Komatsu PC500LC-10R, Shop Manual, Page: 439 / 758

Remove the testing tools and restore the machine after the test
is finished.
Install the injector, injector wiring harness, and fuel high-pres-
sure tube according to the following procedure.
1.
Install the O-rings (8), (9), and gasket (10) to injector (5).
2.
Fit the holder (11) to injector (5) to temporarily assemble
them as a unit to the cylinder head.
3.
Fit spherical washer (13) to mounting bolt (12) and tighten
them to the cylinder head.
2
Spherical part of washer:
Engine oil (SAE30DH)
3
Mounting bolt:
58.8 to 73.5 Nm {6.0 to 7.5 kgm}
4.
Insert the harness (14) into the rocker arm housing, and fix it with the mounting bolt (15).
5.
Insert the wiring harness (14) into holder (16).
6.
Alternately tighten 2 nuts at the end of wiring harness (14) to injector (5).
3
Nut:
2.0 to 2.4 Nm {0.2 to 0.24 kgm}
7.
Tighten the tube (17) to injector (5).
3
Sleeve nut:
39.2 to 49.0 Nm {4 to 5 kgm}
8.
Tighten the clamping bolt of the fuel piping.
3
Clamp bolt:
11.8 to 14.7 Nm {1.2 to 1.5 kgm}
3
Rocker arm assembly mounting bolt:
58.8 to 73.5 Nm {6.0 to 7.5 kgm}
9.
Adjust the valve clearance by referring to the “TEST AND ADJUST VALVE CLEARANCE”.
3
Cylinder head cover mounting bolt:
9.8±1 Nm {1.0±0.1 kgm}
30 TESTING AND ADJUSTING TEST COMPRESSION PRESSURE
PC500LC-10R 30-33