QUANCHAI N485D, Руководство по обслуживанию

Страница: 44 / 139

ANHUI QUANCHAI ENGINE CO., LTD
Adjust the valve clearance with a feeler gauge,
open end wrench (10 mm), and slotted
screwdriver.
The working order of the four-cylinder engine is
1-3-4-2, and the adjustment sequence is double -
exhaust - double - intake.
How to find the top dead center of Cylinder 1 is
shown below:
There is an pointer on the crankshaft pulley and
the gear chamber. Align the pointer to see if the
Cylinder 1 moves. If one valve moves slightly, it
is the top dead center of the exhaust valve, if the
two valves do not move, it is the compression top
dead center. At this point, adjust the valve. Adjust
them in the order of 1-3-4-2, and double - exhaust
- double - intake.
That is, adjust the intake and exhaust valves of
Cylinder 1.
Adjust the exhaust valve of Cylinder 3.
Adjust the intake and exhaust valves of Cylinder
4.
Adjust the intake valve of Cylinder 2.
When the adjustment is completed, rotate the
flywheel one turn, then adjust the intake valve of
Cylinder 3 and the exhaust valve of Cylinder 2.
Specifications:
Intake valve (cold): 0.30 mm
Exhaust valve (cold): 0.35 mm
A - Adjusting screw
B - Adjusting nut