MULTIQUIP MAYCO LS300GK Operation Manual page 55

WARNING
Failure to maintain the proper hydraulic fluid level in
the actuator may result in loss of braking action which
could cause severe property damage, injury or death.
Periodically check the actuator mounting fasteners for
damage or loosening. Inspect the actuator for worn or
damaged parts. As you are towing your trailer, be aware
of any changes in braking quality. This could be an early
warning of brake or actuator malfunction and requires
immediate attention. Consult a certified brake specialist to
make necessary adjustments or repairs. Refer to Table 6
for hydraulic brake troubleshooting.
Table 6. Hydraulic Brake Troubleshooting
Symptom Possible Cause
No Brakes Brake line broken or kinked?
Brake lining glazed?
Trailer overloaded?
Weak Brakes or Brake drums scored or
Brakes Pull to grooved?
One Side
Tire pressure incorrect?
Tires unmatched on the
same axle?
Brake components loose,
bent or broken?
Locking Brakes
Brake drums out-of-round?
System not lubricated?
Noisy Brakes
Brake components incorrect?
Brake lining thickness
incorrect or not adjusted
Dragging
correctly?
Brakes
Not enough brake fluid or
incorrect fluid?
ADJUSTABLE CHANNEL
Your trailer may be equipped with an adjustable channel
(Figure 58) that allows the coupler to be raised or lowered
to a desired height. Periodically check the channel bolts
for damage or loosening.
NOTICE
When replacing channel mounting hardware (nuts,
bolts and washers), NEVER substitute substandard
hardware. Pay close attention to bolt length and grade.
ALWAYS use the manufacturer's recommended parts
when replacing channel mounting hardware.
MAYCO LS300GK CONCRETE PUMP • OPERATION MANUAL — REV. #1 (10/14/22) — PAGE 55
Solution
Repair or replace.
Reburnish or replace.
Correct weight.
Machine or replace.
Inflate all tires equally.
Match tires.
Replace components.
Replace.
Lubricate.
Replace and correct.
Install new shoes and
linings.
Replace rubber parts.
Fill with DOT 4 fluid.
TRAILER MAINTENANCE
ADJUSTABLE
CHANNEL
5/8" X 11" X 5"
BOLT
2" or 2-5/16" BALL 5/8" FLAT
COUPLER WASHER
Figure 58. Adjustable Channel
WHEEL BEARINGS
Wheel bearings must be inspected and lubricated once
a year or every 12,000 miles to ensure safe operation of
your trailer.
If trailer wheel bearings are immersed in water, they must
be replaced.
DANGER
If the trailer wheels are underwater for a long period
of time, the wheel bearings may fail. If this is the case,
service the wheel bearings immediately.
The possibility exists of the wheels falling off causing
equipment damage and severe bodily harm or even
death!
If the 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 the wheel hub and
service the wheel bearings. See Figure 59.
BEARING
OIL
SEAL
BEARING
CUP
LUG
NUT
Figure 59. Wheel Hub Components
ADJUSTABLE
CHANNEL
5/8"
NYLOC
NUT
5/8" X 11" X 5"
BOLT
5/8" FLAT
3" PINTLE EYE
WASHER NYLOC
RING
WHEEL
HUB
COTTER
BEARING
PIN
CUP
BEARING
SPINDLE
WASHER
SPINDLE
NUT
5/8"
NUT
DUST
CAP