Service Manual

ProPass 200 Page 3 -- 29 Hydraulic System
Disassembly (Fig. 26)
1. Position machine on a levelsurface.IfProPassisat-
tached to tow vehicle, apply tow vehicle parking brake,
stop engine and remove key from the ignition switch.
Chock wheels to prevent ProPass machine from mov-
ing.
2. Remove hydraulic guard from machine to allow ac-
cess to hydraulic controls (Fig. 27).
CAUTION
Before disconnecting any hydraulic compo-
nents, operate all hydraulic controls to relieve
system pressure and avoid injury from pressur-
ized hydraulic oil. See Relieving Hydraulic Sys-
tem Pressure in the General Information section
of this chapter.
3. Relieve hydraulic system pressure.
4. Before removing any control system components,
thoroughly clean all hydraulic connections. For assem-
bly purposes, label hydraulic and electrical connections
at components that are to be removed.
5. Remove control system components as needed us-
ing Figure 26 as a guide. Allow hydraulic oil to drain from
disconnected hydraulic lines into a suitable container.
Put caps or plugs on open hydraulic lines and fittings to
prevent contamination.
Assembly (Fig. 26)
1. Install all removed control system components using
Figure 26 as a guide.
A. If fittings were removed, lubricate and place new
O--rings onto fittings. Install and properly tighten fit-
tings into component openings (see Hydraulic Fitting
Installation in the General Information section of this
chapter).
B. Lubricate and position new O--rings to fittings.
Use labels placed during the removal process to
properly install hydraulic lines to fittings (see Hydrau-
lic Hose and Tube Installation in the General Infor-
mation section of this chapter).
C. Make sure that wire harness connectors are se-
cured to solenoid coils.
2. Install hydraulic guard to machine (Fig. 27).
Figure 27
1. Hydraulic guard
2. Screw (2 used)
3. Flange nut (4 used)
4. Cap screw (2 used)
5. Flat washer (2 used)
1
2
3
4
5
3
Figure 28
1. Supply hose (45
o
)
2. Floor control valve
3. Return hose (90
o
)
4. Option control valve
3
1
2
4
Hydraulic
System