Service Manual

Reelmaster 5200-D/5400-DHydraulic System Page 4 - 30

TEST NO. 5: Gear Pump Section (P1 & P2) Flow

(Using Tester with Pressure and Flow Capabilities)

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.

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. With the engine off and cutting units lowered, install

tester in series between pressure hose and valve block

fitting for s uspected bad pump section (Fig. 21). Make

sure the tester flow c ontrol valve is OPEN.

Front circuit - port P1

Rear circuit - port P2

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

valve block.

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.

4. Make sure the parking brake is engaged. Start the

engine and move throttle to full speed (3200 RPM).DO

NOT engage the cutting units.

5. While watching pressure gauges, slowly close flow

control valve until 2000 PSI is obtained on gauge. Verify

pump speed at 3200 RPM at the transmission input

shaft from the engine.

TESTER READING: Flow not less than 5 GPM at 2000

PSI.

6. Stop the engine. If flow was lower than 5GPMor a

pressure of 2000 PSI cannot be obtained, check for re-

striction in pump intake line. If not restricted, remove

pump and repair or replace as necessary.

1. Port P1 2. Port P2

Figure 21