Textron Jacobsen Super LF 1880 Fairway Mower with ROPS, Инструкции по обслуживанию и ремонту

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HYDRAULICS
8O-56
REEL MOTOR TEST
The reel motors can be tested at the reel motor control
valves. There are two reel motor control valves. One
valve controls the front reels while the other controls
the center reels. The test for each valve is identical.
1. Shut down the engine and remove the ignition
key.
2. Install a 3000 psi (2067 bar) pressure gauge with
a quick connect fitting to the quick connect fitting
on the reel motor control valve (Figure 8O-6).
3. Remove the pressure hoses from the reel motor.
Plug the hoses and cap the motor ports
(Figure 8O-6).
4. Set the parking brake and start the engine.
5. Place the reel motors in the forward (ON) position.
6. While watching the pressure gauge, advance the
engine speed to full throttle.
7. The relief valve should open at approximately
3000 psi (2067 bar).
Conclusion
• If the relief valve opens within range, the relief valve
and reel (auxiliary) hydraulic pump are not at fault. A
reel motor may be at fault. Remove the plugs and
connect the hoses to the reel motors one at a time
and repeat steps 4 through 7.
• If the relief valve does not open within range,
replace the relief valve.
• If the relief valve does not develop pressure within
range, perform a flow test on the reel (auxiliary)
hydraulic pump.
8. Shut down the engine, remove the gauge, place
the dust boot on the quick connect fitting.
9. Remove plugs from the reel motor hoses and
caps from the reel motors. Connect the hydraulic
hoses to the reel motor fittings.
10.If necessary, repeat the test on the other reel con-
trol valve.
Figure 8O-6. Reel Motor Control Valve Testing
CAUTION
The plugs inserted into the reel motor hoses must be
able to withstand the maximum pressure developed
by the reel motor system.
CAUTION
Do not allow the system to develop more that 3500
psi (2411 bar) hydraulic pressure.
Quick
Connect
Fitting
0 to 5000 psi
(0 to 34473 kPa)