Geely JL481Q, Manual

Page: 141 / 198

7. Remove the engine oil strainer (Fig. 301).
Remove the two bolts, the two nuts, the strainer and the gasket.
8. Remove the oil pump
(1) Remove the seven bolts (See Fig. 302)
(2) Use a hammer with plastic-face overlays to gently strike the pump
body and remove the oil pump (See Fig. 303).
(3) Remove the gasket.
Examination:
1. Examine the pressure relief valve
Smear engine oil onto the pressure relief valve, and check whether it
can easily fall into the valve hole by force of its weight (See Fig. 304).
If not so, you shall replace the pressure relief valve. If necessary, you
shall replace the oil pump’s compo.
2. Examine the driving and driven rotors
(1) Examine the clearance between the driven rotor and the case body by using a thickness feeler gauge (See Fig. 305).
The standard clearance between the driven rotor and the case body ranges from 0.100mm to 0.180mm; the maximum
allowable clearance between them is 0.20mm. If the real clearance exceeds the maximum valve, you shall replace the
whole set of rotors. If necessary, you shall also replace the oil pump compo.
(2) Examine the clearance between the two rotors
Use a feeler gauge to measure the clearance between the top of driving rotor and the driven rotor (See Fig. 306).
The standard clearance between them ranges from 0.060mm to 0.180mm, while the maximum clearance between them is
0.35mm. If the real clearance between them exceeds the maximum value, you shall replace the whole set of rotors.
Fig. 306 Examine the clearance between
the driving rotor and the driven rotor
Fig. 307 Examine the side clearance of the
oil pump rotor
Fig. 303 Remove the oil pump
Fig. 304 Examine the pressure relief valve Fig. 305 Clearance between the driven rotor and the case body
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