Service Manual
Rev. C
Reelmaster 5200-D/5400-D Hydraulic SystemPage 4 - 29
TEST NO. 4: Relief Valve (R2) Pressure
1. Make sure hydraulic oil is at normal operating tem-
perature by operating the machine for approximately 10
minutes.
2. Make sure machine is parked on a level surface with
the cutting units 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. Set reel speed controls (FC1 and FC2) to full open
(highest number). Make sure backlap switch is OFF.
4. Disconnect pressure hose from hydraulic fitting on
left--rear (No. 2) reel motor (Fig. 20).
IMPORTANT: Make sure that the oil flow indicator
arrow on the flow gauge is showing that the oil will
flow from the pump, through the tester and into the
reel motor.
5. Install tester with pressure gauges and flow meter in
series with the hose and hydraulic fitting on reel motor.
Make sure the flow control valve on tester is fully
open.
6. Start engine and move throttle to full speed (3200
RPM).
WARNING
Keep away from reels during test to prevent per-
sonal injury f rom rotating reel blades.
7. Have another person occupy seat, move ”Enable/
Disable” switch to ENABLE. Move ”Lower -- Mow/Raise”
lever forward to engage cutting units, then monitor the
tester pressure gauge.
8. Watch pressure gauge carefully while slowly closing
the tester flow control valve to fully closed.
9. System pressure should be from 1950 to 2050 PSI
as the relief valve (R2) lifts.
10.Open the tester flow control valve, disengage cutting
units and stop the engine.
11. If pressure is too high, remove cap on relief v alve R2
and adjust screw to get correct pressure (see Adjust
Manifold Relief Valves). If pressure is too low, check for
restriction in pump intake line. If intake line is not re-
stricted, remove cap from relief valve R2 and adjust
screw to get correct pressure. If pressure is still too low,
pump or motor should be suspected of wear, damage or
inefficiency.
12.Disconnect tester from reel motor fitting and hose.
Reconnect hydraulic hose to reel motor fitting.
1. Left rear (No. 2) motor 2. Pressure hose
Figure 20
1
2
Hydraulic
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