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Reelmaster 3100−D Hydraulic System (Rev. C)
Page 4 − 39
Procedure for Wheel Motor Efficiency
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.
2. Park machine on a level surface with the cutting units
lowered and off. Make sure engine is off and the parking
brake is engaged.
3. Read Precautions for Hydraulic Testing.
4. Make sure that traction pedal is adjusted to the neu-
tral position (see Adjust Traction Drive for Neutral in the
Adjustments Section).
5. Attach a heavy chain to the rear of the machine frame
and an immovable object to prevent the machine from
moving during testing.
The rear wheel will be off the ground during front
wheel motor testing. Make sure machine is sup-
ported so it will not move and accidentally fall to
prevent injuring anyone under machine.
WARNING
6. Block up the rear wheel off the ground to allow flow
through the traction circuit.
7. Chock front wheel being tested to prevent rotation of
the wheel. Make sure parking brake is on.
WARNING
Before disconnecting or performing any work
on the hydraulic system, all pressure in the
system must be relieved. See Relieving Hy-
draulic System Pressure in the General Infor-
mation section.
8. Disconnect hydraulic lines from front wheel motor
that is not being tested. Cap disconnected hydraulic
lines and plug ports in motor to prevent contamination.
9. Disconnect hose from the lower hydraulic fitting on
the bottom of the hydrostat (Fig. 22).
NOTE: An alternate testing location would be at the hy-
draulic hose connection to the hydraulic tube under the
left floor plate.
10.Install flow tester in series with the pump and the dis-
connected hose. Make sure the tester flow control valve
is fully open.
11.Start engine and move throttle to full speed (2650 +
50 RPM).
1. Lower hydraulic fitting 2. Piston pump
Figure 22
1
2
CAUTION
Use extreme caution when performing test. The
front tire on the ground will be trying to move the
machine forward.
12.Slowly push traction pedal in forward direction until
1000 PSI is displayed on the pressure gauge.
13.Motor internal leakage will be shown on flow meter
in GPM. Flow should be less than 1.5 GPM for the
tested wheel motor.
14.If specifications are not met, the tested wheel motor
needs to be repaired or replaced as necessary.
15.If remaining front wheel motor requires testing, com-
plete steps 5 to 14 for the remaining motor.
16.If rear wheel motor requires testing:
A. Both front wheel motors should have hydraulic
lines connected. Block up both front wheels off the
ground. Release parking brake so front wheels can
turn.
B. Attach a heavy chain to the rear of the machine
frame and an immovable object to prevent the ma-
chine from moving during testing.
C. Position rear wheel on the ground and chock rear
wheel to prevent it from turning.
D. Complete steps 9 to 13.
E. If specifications are not met, check the relief valve
in the rear wheel motor for damage. If relief valve is
not damaged, wheel motor needs to be repaired or
replaced.
17.Disconnect tester from hydraulic fitting and hose.
Reconnect hose to pump connection.
Hydraulic
System