case that is driven off the mainshaft. Because of this design, the pump must “float” in the rear case half. There are four tabs around the edge of the pump that are used to locate it in the housing.
What causes pump rub on a Duramax?
What is Duramax pump rub?
Pump rub occurs when the four positioning tabs holding the pump in place wear over time. This causes the oil pump to come into contact with the housing itself. The result is a hole worn in the cover, causing fluid to leak and the probability of damaging the transfer case. This simple kit eliminates this problem.
What does a transfer case pump do?
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.
What causes a hole in the transfer case?
Apparently, there is an anti-rattle clip located inside the transfer case that breaks and causes the hole to form from the inside out. The scary thing about it is that there is no way to inspect it unless you tear apart the transfer case or it starts leaking.
Is there a seal between transmission and transfer case?
The front output shaft seal is an oil seal that is installed on the front of transfer cases. As its name implies, the front output shaft seal is responsible for sealing the front output shaft of the transfer case, keeping the gear oil or transmission fluid inside of the unit.
Can you upgrade a transfer case?
Almost anything you can think of to improve or upgrade your T-case is available today, and if it isn’t, you can just swap in an Atlas II T-case in one of the three low-range ratios available. Your options are endless when it comes to T-case upgrades.