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OM-659 Page 8
3-7. Maintenance
WARNING
FALLING EQUIPMENT can cause serious personal injury and equipment damage.
• Apply parking brake while performing maintenance (see Section 3-1).
• Support trailer with jack, or use proper equipment to lift trailer.
• Do not put any body part under trailer while lifting or performing maintenance.
rwarn1.1* 3/93
Do not use trailer if any part is damaged or not working properly. When performing
maintenance, check trailer for worn, damaged, or non-working parts. Check for
free rotation of assemblies mounted on bushings or bearings.
NOTE
ST-800 017
Support trailer with jack. Apply parking brake.
Once a year, lubricate all moving parts on
trailer with SAE 20W oil. Lubricate more often
if trailer is exposed to elements or subject to
frequent off-road use.
1 Wheel Bearings
Every 12,000 miles, check wheel bearings.
Repack bearings if necessary using a good
quality lithium-based extreme pressure
grease.
2 Brake Linings
Check linings every 20,000 miles and re-
place if necessary.
When reinstalling wheels, be sure wheel nuts
are properly tightened (see Trailer Towing
Safety Precautions).
3 Brake Fluid Reservoir
Check fluid level in reservoir at least 3 times
yearly. Add fluid if not up to full mark. Use
DOT Series 3 brake fluid from a sealed con-
tainer. See brake actuator Owner’s Manual.
4 Parking Brake Handle
To adjust parking brake, release brake and
turn handle. Turn clockwise to increase
brake pressure or counterclockwise to de-
crease brake pressure.
Adjust brake so less than 30 ft lb (41 N
.
m) of
force is required to apply or release brake
handle.
If parking brake cannot be adjusted by turn-
ing handle, proceed as follows:
Release parking brake. Turn parking brake
handle counterclockwise as far as possible.
5 Lock Nuts
6 Adjustment Rod
Loosen lock nuts on rod. Slide rod slightly for-
ward. Tighten nuts.
Turn handle clockwise until parking brake is
properly adjusted.
Tools Needed:
1/2, 1-1/8 in
BRAKE
FLUID
3
4
5
6
1
2
1
Replace trailer hardware
only with SAE grade 5 hard-
ware of same type and size
as originally installed.
Block wheels when adjusting
parking brake.
Figure 3-8. Trailer Maintenance