HYDRAULICS
8O-60
Rear Reel Valve Test
Section two or mid-section of the reel (auxiliary)
hydraulic pump supplies hydraulic flow to the rear reel
valve.
1. Shut down engine and remove ignition key.
2. Connect the flow meter to the reel (auxiliary)
hydraulic pump section two. Connect the flow
meter IN port to the section two-pressure fitting
and the flow meter OUT port to the section two
pressure hose (Figure 8O-10).
3. Set parking brake, start engine, and advance
engine speed to full throttle.
4. Record pump section two no load flow
indication (e).
5. Slowly close tester load valve until 1000 psi (6894
kPa) is indicated on the pressure gauge. Record
flow indication (f).
6. Subtract flow indication (f) from flow indication (e).
The result is section two pump leakage.
Conclusion
• If leakage is less that ½ gpm (1.9 lpm), pump is not
at fault.
• If leakage is ½ to 1 gpm (1.9 to 3.8 lpm), pump and/
or reel valve circuit relief is marginal.
• If leakage is 1 gpm (3.8 lpm) pump and/or reel valve
circuit relief may be faulty.
7. Shut down the engine and remove the ignition
key.
8. Remove test equipment and connect hose to
pump.
Figure 8O-10. Rear Reel Pump Test
Load
Valve
In
Out
Pump Section
Two Outlet
Hose
Pump Section
Two Outlet
Fitting
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