Coolant pump

Longitudinal section of the coolant pump

Pressing the impeller onto the pump shaft with tool A.60430

Disassembly

1. Disconnect the pump body from the cover 2 (see fig. Longitudinal section of the coolant pump).



2. Fix the cover in a vice using gaskets and remove the impeller 2 from the shaft with a puller A.40026 (1 - puller А.40026).




3. Remove the hub 2 of the fan pulley from the roller using a puller А.40005/1/5 (1 - pump housing cover, 3 - puller А.40005/1/5).

4. Loosen lock screw 9 (see fig. Longitudinal section of the coolant pump) and remove the bearing with the pump shaft.

5. Remove gland 11 from housing cover 2.

Control

1. Check the axial clearance in the bearing. This operation must be done if significant pump noise is noted. The gap should not exceed 0.13 mm at a load of 49 N (5 kgf). If the clearance is large, replace the bearing.

2. It is recommended to replace the pump seal and the gasket between the pump and the cylinder block during repairs.

3. Inspect the pump housing and cover. Deformations or cracks on them are not allowed.

Assembly

1. Install the gland with a mandrel, avoiding distortion, into the housing cover.

2. Press the bearing with the shaft into the cover so that the seat of the lock screw coincides with the hole in the pump housing cover.

3. Tighten the bearing set screw and caulk the contours of the socket so that the screw does not loosen.

4. Press on with tool A.60430 (see fig. Pressing the impeller onto the pump shaft with tool A.60430) on the roller hub of the pulley, withstanding the size of 84.4±0.1 mm.

5. Press the impeller onto the roller using tool A.60430, ensuring a gap between the impeller blades and the pump housing of 0.9–1.3 mm.

6. Assemble the pump housing with the cover, placing a gasket between them.