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CAUTION
CAUTION:
CAUTION
CAUTION
CAUTION
ALWAYS make sure the trailer is in good
operating condition. Check the tires for
proper inflation and wear. Also check the
wheel lug nuts for proper tightness.
Explanation of Chart:
This section is to provide the user with trailer service and
maintenance information. The service and maintenance
guidelines referenced in this section apply a wide range of
trailers. Remember periodic inspection of the trailer will en-
sure safe towing of the equipment and will prevent damage
to the equipment and personal injury.
It is the purpose of this section to cover the major mainte-
nance components of the trailer. The following trailer com-
ponents will be discussed in this section:
Brakes
Tires
Lug Nut Torquing
Suspension
Electrical
Brake Troubleshooting Tables
Use the following definitions when reading Table 2.
1. Fuel Cell - Provides an adequate amount of fuel for the
equipment in use. Fuel cells must be empty when trans-
porting equipment.
2. Braking System - System employed in stopping the
trailer. Typical braking systems are electric, surge, hy-
draulic, hydraulic-surge and air.
3. GVWR- Gross Vehicle Weight Rating (GVWR), is the
maximum number of pounds the trailer can carry, in-
cluding the fuel cell (empty).
4. Frame Length - Measurement is from the ball hitch to
the rear bumper (reflector).
DCA-125USJ (50 HZ) — OPERATION AND PARTS MANUAL — REV. #0 (03/11/05) — PAGE 17
DCA-125USJ (50 HZ)— TRAILER SPECIFICATIONS
5. Frame Width - Measurement is from fender to fender
6. Jack Stand - Trailer support device with maximum pound
7. Coupler - Type of hitch used on the trailer for towing.
8. Tire Size - Indicates the diameter of the tire in inches
9. Tire Ply - The tire ply (layers) number is rated in letters;
10. Wheel Hub - The wheel hub is connected to the trailer's
11. Tire Rim - Tires mounted on a tire rim. The tire rim must
12. Lug Nuts - Used to secure the wheel to the wheel hub.
13. Axle - Indicates the maximum weight the axle can sup-
14. Suspension - Protects the trailer chassis from shocks
15. Electrical - Electrical connectors (looms) are provided
16. Application - Indicates which units can be employed
requirement from the tongue of the trailer.
(10,12,14, etc.), and the width in millimeters
(175,185,205, etc.). The tire diameter must match the
diameter of the tire rim.
2-ply,4-ply,6-ply, etc.
axle.
match the size of the tire.
Always use a torque wrench to tighten down the lug nuts.
See Table 17 and Figure 67 for lug nut tightening and
sequence.
port in pounds, and the diameter of the axle expressed
in inches. Please note that some trailers have a double
axle. This will be shown as 2-6000 lbs., meaning two
axles with a total weight capacity of 6000 pounds.
transmitted through the wheels. Types of suspension
used are leaf, Q-flex, and air ride.
with the trailer so the brake lights and turn signals can
be connected to the towing vehicle.
on a particular trailer.
1
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