MULTIQUIP MAYCO LS300GK Operation Manual page 56

1. After removing the dust cap, cotter pin, spindle nut and
spindle washer, remove the hub to inspect the bearings
for wear and damage.
2. Replace bearings that have flat spots on rollers, broken
roller cages, rust, or pitting. Always replace bearings
and cups in sets. The inner and outer bearings are to
be replaced at the same time.
3. Replace seals that have nicks, tears or wear.
4. Lubricate the bearings with a high-quality EP-2
automotive wheel bearing grease.
WHEEL HUB ADJUSTMENT
Every time the wheel hub is removed and the bearings are
reassembled, follow the steps below to check the wheel
bearings for free running and adjust.
1. Turn the hub slowly, by hand, while tightening the
spindle nut until you can no longer turn the hub by hand.
2. Loosen the spindle nut just until you are able to turn
it (the spindle nut) by hand. Do not turn the hub while
the spindle nut is loose.
3. Install a new cotter pin through the spindle nut and axle.
4. Check the adjustments. Both the hub and the spindle
nut should be able to move freely (the spindle nut
motion will be limited by the cotter pin).
DANGER
NEVER crawl under the trailer unless it is on firm, level
ground and resting on properly placed and secured
jack stands.
The possibility exists of the trailer falling thus causing
equipment damage and severe bodily harm even death!
DANGER
When performing trailer inspection and maintenance
activities, you must jack up the trailer using jacks and
jack stands.
When jacking and using jack stands, place them so
as to clear wiring, brake lines, and suspension parts
(e.g. springs, torsion bars). Place jacks and jack stands
inside of the perimeter strip on the supporting structure
to which the axles are attached.
PAGE 56 — MAYCO LS300GK CONCRETE PUMP • OPERATION MANUAL — REV. #1 (10/14/22)
TRAILER MAINTENANCE
DANGER
Improper weld repair will lead to early failure of the
trailer structure and can cause serious injury or death.
DO NOT repair cracked or broken welds unless you
have a certified welder perform the repair. If not, have
the welds repaired by your dealer.
WARNING
If the trailer is involved in an accident, have it inspected
immediately by qualified personnel. In addition, the
trailer should be inspected annually for signs of wear
or deformations.
TORSION SUSPENSION
The mounting bracket and associated components
(Figure 60) should be visually inspected every
6,000 miles for signs of excessive wear, elongation
of bolt holes, and loosening of fasteners. Replace all
damaged parts immediately.
5/8"-18 X 2"
MOUNTING
MOUNTING
BRACKET
SPINDLE
TORSION
ARM
TORSION
BAR
Figure 60. Torsion Suspension Components
DANGER
Worn or broken suspension parts can cause loss of
control, damage to equipment and severe bodily injury
or even death!
Check the suspension regularly.
BOLT
AXLE
TUBE
5/8"-18
NYLOC NUT
GRADE C