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WARNING
Failure to maintain proper 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 adjustment or repairs.
Table 15. Hydraulic Brake Troubleshooting
Symptom
Possible Cause
No Brakes
Brake line broken or kinked?
Brake lining glazed?
Trailer overloaded?
Brake drums scored or
Weak Brakes or
Brakes Pull to
grooved?
One Side
Tire pressure correct?
Tires unmatched on the
same axle?
Brake components loose,
bent or broken?
Locking Brakes
Brake drums out-of-round?
System lubricated?
Noisy Brakes
Brake components correct?
Brake lining thickness
incorrect or not adjusted
Dragging
correctly?
Brakes
Enough brake fluid or correct
fluid?
ADJUSTABLE CHANNEL
Your trailer may be equipped with an adjustable channel
(Figure 61 ) 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 manufacturer's recommended parts
when replacing channel mounting hardware.
PAGE 40 — DCA25USI4CAN 60 HZ GENERATOR • OPERATION AND PARTS MANUAL — REV. #2 (11/23/16)
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
NYLOC
2" or 2-5/16" BALL
5/8" FLAT
COUPLER
WASHER
Figure 61. Adjustable Channel
Wheel Bearings
Wheel bearings (Figure 62) must be inspected and
lubricated once a year or 12,000 miles to insure safe
operation of your trailer.
If trailer wheel bearings are immersed in water, they must
be replaced.
DANGER
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!
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 62.
BEARING
OIL
SEAL
BEARING
CUP
LUG
NUT
Figure 62. Wheel Hub Components
ADJUSTABLE
CHANNEL
5/8"
NUT
5/8" X 11" X 5"
BOLT
5/8" FLAT
3" PINTLE EYE
WASHER
RING
WHEEL
HUB
COTTER
BEARING
PIN
CUP
BEARING
SPINDLE
WASHER
SPINDLE
NUT
5/8"
NYLOC
NUT
DUST
CAP
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