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Test Procedure (continued)
CAUTION
Do not close tester valve fully when performing this test. In this
test, the hydraulic tester is positioned before the circuit relief valve.
Pump damage can occur if the fluid flow is completely restricted by
fully closing the tester flow control valve.
A. Monitor the tester pressure gauge carefully while slowly closing the flow
control valve until
5,516 kPa (800 psi)
is obtained on the tester pressure
gauge.
B. Record the tester pressure and flow readings under load.
14. Verify the steering and lift circuit relief valve (R4) operation as follows:
A. Open the tester flow control valve fully.
CAUTION
When performing the test, do not allow the tester pressure to
exceed 8300 kPa (1400 PSI).
IMPORTANT
Hold steering wheel at full lock and hold the lift/lower switch at
full raise only long enough to obtain a system pressure reading.
B. Open the circuit relief valve via the steering system. Watch the pressure
gauge on the tester and turn the steering wheel completely in one
direction. The circuit relief valve should open just after the rear wheel
gets to the full lock position. Record the pressure at which the relief valve
opens.
C. Open the circuit relief valve via the lift system. Watch the pressure gauge
on the tester and set the lift/lower switch to the L
IFT
position. Momentarily
hold the switch with the cutting unit fully raised causing the circuit relief
valve to open. Record the pressure at which the relief valve opens.
15. Move the throttle to low speed position and set the key switch to the O
FF
position.
16. The under load test flow reading (step
) should not drop more than 15%
when compared to the no load test flow reading (step
). A difference in
flow of more than 15% (Under Load > No Load X 0.85) may indicate:
A. A restriction in the pump inlet line.
B. The charge pump is worn and should be replaced or repaired; refer to
Gear Pump (P2) (page 5–75)
or
Gear Pump (P2) Service (page 5–78)
.
17. The circuit relief valve pressure should be
7000 to 7500 kPa (1015 to 1088
PSI)
. If the relief pressure can not be met or is greater than specified, the
steering control valve is damaged and should be replaced or repaired; refer
to
Steering Control Valve (page 5–95)
or
Steering Control Valve Service
(page 5–97)
.
18. After testing:
A. Remove the hydraulic hoses and tester.
Groundsmaster
®
3200, 3300 and 3310
Page 5–43
Hydraulic System: Testing the Hydraulic System
19240SL Rev A
Содержание Groundmaster 31900
Страница 4: ...Reader Comments Page 4 Groundsmaster 3200 3300 and 3310 19240SL Rev A...
Страница 16: ...Safety Safety and Instructional Decals Page 1 8 Groundsmaster 3200 3300 and 3310 19240SL Rev A...
Страница 36: ...Specifications and Maintenance Special Tools Page 2 20 Groundsmaster 3200 3300 and 3310 19240SL Rev A...
Страница 86: ...Engine Service and Repairs Page 4 24 Groundsmaster 3200 3300 and 3310 19240SL Rev A...
Страница 316: ...General Information Operator Cab General Information Page 9 2 Groundsmaster 3200 3300 and 3310 19240SL Rev A...
Страница 332: ...Operator Cab Service and Repairs Page 9 18 Groundsmaster 3200 3300 and 3310 19240SL Rev A...
Страница 335: ...Model 31900 Drawing 133 6540 Rev A Sheet 1 of 1 19240SL Rev A Page A 3 Hydraulic Schematic 3200 2WD g296996...
Страница 336: ...Page A 4 19240SL Rev A Model 31901 Drawing 138 4500 Rev A Sheet 1 of 1 Hydraulic Schematic 3200 4WD g303916...
Страница 339: ...Model 31902 and 31903 Drawing 122 1220 Rev A Sheet 1 of 2 19240SL Rev A Page A 7 Electrical Schematic 3300 3310 g296989...
Страница 347: ...Model 31903 and 31909 Drawing 122 1435 Rev A Sheet 1 of 1 19240SL Rev A Page A 15 Wire Harness Cab Power g297520...
Страница 348: ...Page A 16 19240SL Rev A Model 31903 and 31909 Drawing 122 1245 Rev D Sheet 1 of 1 Wire Harness Cab Rooftop g256477...
Страница 349: ...Model 31903 and 31909 Drawing 122 1660 Rev A Sheet 1 of 1 19240SL Rev A Page A 17 Wire Harness Cab Control Panel g297533...
Страница 350: ...Page A 18 19240SL Rev A Model 31903 and 31909 Drawing 122 1678 Rev A Sheet 1 of 1 Wire harness Cab HVAC Adapter g297534...
Страница 351: ...Model 31993 Drawing 122 1248 Rev B Sheet 1 of 1 19240SL Rev A Page A 19 Wire Harness Cab Work Light Kit optional g260313...
Страница 355: ......