Takeuchi TB175W, Руководство по ремонту

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TROUBLESHOOTINTG
BOOM
V-23
TB175W
5. Inspect the boom cylinder.
Boom Cylinder internal Leakage Inspect (1)
a. With the bucket cylinder fully retracted and
with the rod of the arm cylinder a little ex-
tended from the fully retracted position, lower
the bucket front end to the ground.
b. Disconnect the rod side hose (A) only and let
the oil in the piping run out.
Insert a plug (1) in the disconnected hose.
• Test the left and right cylinders one at a
time. Remove both hoses from the cylinder
that is not being inspected at this time and
plug the disconnected hoses.
c. Retract the arm cylinder and lift the bucket so
it is floating above the ground.
At this time, if there is oil leaking from the
piping of the cylinder where the hose was
disconnected, and if the boom cylinder’s rod is
retracted, the cylinder is leaking internally.
Also, if there is no leakage of oil from the
cylinder’s piping, if the boom cylinder’s rod is
retracted, the control valve is leaking inter-
nally.
Boom Cylinder Internal Leakage Inspect (2)
a. Place the machine in the posture shown in the
figure.
L3E008
1
A
W1-E005
W1-E006
W1-E008