Multiquip MQ62TDD - Manual (Page 31)

MQ62TDD TRASH PUMP • OPERATION AND PARTS MANUAL — REV. #0 (07/30/09) — PAGE 31
Adjustable Channel
Your trailer may be equipped with an adjustable channel
(Figure 22) that allows the coupler to be raise or lowered to
a desired height. Periodically check the channel bolts for
damage or loosening.
Wheel Bearings (Hubs)
Wheeel bearings (Figure 23) must beinspected and
lubricated once a year or 12,000 miles toinsure safe
operation of your trailer.
If a trailer wheel bearing is immersed in water, it must be
replaced.
If the pump/trailer has not been used for an extended
amount of time, have the bearings inspected and packed
more frequently, at least every six months and prior to use.
Follow the steps below to disassemble and service the
wheel bearings.
■ After removing the dust cap, cotter pin, spindle nut
and spindle washer, remove the hub and drum to
inspect the bearings for wear and damage.
MAINTENANCE (TRAILER)
Figure 22. Adjustable Channel
With Pintle Eye Coupler
DANGER — Wheel Bearings
If trailer wheels are under water for a long period of
time, wheel bearings may fail. If this is the case, service
wheel bearings immediately.
The possibility exists of the wheels falling off, causing
equipment damage and severe bodily harm even death!
■ 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.
■ Replace seals that have nicks, tears or wear.
■ 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.
■ Turn the hub slowly, by hand, while tightening the spindle
nut, until you can no longer turn the hub by hand.
■ 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.
■ Install a new cotter pin through the spindle nut and axle.
■ 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).
Figure 23. Wheel Hub Components
WHEEL
HUB
BEARING
CUP
BEARING
CONE
OIL
SEAL
CASTLE
NUT
SPINDLE
WASHER
COTTER
PIN
DUST
CAP LUG
NUT