Chery A15. Manual — part 17

OIL PUMP AND FRONT OIL SEAL

Disassembly:

——To unscrew and take out six M6X30 hexagon

flange bolts.

——To take out oil pump and front oil seal assembly.

——To use a screwdriver or chisel to take out the

crankshaft front oil seal and pay attention not to
touch or damage the front oil seal.

——To take out 7 M6 bolts (as indicated by the

arrows in the figure).

——To demount the oil pump cover plate.

D-6

——To take out the internal and external rotors.

——To check out the clearance between the pump

external rotor and pump body. The oil pump
external rotor shall have a clearance of
0.06-0.19mm with oil pump body.

——To check out the radial clearance between oil

pump internal rotor and external rotor. The
clearance between internal and external rotors
shall be 0.05-0.18mm.

D-7

——To check out the rotor end clearance.

The rotor end clearance shall be 0.014-0.100mm.

——To unscrew and take out the horizontal internal

hexagon bolts (small ones).

——To take out relive vale spring and relief valve

ball.

——To check out the spring load and free length.

The free length is 46mm;

The spring load is 32.8N±2N at 29mm;

The installation length of relief valve spring is
38.5mm.

——Bad relief vale spring, if any, has to be changed.

D-8

Assembly:

——To place external and internal rotors into the oil

pump body, making sure the installation marks
on the external and internal rotors are upward.

——To place the oil pump cover plate onto the oil

pump, screw up the 7 bolts to 7-10N.m.

——To install the relief valve and relief spring into

the oil pump hole.

——To screw the bolt into the oil pump body to

20-25N.m.

——To use oil to adhibit the new oil pump gasket to

the front end of the cylinder body.

——To mount the oil pump to the front end of the

crankshaft, pointing to the internal hole of the
internal rotors.

——To screw up the six installation nuts manually.

——To check out and adjust evenness between the oil

pump bottom and cylinder oil pan flange to the
range of ±0.26mm.

— — To screw tightly the oil pump set bolts to

8-11N.m.

— — To spread engine lubrication oil on the

crankshaft oil seal journal.

——To cover the crankshaft oil seal journal with a

thin plastic strip to prevent damages to crankshaft
oil seal edge.

— — To spread engine lubrication oil onto the

crankshaft oil seal edge and use appropriate
sleeve and crank belt wheel and belt wheel to
screw tightly the bolts and washers to press the
oil seal in place.

D-9