Geely JL481Q, Руководство пользователя

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Fig. 107 Measure the outer diameter of cylinder head bolt
III. Replacement of Valve Guide
Fig. 106 Check planeness of junction surface of
intake and exhaust manifold
Fig. 109 After cylinder head is heated, use
special servicing tool to knock valve guide out
Fig. 110 Use inside micrometer to measure pore
diameter of valve guide on cylinder head
Intake
Exhaust
Fig. 108 Heat cylinder head to remove valve guide
Max. oil clearance of intake valve: 0.058mm.
Max. oil clearance of exhaust valve: 0.058mm.
If the clearance is larger than the above maximum value,
replace valve and valve guide. Operating procedure is:
1. Heat cylinder head gradually to 80-100
o
C (Fig. 108).
2. Use special servicing tool and hammer to slightly knock the
valve guide out (Fig. 109).
3. Use inside micrometer to measure pore diameter of guide
installed on cylinder head (Fig. 110)
Pore diameter of standard valve guide (cold state): 11.000-
11.018mm.
4. Select new valve guide of( standard value or 0.05mm
larger).If pore diameter of guide installed on cylinder head is
larger than 11.018mm, machine this pore to the following dimen-
sion: 11.050mm.
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