Komatsu PC130-7, Руководство по ремонту

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20-144
PC130-7
TESTING AND ADJUSTING
3. Bleeding air from cylinder
a
If a cylinder was replaced, bleed air from it
before connecting the work equipment. In
particular, the boom cylinder does not move
to the lowering stroke end, if it is installed to
the work equipment.
1) Run the engine at low idling for about 5 min-
utes.
2) Running the engine at low idling, raise and
lower the boom 4 – 5 times.
a
Stop the piston rod about 100 mm before
each stroke end. Do not relieve the oil.
3) Running the engine at high idling, perform
step 2).
4) Running the engine at low idling, move the
piston rod to the stroke end and relieve the
oil.
5) Bleed air from the arm cylinder and bucket
cylinder according to steps 2) – 4).
4. Bleeding air from swing motor
1) Run the engine at low idling.
2) Loosen air bleeding plug (3) and check that
the oil oozes out, and then tighten the air
bleeding plug.
3
Air bleeding plug:
25.5 – 34.3 Nm {2.5 – 3.5 kgm}
3) If the oil does not oozes out, remove air
bleeding plug (3) and fill the pump case with
oil.
4) Run the engine at low idling and swing slowly
2 turns or more in each direction.
5. Bleeding air from travel motor
1) Remove the travel motor cover and run the
engine at low idling.
2) Loosen drain hose (4) and check that oil
oozes out, and then tighten the drain hose.
3) Running the engine at low idling and using
the work equipment, raise the track shoe on
either side.
4) Running the engine at low idling, run the
raised track shoe idle slowly for about 2 min-
utes.
a
Run the track shoe forward and in
reverse as evenly as possible.
a
Run the track shoe on the opposite side
idle similarly.
BLEEDING AIR FROM EACH PART
(1)