Komatsu PC200-8M0 Shop Manual page 974

SEN06143-00
2) Replace relief valve (3), if necessary,
according to the following procedure.
1] Before removing the relief valve,
remove dirt around the valve thor-
oughly.
2] Remove the relief valve.
3] If the leakage through the relief valve
exceeds the specified value, do not
reuse the relief valve.
4] Check that there is no damage on
high-pressure sealing surfaces (A) on
the relief valve and common rail.
5] Install the relief valve.
2
Threaded portion of relief valve:
3
Relief valve:
100 ± 4 Nm {10.2 ± 0.4 kgm}
Take care not to tighten exces-
sively. Excessive tightening can
cause leakage.
6] Start the engine and check that there
is no leakage.
For the testing procedure, see Testing
and adjusting, "Checking fuel system
for leakage".
12
50-200
Removal and installation of fuel injector assembly
Gear oil (#90)
200 Engine and cooling system
PC200, 200LC, 220, 220LC-8M0