1. To measure the axial clearance in the pump, place a steel ruler on the pump housing and measure the clearance with a feeler gauge, as shown in illustration. The gap should be 0.10–0.20 mm. If it is outside the specified limits, replace the pump cover.
2. Pump side clearance is measured in a different way. Insert the probe as shown in illustration. between gears. If the clearance is greater than 0.01–0.20 mm, the pump must be replaced.
3. In the case of using oversize pump shafts, a distribution mechanism drive housing is sometimes installed, in which the gears or shafts are bored out to an increased oversize. This is important when replacing gears/shafts. For this reason, it is necessary to check whether there is a 0.2 marking in the place shown in fig. The marking indicates the increased repair size.
4. Before installation, the pump cover is lubricated with sealant. Tighten the bolts evenly around the circumference. Before installing the pump, unscrew the plug and fill the pump with oil to prevent it from running dry during the first start-up. After that, screw the plug back in.
Oil pump seal
1. If leaks are visible from the front side of the engine, then in most cases they are the result of a violation of the tightness of the crankshaft oil seals. The seal can be replaced without removing the engine, as described above. For a 2.0 liter engine and a DOHC engine, the oil seal is located in the oil pump housing, for a 2.4 liter engine it is in the distribution drive housing cover.
To remove the oil seal, punch a small hole in it with a sharp mandrel, screw a self-tapping screw into it (or two self-tapping screws lying opposite each other) and pull out the seal with pliers.
Lubricate the lip and outer surface of the new seal and press it into the pump housing using a pipe supported by the outer contour.
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