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Pro Sweep Page 5 -- 7 Chassis
Removal (Fig. 3)
1. Position sweeper on a level surface with dump hop-
per empty and lowered. Have sweeper attached to tow-
ing vehicle, apply vehicle parking brake, stop engine
and remove key from the ignition switch. Chock sweep-
er wheels to prevent sweeper from moving.
2. Jack or hoist sweeper from ground and support ma-
chine with jack stands (see Operator ’s Manual and
Jacking Instructions in Chapter 1 -- Safety).
3. Remove wheel assembly (see Wheel Removal in
this section).
4. Carefully pry dust cap from wheel hub.
5. Remove cotter pin from axle spindle.
6. Remove slotted hex nut and washer that secures
wheel hub to spindle. Slide wheel hub with bearings
from spindle.
7. Disassemble wheel hub:
A. Pull grease seal out of the wheel hub. Discard
seal.
B. Remove bearing cones from both sides of wheel
hub. Clean bearings in solvent. Clean inside of hub.
C. If necessary, remove bearing cups from hub us-
ing a hammer and punch. Take care to not damage
hub as bearing cups are removed.
D. Inspectwheelbearings. Checkthebearingcones
and bearing cups for wear, pitting or other damage.
Replace worn or damaged parts.
E. Ifnecessary,use a press to remove lug boltsfrom
hub.
Installation (Fig. 3)
1. Clean all parts thoroughly before reassembly.
2. Assemble wheel hub:
A. If bearing cups were removed from the wheel
hub, press inner and outer cups into the hub until
they seat against the hub shoulder.
B. If lug bolts were removed from hub, press new
bolts into hub. Make sure that head of bolt is fully to
hub surface.
C. Pack both bearing cones with grease. Install
greased inner bearing into the cup on inboard side of
the wheel hub.
D. Fill hub approximately 50% full of grease.
IMPORTANT: The grease seal must be pressed
in so it is flush with the end of the hub. The lip of
the seal must face the bearing.
E. Lubricate the inside of a new grease seal and
press it into the wheel hub.
3. Install the wheel hub onto the axle spindle taking
care to not damage grease seal in wheel hub.
4. Install greased outer bearing cone, washer and
slotted hex nut onto spindle shaft.
5. While rotating the wheel hub by hand, torque the
slotted hex nut from 75 to 180 in-lb (8.5 to 20.3 N--m)
to seatbearings. Loosennut untilit is away from washer
and hub has end play. Finally, while rotating hub,tighten
slotted hex nut from 15 to 20 in--lbs (1.7 to 2 .3 N--m).
6. Install cotter pin through axle spindle hole. Install
dust cap to hub.
WARNING
Failure to maintain proper lug nut torque could
result in failure or loss of wheel and may result in
personal injury.
7. Install wheel assembly(see Wheel Installation inthis
section).
8. Carefully lower machine to ground. Make sure that
lug nuts are torqued in a criss--cross pattern from 70 to
90 ft--lb (95 to 122 N--m).
Chassis