Komatsu Galeo PC800-8 Shop Manual page 385

30 Testing and adjusting
5. Measuring leakage from travel motor
1) Remove the travel motor cover.
4
Travel motor cover: 130 kg
2) Start the engine and lock the travel mecha-
nism.
k Set pin [1] between the sprocket and
track frame to lock the travel mecha-
nism securely.
3) Disconnect drain hose (6) of the travel
motor and plug it.
a Use the following part to block the hose.
07376-70522 (Plug #05)
4) Run the engine at high idle and relieve the
travel circuit and measure the oil leakage.
k Since wrong operation of the levers can
cause an accident, make signs and
confirmation securely.
a Start measuring the oil leakage 30 sec-
onds after the travel motor circuit is re-
lieved and measure for 1 minute.
a Measure the oil leakage several times,
moving the motor little by little (changing
the positions of the valve plate and cylin-
der and those of the cylinder and piston).
5) After finishing measurement, return the
parts.
PC800, 850-8
6. Measuring leakage from center swivel joint
1) Put block [1] between the sprocket and
frame to lock the travel motor of the port to
be inspected, and then stop the engine.
k Loosen the oil filler cap of the hydraulic
tank slowly to release the internal pres-
sure of the tank.
2) Disconnect the hoses of the upper and
lower measurement ports of the inspection
port from the top of the swivel joint and
block them.
a Use the following parts to block the hos-
es.
• Ports A, B, C, and D: 07379-01044
(Flange #10)
• Port P: 07376-70315 (Plug #03)
• Port T: 07376-70522 (Plug #05)
3) Combination of inspection ports and meas-
urement ports
Inspection
port
A
B
P
C
D
T
• For the inspection ports, travel directions
and measurement ports, see the figure.
SEN00912-02
Travel Measurement
direction ports
Right reverse T and B
Right forward A and P
Change of
B and C
speed
Left reverse P and D
Left forward C and T
Drain
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