3-101
Inspection and Adjustment
2. Inspection and Adjustment
2-1.
Measurement and adjustment of pressure in propulsion main circuit
1. Measurement
・
Hydraulic oil temperature: 50
±
5 °C
Park the machine on level ground. Stop
the engine. Block the wheels.
Make certain that the parking brake func-
tions correctly.
1)Remove plugs (1) and (2) from the gauge
ports of propulsion pump. Fit a pressure
gauge with adapter q.
・
Gauge port: 9/16-18UNF-2B
・
Forward travel gauge port: (1)
・
Reverse travel gauge port: (2)
・
Pressure gauge: 0-49.0 MPa
(0-500 kgf/cm
2
)
2) Apply the parking brake by pressing the
parking brake switch button. Set the speed
selector switch to the HIGH speed range
().
3) Start the engine and move the F-R lever
slowly in either direction forward or back-
ward as required until the engine reaches
its rated speed. Then take the pressure
gauge reading at the rated speed.
★ When the measurement is complete, return
the F-R lever to the neutral position immedi-
ately.
2. Adjustment
* If the measured value falls outside the
permissible range, disassemble and wash
clean or renew the pressure relief valve
assembly.
★
The valve is of a non-adjustable type. Do
not try to adjust it.
Carefully perform disassembly and
reassembly to prevent engress of foreign
matter
.
To Next Page
Loading...
