Kubota WSM F2880 User Manual

7-S4
F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM
HYDRAULIC SYSTEM
4. CHECKING, DISASSEMBLING AND SERVICING
[1] CHECKING AND ADJUSTING
(1) Hydraulic Pump and Flow Priority Valve
Flowmeter Connecting and Test Preparation
IMPORTANT
■
• When using a flowmeter other than KUBOTA specified
flowmeter (Code No. 07916-52791), be sure to use the
instructions with that flowmeter.
• In this hook-up, there is no relief valve.
Therefore while testing, do not close the flowmeter loading
valve completely.
1. Disconnect the delivery hose (4), and install the plug to the flow
priority valve body (EF port).
2. Install the adaptor 51 to the flow priority valve body (PF port).
3. Connect the hydraulic test hose (Code No. 07916-52651) to the
flowmeter (Code No. 07916-52791) inlet port.
4. Connect the another hydraulic test hose to flowmeter outlet port
and transmission oil filling port, firmly.
5. Open the flowmeter loading valve completely. (Turn
counterclockwise).
W1017826
Hydraulic Pump Test
NOTE
■
• Before pump testing, perform the “Flowmeter Connecting
and Test Preparation”. (See page 7-S4.)
1. Remove the plug (1), and pull out the spool (3) and spring (2).
2. Open the loading valve completely.
3. Start the engine and set at approx. 2700 min-1 (rpm).
4. Read and note the pump delivery at no pressure.
5. Slowly close the loading valve to increase pressure approx. 9.8
MPa (100 kgf/cm
2
, 1422 psi).
6. Read and note the pump delivery at rated pressure.
7. Open the loading valve and stop the engine.
8. If the pump delivery does not reach the allowable limit, check the
pump suction line, oil filter or hydraulic pump.
(Condition)
• Engine speed ..... Approx. 2700 min
-1
(rpm)
• Rated pressure ..... 9.8 MPa (100 kgf/cm
2
, 1422 psi)
W1010923
(1) Delivery Hose (EF Port)
(2) Flow Priority Valve Body
(3) Hydraulic Pump
(4) Delivery Hose (PF Port)
Hydraulic pump delivery
at no pressure
(Oil temperature at 50
°C (122 °F))
Factory spec.
29.0 L/min.
Above 7.6 U.S.GPM
6.3 Imp.GPM
Hydraulic pump delivery
at rated pressure
(Oil temperature at 50
°C (122 °F))
Factory spec.
24.0 L/min.
Above 6.3 U.S.GPM
5.2 Imp.GPM
Allowable limit
21.0 L/min.
5.5 U.S.GPM
4.6 Imp.GPM
(1) Plug
(2) Spring
(3) Spool
(4) Flow Priority Valve Body
KiSC issued 04, 2006 A

Kubota WSM F2880 Specifications

General

Brand	Kubota
Model	WSM F2880
Category	Lawn Mower
Language	English