Kubota L2800 Workshop Manual page 335

L2800, L3400, WSM
Tractor Manuals Scotland
Hydraulic Flow Test
IMPORTANT
• When using a flowmeter other than KUBOTA specified
flowmeter, be sure to use the instructions with that
flowmeter.
• Do not close the flowmeter loading valve completely, before
testing, because it has no relief valve.
1. Install the pump adaptor (see page G-51) with O-ring to the pump
discharge port.
2. Connect the hydraulic test hose to the adaptor and flowmeter
inlet port.
3. Connect the other hydraulic test hose to the flowmeter outlet port
and to transmission fluid filling plug hole.
4. Open the flowmeter loading valve completely.
counterclockwises.)
5. Start the engine and set the engine speed at 2000 to 2200 min
(rpm).
6. Slowly close the loading valve to generate pressure approx. 14.7
MPa (150 kgf/cm
temperature reached approx. 40 °C (104 °F)
7. Open the loading valve completely.
8. Set the engine speed. (Refer to Condition.)
9. Read and note the pump delivery at no pressure.
10.Slowly close the loading valve to increase pressure (Rated
pressure).
therefore, reset the engine speed.
11.Read and note the pump delivery at rated pressure.
12.Open the loading valve completely and stop the engine.
13.If the pump delivery does not reach the allowable limit, check the
pump suction line, oil filter or hydraulic pump.
Condition
• Engine speed : Approx.2800 min
• Rated pressure : 15.7 to 16.2 MPa
• Oil temperature : 40 to 60 °C (104 to 140 °F)
[L2800]
Hydraulic pump delivery
at no pressure
Hydraulic pump delivery
at rated pressure
[L3400]
Hydraulic pump delivery
at no pressure
Hydraulic pump delivery
at rated pressure
Tractor Manuals Scotland - Please Do Not Copy
8-S10
2
, 2133 psi). Hold in this condition until oil
As the load is increased, engine speed drops,
-1
(rpm) (L2808)
-1
Approx.2700 min (rpm) (L3408)
2
160 to 165 kgf/cm
2276 to 2347 psi
Factory spec.
Factory spec.
Allowable limit
Factory spec.
Factory spec.
Allowable limit
HYDRAULIC SYSTEM
(Turn
-1
Above 26.6 L/min.
7.03 U.S.gals/min.
5.85 Imp.gals/min.
Above 24.7 L/min.
6.53 U.S.gals/min.
5.43 Imp.gals/min.
22.2 L/min.
5.86 U.S.gals/min.
4.88 Imp.gals/min.
Above 25.7 L/min.
6.79 U.S.gals/min.
5.65 Imp.gals/min.
Above 23.9 L/min.
6.31 U.S.gals/min.
5.26 Imp.gals/min.
21.5 L/min.
5.68 U.S.gals/min.
4.73 Imp.gals/min.
W1014546
KiSC issued 08, 2007 A