Testing Intake Air Pressure (Boost Pressure) - Komatsu PC200-8M0 Shop Manual

101 Testing and adjusting, Part 1

Testing intake air pressure (boost pressure)

Testing intake air pressure (boost
pressure)
a Measuring tools for intake air pressure (boost
pressure)
Symbol Part No.
R 799-201-2202
k
Stop the machine on a level ground and
lower the work equipment to the ground.
a Measure the intake air pressure under the fol-
lowing condition.
Engine coolant temperature: Within oper-
q
ating range
q Hydraulic oil temperature: Within operat-
ing range
1. Open the engine hood and remove intake air
pressure pickup plug (1) from the intake air
connector.
2. Install nipple [1] of boost gauge kit R and con-
nect it to gauge [2].
PC200, 200LC, 220, 220LC-8M0
Part name
Boost gauge kit
3. Run the engine at middle or higher speed and
bleed oil from the hose.
1
a Install the connecting parts of the gauge
and hose approximately a half and open
the self-seal on the hose side repeatedly,
and the oil will be drained.
a If Pm kit (A) is available, you use the air-
bleeding coupling (790-261-1130) in that
kit.
a If oil is left in the hose, the gauge does not
work. Accordingly, be sure to drain the oil.
4. Set the working mode in the power mode (P)
and turn the swing lock switch ON.
a If the swing lock switch is turned ON, the
main relief valve is set for high-pressure
relief.
5. While running the engine with full throttle,
relieve the arm circuit and measure the intake
air pressure.
6. After finishing measurement, remove the mea-
suring tools and return the removed parts.
SEN06127-00
9
30-101