13
8.
Reinstall brush retaining plate.
9.
Reinstall bearing housing, hydraulic motor mount and
guard.
Broom Lift Chain Tension
Note:
Whenever brush elements are replaced or castor
height adjusted the lift chain must be adjusted to apply
proper downward brush pressure
With castors adjusted for 2” – 4” brush flat spot on ground
(Fig. 4) adjust lift chain so, in transport lift position, the
brush is raised approximately 1 – 2” off ground with
castors still on ground. Chain should not lift castors off of
ground. (Fig. 5)
Changing Hydraulic System Oil
And Filter
The hydraulic system filter must be changed initially, after
the first 5 hours of operation, and thereafter every 200
hours of operation or yearly, whichever comes first. Use a
suitable oil filter for replacement. The hydraulic oil must be
changed every 200 hours of operation or yearly, whichever
comes first. To change oil:
1.
Park machine on a level surface, raise broom and turn
the engine off.
2.
Place drain pan under drain plug in underside of tank.
Remove drain plug. Remove reservoir cap.
3.
Clean the area around the hydraulic oil filter. Remove
filter from the bottom of the filter head and allow the oil
to flow into a drain pan. Dispose of oil and filter
properly.
4.
Apply a film of oil on the filter gasket. Install filter by
hand until gasket contacts filter head, then tighten filter
an additional three–fourths turn.
5.
Lower broom to ground.
Note:
Do not fill past 1/4 way up on sight glass.
6.
Add 7 gallons of hydraulic oil to the reservoir (refer to
Check Hydraulic System). Run brush for 1 minute, then
add 3 additional gallons of oil or until level shows 1/4
way up on sight glass.
7.
Check all connections for leaks.
Servicing Castor Fork
Bushings
After many hours of operation, the bushings pressed into
the top and bottom of the frame bracket will wear. To check
the bushings, move castor fork fore and aft and from side to
side. If castor spindle is loose in the bushings, bushings are
worn and must be replaced.
1.
Start traction unit and raise broom to highest possible
position and turn off engine. Block up broom frame so
it cannot accidentally fall.
2.
Remove cap and thrust washers from top of castor
spindle.
3.
Pull castor spindle out of bracket. Allow thrust washers
to remain on bottom of spindle.
4.
Insert pin punch into top or bottom of bracket and drive
bushing out of tube. Also, drive other bushing out of
bracket. Clean inside of bracket to remove any dirt.
1
2
2
Figure 7
1. Bracket
2. Bushing
5.
Apply grease to inside and outside of new bushings.
Using a hammer and flat plate, drive bushings into
bracket.
6.
Inspect castor shaft for wear and replace if damaged.
7.
Push castor shaft through bushings in bracket. Slide
spacers onto shaft and secure with cap.
Summary of Contents for 30743
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