Due to the use of new parts on these units, there will be a certain amount of time needed for break-in. We suggest that a 500 mile run-in be allowed and the noise will go away.
This is not necessarily the fault of the pump. A defective, worn belt or defective valves and or check valves could be the problem. These should be checked and replaced before the pump.
The pump did not burn up, however the shaft broke due to a stress fracture caused by:
The engine overheating could be due to components other than the water pump. The following should be checked and replaced, if necessary, before the pump is. Flush the system. Check hoses, clamps and seals. Check radiator cap and thermostat. Check for proper and sufficient coolant. Check for cracks, warpage and other damage.
Several styles used are: distributor, fuel pump, gear driven (cam type), belt driven, and electric.
No. The original pulley must be transferred to replacement pump.
ALWAYS use the proper pulley puller to remove the pulley. Use the installation tool supplied in the box and follow the installation instructions provided. NEVER hammer on pulley or pump to remove or install pulley.
The range produced by vacuum pumps can be 18 to 24 inches of Hg (vacuum), depending upon application.
Check for loose, cracked, missing vacuum lines or fittings.
A damaged diaphragm or bad internal seals can cause oil leaks. Replacement of unit is necessary.
Check the air inlet. Debris, contamination, blocked filter or collapsed hoses may be preventing air from entering unit. Also check the condition of the unit for excessive wear. Repair or replace as necessary.
A bent shaft, damaged housing, seized bearings, a defective oil pump or a worn valve train could have placed too much load on gears causing damage or abnormal wear. Always check the original unit’s gear teeth. If any wear or damage is found, the drive gear, (cam gear/shaft) should be checked and repaired as necessary.
If motor does not run check fuse, wiring and control switch. Check air inlet, be sure it is free of debris and hoses are good. If a filter is installed, check for blockage. Carefully tap on the unit lightly with the ignition key in the run position. If the unit runs, the motor armature is bad. Replace the vacuum pump.