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Oil pump
Oil pump 1 - the bearing surface (replace if necessary);
2 - O-rings (replace);
3 - a cover of the oil pump;
4 - a flange of the oil pump;
5 - the inner rotor; | 6 - outer rotor;
7 - washer (replace);
8 - a spring;
9 - bypass the pressure valve;
10 - the cover of the oil pump;
11 - a stopper |
Dismantling | PERFORMANCE ORDER | | 1. Remove the bearing surface. | | 2. Remove the four O-rings. |  | 3. In the sequence shown in the figure, equally, in several passes, loosen and remove the bolts. Remove the cover of the oil pump from the oil pump housing. |  | 4. Note the relative position of the outer and inner rotors and remove them from the oil pump housing. | | 5. Remove the stopper and remove the washer, the spring and the pressure valve. |
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Check | PERFORMANCE ORDER | | 1. Install the outer rotor and the inner rotor. | | 2. Measure the clearance between the casing of the oil pump and the inner and outer rotors, at least four places along their circumference. Gap
Nominal backlash: 0,02-0,04 mm
Maximum permissible backlash: 0,05 mm | | 3. If the clearance is not correct, replace the oil pump assembly. | | 4. Measure the clearance between the projection and the oil pump inner rotor, at least four places, and calculates the average value. Inner diameter
Rated: 0,04-0,115 mm
Limits: 0.125 mm | | 5. If the clearance is not correct, replace the oil pump assembly. | 6. Check the dimensions of the spring in the free state.
External diameter: 11.8 mm
Length: 53.0 mm
The number of turns: 12.0
The diameter of the spring wire: 1.2 mm |  | 7. If the dimensions of the spring is not correct, replace the oil pump assembly. |  | 8. Measure the outside diameter of the pressure valve. Nominal diameter: 14,00 mm
Maximum allowable diameter: 13.98 mm | 9. If the diameter is less than the limit, replace the oil pump assembly. |
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Assembly | PERFORMANCE ORDER | | 1. Install a bypass valve and a pressure spring in a casing of the oil pump and check that the valve moves freely without jamming. |  | 2. Install a new washer and the plug. Torque: 32-47 N ??? m | | | 3. Combine the labels put before removal, and install the outer and inner rotors. | | 4. Install the oil pump flange. | | 5. Replace the cover of the oil pump housing. | | | 6. Gradually, in a certain sequence tighten six bolts securing the cover. The inhaling moment: 8,1-10,9 N ??? m | | 7. Install the oil pump shaft and rotating the rotor of the pump, check the pump. |  | 8. Replace the four O-rings. |  | 9. Apply a layer of petroleum jelly on the surface of the bearing and place it on the cover of the oil pump. The outer diameter of the bearing surface: 88.0 mm |
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