Usage:
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At operating temperature, the engine coolant is hot and under pressure. Steam can cause personal injury. Check the coolant level only after the engine has been stopped and the fill cap is cool enough to touch with your bare hand. Remove the fill cap slowly to relieve pressure in the cooling system. Cooling system conditioner contains alkali. Avoid contact with skin and eyes to prevent personal injury. |
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1. Drain the coolant from the cooling system into a suitable container for storage or disposal.
2. Loosen bolts (1) and (2) on water pump drive (3).
3. Remove V-belt (4) from the drive pulley on the water pump and the pulley on the water pump drive.
4. Remove two hose clamps (5). Disconnect the hose used between the water pump and the water temperature regulator housing at the water pump.
5. Remove four bolts (6) that hold the water pump to the front of the engine. Carefully remove the water pump and two O-ring seals from the front of the engine.
NOTE: The following steps are for the installation of the water pump.
6. Check the condition of the two O-ring seals used between the water pump and the cylinder block. If the seals are damaged, use new parts for replacement.
7. Install the two O-ring seals in the cover of the water pump. Put the water pump in position on the front of the engine, and install four bolts (6) that hold it.
8. Connect the short hose used between the water pump and the water temperature regulator housing to the water pump. Install two clamps (5) that hold the hose in position.
9. Put V-belt (4) in position on the water pump drive pulley and the pulley on water pump drive.
10. Adjust the tension of water pump drive V-belt (4). Bolt (7) or square hole (8) are used to apply and hold V-belt tension. See the topic "Alternator And Fan Drive Belts, Inspect/Adjust/Replace" in the 3114 & 3116 ATAAC Diesel Truck Engine Operation & Maintenance Manual, Form No. SEBU6723. Also, refer to the "Belt Tension Chart" in the 3114 & 3116 Diesel Truck Engines Specifications module, Form No. SENR6436.
11. Fill the cooling system with coolant to the correct level. See the topic "Cooling System" in the 3114 & 3116 ATAAC Diesel Truck Engine Operation & Maintenance Manual, Form No. SEBU6723.
Disassemble & Assemble Water Pump
Start By:
a. remove water pump
1. Remove two O-ring seals (1) from the rear cover of the water pump. Remove four bolts (2) and the washers. Remove the rear cover and gasket.
2. Put the water pump in a press. Use spacer plates to level the water pump as shown.
3. Using a suitable size drive plate from Tool (A) and a press, push the shaft and pulley (3), as a unit, out of impeller (4). Remove the impeller.
| NOTICE |
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Do not allow the shaft and pulley to fall to the floor as it is being removed from seal (5) and the water pump housing. Damage to the shaft and pulley will result. |
4. Continue to push the shaft and pulley out of seal (5) and the water pump housing.
5. Using the handle from Tool (B) and a press, remove seal (5) from the water pump housing.
6. Using a press, remove the shaft and bearing assembly from pulley (3).
NOTE: The following steps are for the assembly of the water pump.
7. Using a press, install the shaft and bearing assembly into pulley (3). Install the shaft until it is flush with the end of the pulley.
8. Press the shaft, bearing assembly and the pulley, as a unit, into the water pump housing. Install the unit until the distance between the front face of pulley (3) and the machined surface of the water pump housing is 103.8 ± 0.3 mm (4.09 ± .01 in). See Illustration C20417P1.
9. Using Tool (C) and a press, install seal (5) in the water pump housing.
10. Using a press, install impeller (4) on the shaft of the water pump. Install the impeller until the distance between the impeller and the machined surface of the water pump housing is 0.75 ± 0.25 mm (.030 ± .010 in). See Illustration C20417P1.
11. Check the condition of the gasket used between the rear cover of the water pump and the water pump housing. If the gasket is damaged, use a new part for replacement. Put the gasket and cover in position on the water pump housing. Install four bolts (2) and the washers that hold the rear cover in position.
12. Check the condition of two O-ring seals (1). If the seals are damaged, use new parts for replacement. Install the two O-ring seals in the rear cover.
End By:
a. install water pump