Komatsu PC130-7, Руководство по ремонту

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20-140
PC130-7
TESTING AND ADJUSTING
3. Measuring oil leakage from bucket cylinder
1) Run the engine and raise the engine oil tem-
perature to 45 – 55°C, and then move the
bucket cylinder to the CURL stroke end and
stop the engine.
k
Release the residual pressure in the
piping on the bucket cylinder head side.
For details, see RELEASING RESID-
UAL PRESSURE IN HYDRAULIC CIR-
CUIT (Operate the lever in the arm
CURL direction only, however).
2) Disconnect hose (3) on the cylinder head
side and block the hose side with a plate.
k
Take care not to disconnect the hose on
the cylinder bottom side.
a
Use the following part to block the hose
side.
07376-50422 (Plug No. 04)
3) Run the engine at high idling and relieve the
bucket circuit by curling the bucket.
k
Take care not to "dump the bucket".
4) Measure the oil leakage for 1 minute after 30
seconds since relieving is started.
5) After finishing measurement, return the
removed parts.
4. Measuring oil leakage from swing motor
1) Run the engine and raise the engine oil tem-
perature to 45 – 55°C.
2) Disconnect drain hose (4) and block the
hose side with a plug.
a
Use the following part to block the hose
side.
07376-50522 (Plug No. 05)
3) Turn the swing lock switch ON.
4) Run the engine at high idling and relieve the
swing circuit by swinging.
a
Measure the oil leakage for 1 minute
a ft er 3 0 s ec o n d s s in c e re l ie v i n g i s
started.
a
After measuring 1 time, swing 180°, and
then measure again.
5) After finishing measurement, return the
removed parts.
MEASURING OIL LEAKAGE
(1)