Water Pump: Service and Repair

Coolant pump, removing and installing

Special tools and equipment






- Socket head fastener T10092






- Pin T40011

Removing

- Engine in vehicle.
- Lock carrier must be in service position. Refer to Body and Frame - Radiator Support - Service and Repair - Procedures [1][2]Procedures

- Drain coolant.
- Remove ribbed belt and tensioner for ribbed belt. Refer to Drive Belts, Mounts and Accessories - Drive Belt - Service and Repair - Procedures Service and Repair






- Secure pulley for viscous fan with pin punch -1. and unfasten using Allen key -2-.
- Remove viscous fan from mounting.






- Remove engine cover -arrows-.
- Mark direction of rotation of belt with chalk or felt pen.
- Remove top and center toothed belt guard.






- Set crankshaft to markings for TDC of No. 1 cylinder by turning central bolt on crankshaft sprocket in direction of rotation -arrows-.






- Thread socket head fastener T10092 into tensioner for toothed belt.

Note: Only tension pressure piston of tensioner until the piston is secured with pin T40011.

- Take toothed belt off camshaft sprocket and coolant pump.

Note: The vibration damper and lower toothed belt guard do not have to be removed,
The toothed belt should be left in position on the crankshaft sprocket.
Before removing the coolant pump, cover toothed belt with a cloth to protect from coolant.






- Remove coolant pump securing bolts -1- and remove coolant pump -2-.

Installing

- Installation is carried out in the reverse order of removal.

Note: Always replace seals and gaskets.

- Clean and smooth down sealing surface for 0 ring as required.






- Lightly smear new O-ring -3- with coolant G 012 A8 D.
- Install coolant pump -2-.
- Installation position: Sealing plug in housing faces downward.

- Tighten bolts -1- of coolant pump to 15 Nm.
- Install toothed belt (adjust valve timing).

Note: Observe all instructions on removing and installing the toothed belt.

- Install ribbed belt and tensioner for ribbed belt. Refer to Drive Belts, Mounts and Accessories - Drive Belt - Service and Repair - Procedures
- Install viscous fan.
- Install lock carrier. Refer to Body and Frame - Radiator Support - Service and Repair - Procedures [1][2]Procedures
- Top up coolant.

Tightening torque

Tightening Torque (Part 1 Of 1):

1) Install with locking fluid D 000 600 A2