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Groundsmaster 4100--D
Hydraulic System
Page 4 -- 31
Procedure for Cutting Deck Gear Pump Flow Test
NOTE:
Over a period of time, the gears and wear plates
in the gear pump can wear. A worn pump will by--pass
oil and make the pump less efficient. Eventually, enough
oil loss will occur to cause the cutting deck motors to stall
under heavy cutting conditions. Continued operation
with a worn, inefficient pump can generate excessive
heat and cause damage to the seals and other compo-
nents in the hydraulic system.
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.
2. Park machine on a level surface with the cutting
decks lowered and off. Make sure engine is off and the
parking brake is engaged.
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. Locate deck manifold for gear pump section to be
tested. Disconnect hydraulic hose at deck manifold port
(P1) (Fig. 25).
4. Install tester with pressure gauges and flow meter in
series with the the disconnected hose and hydraulic
manifold port (P1).
5.
Make sure the flow control valve on the tester is
fully open.
6. After installing tester, start engine and run at idle
speed. Check for hydraulic leakage and correct before
proceeding with test.
IMPORTANT: Do not run engine at full speed during
testing. At full engine speed, cutting deck gear
pump output can exceed 15 GPM and cause tester
damage.
7. Using a phototac, adjust engine speed to
2400 RPM
.
Do not engage the cutting decks
.
IMPORTANT: Do not fully restrict oil flow through
tester. In this test, the flow tester is positioned be-
fore the relief valve. Pump damage can occur if the
oil flow is fully restricted.
8. Watch pressure gauge carefully while slowly closing
the flow control valve until
2000 PSI
is obtained. Verify
with a phototac that the
engine speed
is
2400 RPM
.
9. For a normal pump, gear pump flow should be
approximately
14 GPM
. Shut off engine. Record test re-
sults.
10.If measured flow is
less than 12 GPM
or if a pressure
of
2000 PSI
cannot be obtained, check for restriction in
the pump intake line. If line is not restricted, remove gear
pump and repair or replace as necessary.
11.Disconnect flow tester from hydraulic hose and man-
ifold port. Reconnect hose to the manifold.
12.Repeat test for second pump section if required.
1. Center deck manifold
2. Hyd. hose to front P1
3. Wing deck manifold
4. Hyd. hose to side P1
Figure 25
FRONT
RIGHT
1
4
2
3
TO OIL COOLER
Hydraulic System
Содержание 30411
Страница 1: ...Form No 03116SL Rev G Groundsmaster 4100 D Model 30411 Original Instructions EN...
Страница 4: ...NOTES _...
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Страница 197: ...Groundsmaster 4100 D Page 6 7 Axles Planetaries and Brakes This page is intentionally blank Axles Planetaries and Brakes...
Страница 226: ...Groundsmaster 4100 D Page 7 8 Chassis This page is intentionally blank...
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Страница 250: ...Page 9 4 Glow Plug Circuit Power Current Control Current Indication Current Logic Direction Groundsmaster 4100 D...
Страница 251: ...Page 9 5 Crank Circuit Power Current Control Current Indication Current Logic Direction Groundsmaster 4100 D...
Страница 252: ...Page 9 6 Run Transport Circuit Power Current Control Current Indication Current Logic Direction Groundsmaster 4100 D...
Страница 255: ...Page 9 9 Groundsmaster 4100 D Main Wire Harness...
Страница 257: ...Page 9 11 Groundsmaster 4100 D Engine Wire Harness D4 D2 D6...
Страница 259: ...Page 9 13 Groundsmaster 4100 D Front Wire Harness D7 D8 D5...
Страница 261: ...Page 9 15 Groundsmaster 4100 D Cutting Deck Wire Harnesses...
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