Procedure for Gear Pump (P2) Test:
Make sure hydraulic oil is at normal operating tem-
2
1.
perature by operating the machine for approximately 10
minutes.
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.
1
3.
Read Precautions for Hydraulic Testing.
WARNING
RIGHT
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.
FRONT
Figure 20
2.
1.
Gear pump
To steering control valve
4.
Disconnect hose connection on the reel gear pump
leading to the steering control valve.
5.
Install tester in series with reel drive pump and the
disconnected hose leading to the steering control valve.
6.
Make sure the flow control valve on the tester is fully
open.
IMPORTANT: In this test, the flow tester is posi-
tioned before the relief valve. Pump damage can oc-
cur if the oil flow is fully restricted. Do not close
tester valve fully when performing test.
7.
50
Start engine and move throttle to full speed (2650 +
RPM). Do not engage the cutting units.
8.
Watch pressure gauge carefully while slowly closing
the flow control valve until 800 PSI is obtained. Verify
with a phototac that the pump speed is 3100 RPM.
9.
Flow indication should be 3.6 GPM minimum.
10.Shut
off engine.
NOTE: If necessary, Steering and Lift Relief Pressure
Test can be conducted with tester as placed for this test.
11.
If flow was less than 3.6 GPM or a pressure of 800
PSI cannot be obtained, check for restriction in the pump
intake line. If line is not restricted, remove pump and re-
pair or replace as necessary.
12.Disconnect
tester from gear pump fitting and hose.
Reconnect hose to the pump.
Reelmaster 3100−D
Hydraulic System (Rev. C)
Page 4 − 37
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