Geely JL481Q, Руководство пользователя

Страница: 56 / 198

b) Put the camshaft on cylinder head;
c) Place a plastic clearance gauge on each camshaft
journal (Fig. 101).
d) Install bearing cap;
Torque: 13N.m, pay attention not to rotate the camshaft.
e) Remove bearing cap, use plastic clearance gauge to
measure the clearance:
Standard oil clearance: 0.035-0.072mm;
Maximum oil clearance: 0.10mm
If the oil clearance is larger than the maximum value,
replace camshaft, replace the entire bearing cap and
cylinder head if necessary.
Standard height of cam peach-tip refers to Table 1.
If the height of peach pit does not meet requirement, replace the
camshaft.
(3) Check camshaft diameter
Use micrometer to measure journal diameter (Fig. 98).
Journal diameter:
NO.1 Exhaust: 24.949-24.965mm
Other: 22.949-22.965mm
If journal diameter does not meet requirement, check oil clearance.
(4) Check camshaft bearing
Check whether the bearing has shellingout and ablation; if the
bearing is damaged, replace the entire set of bearing cap and
cylinder head (Fig. 99).
Fig. 100 Check free distance of camshaft gear spring
Fig. 101 Check oil clearance on camshaft
Free distance
Fig. 98 Measure journal diameter of camshaft
Fig. 99 Check damage of camshaft bearing
(5) Check camshaft gear spring
Use vernier caliper to measure free distance at both ends of spring (Fig. 100).
Free distance: 17.02-17.10mm. If free distance does not meet stipulation, replace gear spring.
(6) Check oil clearance on camshaft journal
a) Clean bearing cap and camshaft;
Plastic clearance gauge
52