Service Manual

Pro SweepHydraulic System Page 3 -- 6

Relieving Hydraulic System Pressure

CAUTION

Before disconnecting any hydraulic compo-

nents, operate all sweeper hydraulic controls to

relieve system pressure and avoid injury from

pressurized hydraulic oil.

Before disconnecting or performing any work on the Pro

Sweep hydraulic system, all pressure in the hydraulic

system must be relieved. Position sweeper on a level

surfacewith dumphopper empty andfully lowered.Turn

tow vehicle key switch to OFF and allow engine to stop.

Make sure that the sweeper has electrical power and

that sweeper control module is energized (control mod-

ule Time Out and Power LED’s are both illuminated).

Withthetowvehicleenginenotrunning,pressallremote

transmitter buttons to energize the solenoids on the hy-

draulic control manifold. After all functions have been

energized,make suretow vehiclekey switch isOFF and

key is removed from ignition switch.

Securing Pro Sweep to Tow Vehicle

While servicing the Pro Sweep, make sure that the hitch

pin is properly positioned in tow vehicle hitch and

sweeper tongue (Fig. 8). Hitch pin should be secured

with hairpin clip.

1. Hitch pin 2. Hairpin clip

Figure 8