Charging the Hydraulic System
IMPORTANT
Air must be purged from the hydraulic system to reduce the chance
of component damage.
When initially starting the hydraulic system with new or rebuilt components such
as wheel motors, pumps, or cylinders, it is important that the hydraulic system
is charged properly to remove air from the system.
IMPORTANT
Flush the hydraulic system whenever there is a severe component
failure or the system is contaminated; refer to
.
1. Park the machine on a level surface and set the key switch to the O
FF
position.
2. Ensure that all of the hydraulic connections are secured tightly.
3. Ensure that the hydraulic tank is full. Add the correct quantity and type of
hydraulic fluid if necessary; refer to the traction unit
Operator’s Manual
.
4. If the traction (piston) or gear pump was replaced or repaired, prime the
hydraulic pumps; refer to
Priming the Hydraulic Pumps (page 5–60)
.
WARNING
Review and follow the
Jacking Instructions (page 1–6)
before lifting
the machine.
5. Raise the front wheels of 2WD machines, or all of the wheels for 4WD
machines off the floor and support the machine with jack stands.
6. Make sure the traction pedal is in neutral., then start the engine and let it idle
at low speed. The hydraulic pumps should pick up hydraulic fluid and fill
the hydraulic system. If there is no indication of the system filling within 30
seconds, stop the engine and determine the cause.
IMPORTANT
Check hydraulic tank fluid level frequently while charging the system
and add fluid if necessary.
7. After the hydraulic system starts to show the signs of fill, operate the deck lift
switch until the lift cylinders move in and out several times.
8. If the cylinders do not move after 15 seconds or the pump emits abnormal
sounds:
A. Immediately set the key switch to the O
F
f position.
B. Make sure the hydraulic fluid filter or the suction line is not loose.
C. Check for incorrect hose routing.
D. Ensure that the suction line is not blocked.
E. Make sure the charge relief valve (R3) is not damaged or blocked open.
Hydraulic System: Service and Repairs
Page 5–62
Groundsmaster
®
3200, 3300 and 3310
19240SL Rev A
Summary of Contents for Groundmaster 31900
Page 4: ...Reader Comments Page 4 Groundsmaster 3200 3300 and 3310 19240SL Rev A...
Page 16: ...Safety Safety and Instructional Decals Page 1 8 Groundsmaster 3200 3300 and 3310 19240SL Rev A...
Page 86: ...Engine Service and Repairs Page 4 24 Groundsmaster 3200 3300 and 3310 19240SL Rev A...
Page 332: ...Operator Cab Service and Repairs Page 9 18 Groundsmaster 3200 3300 and 3310 19240SL Rev A...
Page 355: ......
