Komatsu PC200-8M0 Shop Manual page 373

101 Testing and adjusting, Part 1
Testing fuel pressure
2) Connect fuel hose (1) to supply pump (3)
by tool F4 instead of joint bolt (2).
a When installing tool F4, fit the gaskets to
both sides of the fuel hose joint.
3
Tool F4:
19.6 to 29.4 Nm {2.0 to 3.0 kgm}
3) Connect tool F4 to tool F5.
4) Run the engine and measure the circuit
negative pressure at high idle.
Circuit standard negative pressure:
Max. –50.7 kPa {–380 mmHg}
5) If the negative pressure is higher than the
standard pressure, the fuel prefilter may
be clogged. In this case, replace the fuel
prefilter and measure again.
6) After finishing measurement, remove the
measuring instruments and return the
removed parts.
3
Joint bolt (2):
19.6 to 29.4 Nm {2.0 to 3.0 kgm}
PC200, 200LC, 220, 220LC-8M0
SEN06127-00
21
30-101