Groundsmaster 4000--D
Hydraulic System
Page 4 -- 35
Procedure for Traction Circuit Relief Pressure Test
1. Make sure hydraulic oil is at normal operating tem-
perature by operating the machine for approximately 10
minutes. Make sure the hydraulic tank is full.
Move machine to an open area, away from
people and obstructions.
CAUTION
2. Drive machine to an open area, lower cutting decks,
turn the engine off and apply the parking brake.
CAUTION
Prevent personal injury and/or damage to equip-
ment. Read all WARNINGS, CAUTIONS and Pre-
cautions for Hydraulic Testing at the beginning
of this section.
3. Connect a 10,000 PSI (700 bar) pressure gauge to
traction circuit test port for function to be checked (Fig.
22 or 23).
4. Start the engine and move throttle to full speed
(2870
RPM)
. Release parking brake. Make sure that trans-
port/4WD switch is in the transport position.
5. Sit on seat, apply brakes fully and slowly depress the
traction pedal in the appropriate direction. While
pushing traction pedal, look at pressure reading on
gauge:
GAUGE READING TO BE:
Forward:
3750 to 4250 PSI (259 bar to 293 bar)
Reverse:
4750 to 5250 PSI (328 to 362 bar)
6. Release traction pedal and stop engine. Record test
results.
7. If traction pressure is too low, inspect traction pump
relief valves (Fig. 24). Clean or replace valves as neces-
sary. These cartridge type valves are factory set, and
are not adjustable. If relief valves are in good condition,
traction pump or wheel motors should be suspected of
wear and inefficiency.
NOTE:
Seal leakage across pilot directional valves
PD1 and PD2 in 4WD manifold can also cause low for-
ward traction pressure with reverse pressure meeting
specifications.
8. When testing is completed, disconnect pressure
gauge from test port.
1. Forward traction port
2. Left front wheel
Figure 22
1
2
1. Reverse traction port
2. Right front wheel
Figure 23
1
2
1. Forward relief valve
2. Reverse relief valve
3. Traction pump
Figure 24
1
2
3
FRONT
RIGHT
Hydraulic System
Содержание Groundsmaster 4000-D
Страница 2: ...Groundsmaster 4000 D This page is intentionally blank ...
Страница 4: ...Groundsmaster 4000 D This page is intentionally blank ...
Страница 10: ...Groundsmaster 4000 D Page 1 6 Safety This page is intentionally blank ...
Страница 12: ...0 09375 Groundsmaster 4000 D Page 2 2 Product Records and Maintenance Equivalents and Conversions ...
Страница 34: ...Groundsmaster 4000 D Page 3 18 Kubota Diesel Engine This page is intentionally blank ...
Страница 43: ...Groundsmaster 4000 D Hydraulic System Page 4 9 This page is intentionally blank Hydraulic System ...
Страница 55: ...Groundsmaster 4000 D Hydraulic System Page 4 21 This page is intentionally blank Hydraulic System ...
Страница 107: ...Groundsmaster 4000 D Hydraulic System Page 4 73 This page is intentionally blank Hydraulic System ...
Страница 111: ...Groundsmaster 4000 D Hydraulic System Page 4 77 This page is intentionally blank Hydraulic System ...
Страница 117: ...Groundsmaster 4000 D Hydraulic System Page 4 83 This page is intentionally blank Hydraulic System ...
Страница 131: ...Groundsmaster 4000 D Hydraulic System Page 4 97 This page is intentionally blank Hydraulic System ...
Страница 145: ...Groundsmaster 4000 D Hydraulic System Page 4 111 This page is intentionally blank Hydraulic System ...
Страница 155: ...Groundsmaster 4000 D Hydraulic System Page 4 121 This page is intentionally blank Hydraulic System ...
Страница 161: ...Groundsmaster 4000 D Hydraulic System Page 4 127 This page is intentionally blank Hydraulic System ...
Страница 212: ...Groundsmaster 4000 D Page 5 38 Electrical System This page is intentionally blank ...
Страница 253: ...Groundsmaster 4000 D Page 7 11 Chassis This page is intentionally blank Chassis ...
Страница 264: ...Groundsmaster 4000 D Page 7 22 Chassis This page is intentionally blank ...
Страница 269: ...Groundsmaster 4000 D Cutting Decks Page 8 5 This page is intentionally blank Cutting Decks ...
Страница 282: ...Groundsmaster 4000 D Foldout Drawings Page 9 2 This page is intentionally blank ...
Страница 292: ...Page 9 12 Groundsmaster 4000 D Engine Wire Harness STARTER STARTER STARTER ...
Страница 294: ...Page 9 14 Groundsmaster 4000 D Front Wire Harness FLOW DIVIDER SOLENOID ...