Belarus 1025/1025.2/1025.3
Section G. Scheduled maintenance
G 27
Maintenance No.2 (M-2) after each
500 hours of operation
Perform operations of the previous
maintenance and the following operations:
Operation 27. Checking clearance
between valves and rockers
Note:
Check clearances on cold diesel,
having in advance checked tightness of
cylinders’ head bolts
Observe the following sequence of
adjustment:
•
Take off caps of cylinders’ head covers
and check fastening of rockers’ axle
posts. Torque of nuts is 60.. 90 N
•
m
(6... 9 kgf
•
m).
•
Turn crankshaft through until timing
overlap in the first cylinder (inlet valve
starts opening, and the outlet valve
starts closing), and adjust clearances in
valves 4, 6, 7 and 8 (counting from the
fan).
•
To adjust clearance loosen check nut
(1), put probe (3) between end face of
valve rod (5) and rocker (4) pin, then
screwing in or out screw (2) set required
clearance by probe.
ATTENTION!
Value of clearance
between rocker pin and end face of valve
rod on cold diesel should be 0.25...0.30
mm for inlet valves, and 0.40...0.45 mm
for outlet valves.
•
Turn through crankshaft by 360°, having
set timing overlap in the fourth cylinder,
and adjust clearances in valves 1, 2, 3
and 5, as shown above.
•
after adjusting clearances, tighten check
nuts (1) and put removed parts in
place.
Summary of Contents for 1025 2008
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