This belt connects to the engine crankshaft, but this part is subject to corrosion and leaks. Usually, the water pump is driven by a belt. Failed Water Pump The water pump is responsible for circulating the coolant through the system. Replace Fuel Filter Every 30,000 to Prevent Fuel Pump Failure Heater Core Under Right Side of Dashboard May Leak Engine Coolant Intake Manifold Gaskets May Leak Coolant or Engine Oil Transmission Output Seal May Leak and Mount Replacement Door Locks Stop Working Service transmission every 30,000 miles Power Window Motors May Fail From. Clamp the aluminum arm flat in a vise and remove the pulley center bolt - the bolt shoulder bears on the pulley bearing inner race. Eventually, the coolant will begin leaking outside of the engine, indicating a serious issue. Use a 10mm open end wrench on the hump on the aluminum tensioner spring arm to release the tension - put a couple of drops of synthetic engine oil at the edge of the large flat axle river - the spring arm rotates on that pin. The tensioner is held on by two 10mm studs - the same ones that hoold the shroud.
Might as well check the water pump drive tensioner pulley while you're in there - they start to go bad at about 75,000 miles. Head gasket leak, where the coolant is allowed to enter the engine cylinder Engine block leak, where the stressed metal cracks and leaks coolant Water pump. rippypartsmaster or Yes, you need to drain the cooling system, and that "black bracket" is the water pump drive system safety shroud. I can't find anything on the various forums detailing any kind of gasket there, and. If any of those screws are loose it will cause a leak. There are six 10mm screws that hold the water pump to the block. I think that the stock coolant is red or orange. I examined as best I could above that point and can't see anything wet up above. You can check your coolant color by pulling out the dip sitck on your overflow tank and dabbing it on a white rag. if its coming from the weep hole, its time for a new pump. On inspection it appears that the coolant is seeping from where the small hard pipes go through the water pump cover (picture attached). locate the weep hole on the bottom of the water pump first, dry it all off with a rag, then fire her up and get under there and see where its coming from. Click to expand.New design water pump housing cover with thermostat and new gasket (formed silicone seal) is about $50 in an ACDelco box. The leak appeared just under the water pump.
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