wsm STW37 Workshop Manual page 400

STW34, STW37, STW40, WSM
Pump Test
NOTE
• Before pump testing, perform the flowmeter connecting
and test preparation.
1. Open the loading valve completely.
2. Start the engine and set at approx. 2700 min
3. Read and note the pump delivery at no pressure.
4. Slowly close the loading valve to increase pressure approx.
11.2 MPa (114 kgf/cm
5. Read and note the pump flow at rated pressure.
6. Open the loading valve and stop the engine.
(Reference)
Hydraulic pump delivery
Factory specification
at no pressure
Factory specification
Hydraulic pump delivery
at rated pressure
Allowable limit
Condition
• Engine speed:
-1
Approx. 2700 min (rpm)
• Rated pressure:
0.7 to 11.7 MPa (109.1 to 119.3 kgf/cm
• Oil temperature:
40 to 60 °C (104 to 140 °F)
8-S7
HYDRAULIC SYSTEM
-1
(rpm).
2
, 1624 psi).
18.6 L/min.
4.91 U.S.gals/min.
4.09 Imp.gals/min.
18.2 L/min.
4.81 U.S.gals/min.
4.00 Imp.gals/min.
15.2 L/min.
4.02 U.S.gals/min.
3.34 Imp.gals/min.
2
, 1552 to 1697 psi)
9Y1211109HYS0005US0
KiSC issued 11, 2014 A