4.
With ignition switch in the ON position (engine not
7. Shut engine off.
After adjustments have been made and all fasteners
are tightened, make sure that traction rod does not con-
tact anything through both forward and reverse direc-
tions.
running), use Diagnostic Display to make sure that neu-
tral switch is closed when traction pedal is released to
theneutraldetentposition(seeDiagnosticDisplayinthe
Troubleshooting section of Chapter 5 -- Electrical Sys-
tem).
8.
9.
Lower machine to ground.
Adjustments with Engine Running
CAUTION
1
5
Allwheelswillbeoffthegroundandrotatingdur-
ing the following procedure. Make sure machine
is supported so it will not move and accidentally
fall to prevent injuring anyone near the machine.
3
1.
ground (see Jacking Instructions in Chapter 1 -- Safety).
Raise and support machine so all wheels are off the
4
2.
Start engine and make sure that Hi/Low switch is in
the Low (4WD) position. Depress traction pedal to allow
oilflowthroughthetraction circuit.Allowallwheels toro-
tate to warm up the hydraulic oil.
2
Figure 56
3.
The traction pedal should contact the pedal stop
when fully depressed. At this point, the piston pump
should be at full stroke.
1.
2.
3.
Pedal stop height
Traction pump end
Rod end dimension
4.
5.
Traction lever end
Neutral adjustment
4.
When traction pedal is released from either forward
or reverse, pedal should return to the neutral position
and wheels should stop rotating. If necessary, adjust
spring shaft (item 5 in Fig. 56) until neutral operation is
correct.
1
3
5.
With the engine running, the transport cylinder on
engine should extend when Hi/Low speed switch is
moved to the Hi speed (2WD) position. This cylinder ex-
tension prevents the piston (traction) pump swash plate
from reaching full stroke when in Hi speed (2WD). Also,
the traction pedal should not contact the pedal stop
when fully depressed in Hi speed (2WD).
2
4
6.
Adjust the transport cylinder as follows (Fig. 57):
A. PlaceHi/LowspeedswitchintheHispeed(2WD)
position.
Figure 57
B. Lock one front wheel by applying the wheel
brake.
1.
2.
Transport cylinder
Pump control arm
3.
4.
Cap screw
Jam nut
C. Use a phototac to measure the other front wheel
speed. When the traction pedal is fully depressed to
forward, the wheel speed should be from 370 to 422
RPM.
D. If wheel speed is incorrect, adjust cap screw in
transport cylinder to provide correct wheel speed.
Make sure that jam nut is tightened after any adjust-
ment.
Groundsmaster 4000--D/4010--D
Page 4 -- 71
Hydraulic System
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