Komatsu PC200-8M0 Shop Manual page 972

SEN06143-00
2. Crosshead and rocker arm
1) Install the crosshead and rocker arm.
a Since the hole shapes at parts "a"
and "b" of each crosshead are differ-
ent, install them to their respective
intake and exhaust valves in the origi-
nal directions.
a Check that the spherical portion of
adjustment screw (18) is fitted prop-
erly in the socket of the push rod, and
then tighten the mounting bolt.
3
Rocker arm mounting bolt:
2) Adjust the valve clearance. For details, see
Testing and adjusting, "Adjusting valve
clearance".
3
Lock nut (17):
20 to 28 Nm {2.04 to 2.86 kgm}
10
50-200
36 ± 5 Nm {3.7 ± 0.5 kgm}
200 Engine and cooling system
Removal and installation of fuel injector assembly
Perform the subsequent installation in the
q
reverse order to removal.
[*1]
3
Head cover mounting bolt:
[*2]
3
Fuel injector wiring harness nut:
1.5 ± 0.25 Nm {0.15 ± 0.025 kgm}
a Check the wiring harness that does not
interfere with the rocker arm.
[*3]
k
Install each high-pressure pipe and wiring
harness at least 10 mm apart from each other.
[*4]
q High-pressure pipe
k
Do not bend the fuel high-pressure pipe to
collect before installing.
k
Be sure to use the Komatsu genuine high-
p r e s s u r e p i p e c l a m ps a n d o b s e r v e t h e
specified tightening torque.
a Before installing the high-pressure pipe, check
it for the following. If the high-pressure pipe
has any defect, replace it with a new one since
fuel may leak.
q Check that the taper seal part (part "a": area of
2 mm from end) of the joint portion is free of
visible lengthwise slit "b" and dent "c".
q Check that part "d" (end of taper seal part: part
at 2 mm from end) is free of stepped wear
(fatigue) felt with a fingernail.
PC200, 200LC, 220, 220LC-8M0
24 ± 4 Nm {2.4 ± 0.4 kgm}