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Reelmaster 5010 Series Hydraulic System (Rev. C)Page 4 -- 43
CAUTION
Before openinghydraulic system, operateall hy-
draulic controls to relieve system pressure and
avoid injury from pressurized hydraulic oil. See
Relieving HydraulicSystemPressure inthe Gen-
eral Information section of this chapter.
4. Raise and prop operator seat to allow access to hy-
draulic pump.
5. Identify suspected bad pump section to be tested
(Fig. 40). Thoroughly clean junction of gear pump fitting
and hydraulic outlet hose. Disconnect hose from pump
fitting:
Pump section (P1) for front cutting units
Pump section (P2) for rear cutting units
IMPORTANT: Make sure that the oil flow indicator
arrow on the flow gauge is showing that the oil will
flowfrom thegearpump, throughthetester andinto
the hose.
6. Install tester with pressure gauges and flow meter in
series between disconnected hose and gear pump fit-
ting.Make surethe flowcontrol valveontester isful-
ly open.
7. After installing tester, start engine and run at idle
speed. Check for any hydraulic leakage from test con-
nections and correct before proceeding with test.
8. Make sure the parking brake is engaged. Move
throttle to full speed (3200 RPM). DO NOT engage the
cutting units. Use a tachometer to verify that engine
speed is correct.
IMPORTANT: The gear pump is a positive displace-
ment type. If pump flow is completely restricted or
stopped, damage to the pump, tester or other com-
ponents could occur.
9. While watching pressure gauges, slowly close the
tester flow control valve until 2000 PSI (138 bar) is ob-
tained on gauge.
FLOW TESTER READING TO BE:
For RM5210 and 5410 machines, a pump in good
condition should have a flow of approximately 6.4
GPM (24.2 LPM) at 2000 PSI (138 bar).
For RM5510 and 5610 machines, a pump in good
condition should have a flow of approximately 8.4
GPM (31.8 LPM) at 2000 PSI (138 bar).
10.Open the tester flow control valve and stop the en-
gine. Record test results.
11.If flow is less than 5.4 GPM (20.6 LPM) on a
RM5210/5410machine,lessthan7.1GPM(27LPM)on
a RM5510/5610 machine or a pressure of 2000 PSI
(138 bar) cannot be obtained, consider that a pump
problemexists. Checkfor restrictioninpump intakeline.
If intake is not restricted, remove gear pump and repair
or replace pump as necessary (see Gear Pump and
Gear Pump Service in the Service and Repairs section
of this chapter).
12.After testing is completed, make sure that engine is
stopped, then relieve hydraulic system pressure (See
Relieving Hydraulic System Pressure in the General In-
formation section of this chapter). Remove tester from
machine and connect hydraulic hose to gear pump fit-
ting.
1. Gear pump
2. Pump P1 outlet (front)
3. Pump P2 outlet (rear)
Figure 40
1
3
2
Hydraulic
System