Instruction Manual

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PRW Industries, Inc.

1722 Illinois Avenue

Perris, California 92571

Tele: (951) 436-7900

Tech: (888) 377-9779

General Installation Instructions for PRW and

PQ Series High Flow Water Pumps

Thank you for purchasing a PRW or Performance Quotient® product. PRW and PQ² Series High Flow Water

Pumps are engineered and manufactured by PRW Industries, Inc. to maximize efficiency for many popular

engine models.

GENERAL INSTALLATION PROCEDURE

Step 1 - Cool Engine

Step 2 - Disconnect battery

Step 3 - Drain all coolant from the entire cooling system and engine cavity. Dispose of the coolant

according to EPA regulations.

Step 4 - Check the hoses, and radiator. If there are any signs of leakage or other problems replace or

repair. This will help prevent future trouble.

Step 5 - Remove the belts and fan. If there are any signs of wear replace.

Step 6 - Loosen the bolts and remove the old water pump.

Step 7 - Clean the engine block’s mounting surface area by removing any gasket or sealant deposits, and

any other residue.

Step 8 - Position new gaskets on water pump housing, using sealer on both sides. Make sure the gasket

matches the surface being sealed.

Step 9 - Carefully install the new PRW water pump. Do not strike the shaft! Hand - tighten the water

pump bolts into the block. Give the pump a quick spin to check for free operation.

Step 10 - Torque the bolts to OEM specifications using a crisscross pattern. Over tightened bolts could

damage the pump and void the warranty.

Step 11 - Hand-turn the pump again to make sure that it turns freely.

Step 12 - Inspect the radiator cap and thermostat. Replace, if they show any signs of sticking or leaking.

Step 13 - Reconnect the hoses using new clamps and sealant. Refer to the owner’s manual for any special

procedures.

Step 14 - Verify that the hoses are clear of all moving parts and that the clamps do not contact the pulleys,

brackets, and/or the fan.

Step 15 - Refill the cooling system and check for any leaks.

Step 16 - If a pulley is to be installed, mount it square on the pumps hub. Using lock washers, torque the

bolts to OEM specifications to insure against wobble-free operation.

Step 17 - Reinstall fan and spin by hand and inspect for any wobble. Maximum wobble should be 3/32”

at the outer edge if no clutch, and 0.250” with a clutch. Replace any fan clutch with excessive wobble,

looseness, or loss of oil. A misaligned or defective clutch will damage the water pump. Check the fan

blade tip clearances to the radiator and any shroud.

Step 18 - Check any electric cooling fan to insure it is working properly.

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PRW Industries, Inc. 1722 Illinois Avenue Perris, California 92571 Tele: (951) 436-7900 Tech: (888) 377-9779 General Installation Instructions for PRW and PQ Series High Flow Water Pumps Thank you for purchasing a PRW or Performance Quotient® product. PRW and PQ² Series High Flow Water Pumps are engineered and manufactured by PRW Industries, Inc. to maximize efficiency for many popular engine models.
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Step 19 - Reinstall the belts and adjust them using a tension gauge. Refer to OEM specifications for proper tension or adjust the belts to a deflection of ½” to ¾”. Inspect for any defects on the automatic tensioner or idler pulley. Automatic tensioners will normally tighten with use. Step 20 - Reconnect battery. Step 21 - Start the engine and let it run until it reaches normal operating temperature. Check for any leaks and make sure it is running smoothly.