Centinel System – Repair Manual – 008-062   Water Pump

CAUTION  Do not use petroleum based lubricants. Petroleum based lubricants cause the o-ring seals to crack, leading to a coolant leak.

Lubricate and install the new o-ring seal.

Install the two guide studs.

Install the water pump and three capscrews.

Remove the two guide studs and install the remaining mounting capscrews.

Tighten the capscrews.

Install a new o-ring seal in the water inlet.

Install the two guide studs.

CAUTION  Do not use petroleum based lubricants. Petroleum based lubricants cause the o-ring seals to crack, leading to a coolant leak.

Install a new o-ring seal in the water pump outlet groove.

Apply a thin layer of non-petroleum-based lubricant, such as vegetable oil, to both o-ring seals.

Use clean engine oil to lubricate the threads and bottom of the capscrew heads of all the water pump capscrews.

Install the water pump and two lower capscrews.

Tighten the capscrews to hold the pump in place.

NOTE: Some configurations do not use the middle aluminum belt tensioner bracket shown. Refer to Procedure for the appropriate tensioner bracket installation.

Install the belt tensioner bracket, if equipped, and capscrews in the location shown.

Finger tighten all capscrews.

Tighten the water pump mounting capscrews in the sequence and values shown.

Install a new o-ring seal in the water inlet.

Install the two guide studs.

CAUTION  Do not use petroleum based lubricants. Petroleum based lubricants cause the o-ring seals to crack, leading to a coolant leak.

Install a new o-ring seal in the water pump outlet groove.

Apply a thin layer of non-petroleum-based lubricant, such as vegetable oil, to both o-ring seals.

Use clean engine oil to lubricate the threads and bottom of the capscrew heads of all the water pump capscrews.

Position the water pump on the engine.

Install the bottom two capscrews finger tight.

NOTE: Some configurations do not use the middle aluminum belt tensioner bracket. Refer to Procedure 008-088 for the appropriate tensioner bracket installation.

NOTE: Early engines that did not have a slotted hole on the middle aluminum belt tensioner idler bracket required the vibration dampers to be removed to remove and install the water pump.

Install the belt tensioner bracket, if equipped, and the capscrews in the locations shown.

Finger tighten all capscrews.

Tighten the water pump mounting capscrews in the sequence and values shown.

Align the idler pulley (1) and the shaft of the pilot adapter (2) with the belt tensioner bracket (3) using the guide pin on the pilot adapter (4), if equipped.

Install the belt idler pulley and shaft on the belt idler bracket using one washer and capscrew.

Tighten the capscrew.

Install the dust seal.

CAUTION  Do not use petroleum based lubricants, petroleum based lubricants cause the o-ring to crack or swell, leading to a coolant leak.

Install a new water pump inlet o-ring seal and a new EGR tube outlet o-ring seal.

Install the five water pump housing capscrews.

Tighten the capscrews.

Install the two bracket capscrews.

Tighten the capscrews.

Install the EGR tube outlet capscrew.

Tighten the capscrew.