Procedure for Engine Cooling Fan Circuit Gear
Pump Flow Test
2
4
1.
perature by operating the machine for approximately 10
minutes. Make sure the hydraulic tank is full.
Make sure hydraulic oil is at normal operating tem-
1
2.
Parkmachineonalevelsurfacewiththecuttingdeck
lowered and off. Make sure engine is off and the parking
brake is applied.
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
Figure 45
1.
2.
Gear pump
Fan drive manifold
3.
4.
Engine cooling hose
90o fitting
IMPORTANT: Make sure that the oil flow indicator
arrow on the flow gauge is showing that the oil will
flow from the pump section, through the tester and
into the hydraulic hose.
3.
Withtheengineoffandcuttingdecklowered,discon-
nect the hydraulic hose from the 90o fitting in the last
gear pump section which supplies the engine cooling
circuit (Fig. 43).
4.
connected hose. Make sure the tester flow control valve
is OPEN.
Install tester in series between the fitting and the dis-
IMPORTANT: The pump is a positive displacement
type. If pump flow is completely restricted or
stopped, damage to the pump, tester or other com-
ponents could occur.
5.
RPM). DO NOT engage the cutting deck.
Starttheengineandmovethrottletofullspeed(2870
6.
flow control valve until 1000 PSI (69 bar) is obtained on
While watching tester pressure gauges, slowly close
pressure gauge. Verify engine speed continues to be
2870
RPM.
GAUGE READING TO BE: Flow approximately 7
GPM (26.3 LPM) at 1000 PSI (69 bar).
7.
8.
tained or flow is lower than 6 GPM (22.3 LPM) (85% of
expected flow), check for restriction in pump intake line.
If intake line is not restricted, consider that gear pump is
worn or damaged.
Stop engine and record test results.
If a pressure of 1000 PSI (69 bar) could not be ob-
9.
When testing is complete, remove tester and recon-
nect hose to pump fitting.
Groundsmaster 4100--D
Page 4 -- 59
Hydraulic System
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| Document Type | Service Manual |
| Language | English |
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At only 700mm wide the Mini Dumper is even at home on tight access
sites. No need to grunt, groan, and force the
mower about the yard. The US will be getting a revised 2011 Jeep Wrangler but the diesel option will not be offered in the United States.