9-030
INSPECTION AND ADJUSTMENT
20. MEASUREMENT OF HYDRAULIC PUMP CASE
PRESSURE (SW504)
20-1. Measurement of Propulsion Pump Case Pressure
Oil temperature during measurement : 50 ± 5°C (122 ± 9°F)
①
Disconnect hose (1) from propulsion pump. Attach
pressure gauge through adapter
ⓠ
.
Adapter
ⓠ
: G3/4
Pressure gauge : 0 to 5 MPa (0 to 725 psi)
②
Conrm that F-R lever is “N”.
③
Apply parking brake by pressing parking brake switch
button.
④
Set propulsion speed change switch to “
”.
⑤
Start the engine and set throttle lever to “Full”.
⑥
Establish a condition in which machine propulsion load
becomes maximum.
(Pressure does not build up unless propulsion load is
applied.)
⑦
With propulsion load at maximum, m
easure pressure
when speed change switch is “ ” and “ ” and
F-R lever is “N”, “F”, and “R”, respectively.
Allowable pump case pressure
: 0.25 MPa (36.3 psi) or less
•
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SW504
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