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Pro Sweep Hydraulic SystemPage 3 -- 37
Removal (Fig. 24)
1. Position sweeper on a level surface with dump hop-
per empty and fully lowered. Chock sweeper wheels to
prevent sweeper from moving. If sweeper is attached to
tow vehicle, apply tow vehicle parking brake, stop en-
gine and remove key from the ignition switch.
CAUTION
Before disconnecting any hydraulic compo -
nents, operate all sweeper hydraulic controls to
relieve system pressure and avoid injury from
pressurized hydraulic oil. See Relieving Hydrau-
lic System Pressure in the General Information
section of this chapter.
2. Relieve sweeper hydraulic system pressure.
3. To prevent contamination of hydraulic system during
offset cylinder removal, thoroughly clean exterior of cyl-
inder and fittings.
NOTE: Toeaseinstallation,label the hydraulic hosesto
show their correct position on the offset cylinder.
4. Remove hydraulic hoses from offset cylinder.Locate
and discard O--rings from between hoses and fittings.
Allow hoses to drain into a suitable container.
5. Plug disconnected hoses and offset cylinder fittings
to prevent contamination.
6. Remove flange nuts (item 5)and cap screws (item 4)
that are used to retain offset cylinder pivot pins (item 3)
to sweeper frame.
7. Support offset cylinder and slide pivot pins from the
cylinder and machine frame.
8. Remove offset cylinder from the machine.
9. If hydraulic fittings are to be removed from offset cyl-
inder, mark fitting orientation to allow correct assembly.
Remove fittings from cylinder and discard O--rings.
Installation (Fig. 24)
1. If fittings were removedfromoffset cylinder,lubricate
and place new O--rings onto fittings. Install fittings into
port openings using marks made during the removal
process to properly orientate fittings. Tighten fittings
(see Hydraulic Fitting Installation in the General Infor-
mation section of this chapter).
2. Position offset cylinder to the machine mounting
points. Make sure theportsof the offsetcylinder face the
hitch tongue.
3. Align offset cylinder mounting holes with frame
mounts. Install pivot pins and secure with cap screws
and flange nuts.
4. Remove plugs from disconnected hoses and cylin-
der fittings.
5. Connect hydraulic hoses with new O--rings to hy-
draulic fittings on offset cylinder. Tighten hose connec-
tions (see Hydraulic Hose and Tube Installation in the
General Information section of this chapter).
6. Lubricate grease fittings on offset cylinder.
Hydraulic
System