Operation Manual

BX25, RCK54{P)-23BX, RCK60B-23BX, LA240, BT601, WSM
HYDRAULIC SYSTEM
(2) Pump and Priority Valve
Checking Hydraulic Oil Flow
• IMPORTANT
• Use the instruction with the flowmeter when you use the
flowmeter.
• While testing, do not close the flowmeter loading valve
completely.
• NOTE
• To measure the flow volume
of pump, oil flow on the power
steering system side should be stopped.
1. Remove the pump hose.
2. Remove the hydraulic pipe behind the hydraulic cylinder and fix
the flow meter hose and the flow meter as shown
in the photo.
• Measure the flow volume of power steering.
1. Make sure that the flow volume of pump is 10 L (2.6 U.S.gals, 2.2
Imp.gals) or higher and verify the content below.
If the flow volume is insufficient, measure it after replacing the
pump as its priority-valve is unreadable
of its condition.
2. After measuring the flow volume, remove the flow meter then
reassembling the hydraulic pipe to the originated position.
3. Remove the transmission fluid fitting plug, then fix the flow meter
hose and the flowmeter.
4. Check that a flow volume meets the specifications when the
engine revolution
is 1500 min-
1
(rpm).
5. If the flow volume varies from the speCification, replace the
priority valve then take measurement again.
Condition
• Engine speed: 1500 min-
1
(rpm)
• Oil temperature : 45 to
55°C
113t0131°F
Above 8.0Umin.
Power steering oil flow
. Factory spec.
2.1 U.S.gals/min .
1.8
Imp.gals/min.
(Reference)
• Pump Oil Flow
Hydraulic pump delivery
at no pressure
Factory spec.
Above 24.9 Umin.
6.6 U.S.gals/min.
5.5Imp.gals/min.
Condition
• Engine speed: Maximum
• Oil temperature: 45 to
55°C
113t0131°F
(1) Pump Hose
(A) Pump Oil Flow
(8) Power Steering Oil Flow
W89746512
5-S5