Trailer maintenance – Multiquip MQ MultiQuip Power DCA85USJ2 User Manual
Page 57
DCA85USJ2 60 HZ GENERATOR • OPERATION AND PARTS MANUAL — REV. #1 (03/22/11) — PAGE 57
TRAILER MAINTENANCE
TRAILER MAINTENANCE
This section is intended to provide the user with generic 
trailer service and maintenance information. The service 
and maintenance guidelines referenced in this section refer 
to a wide range of trailers. 
Remember periodic inspection of the trailer will ensure safe 
towing of the generator and will prevent personal injury and 
damage to the equipment.
The definitions below describe some of the major 
components of a typical trailer that would be used with 
generator.
1. Fuel Cell — Provides an adequate amount of fuel for
the equipment in use. Fuel cells must be empty when 
transporting equipment.
2. Braking System — System employed in stopping
the trailer. Typical braking systems are electric, surge, 
hydraulic, hydraulic-surge and air.
3. GVWR — Gross Vehicle Weight Rating (GVWR) is
the maximum number of pounds the trailer can carry, 
including the fuel cell (empty).
4. Frame Length — Measurement is from the ball hitch
to the rear bumper (refl ector).
5. Frame Width — Measurement is from fender to
fender
6. Jack Stand — Trailer support device with maximum
pound requirement from the tongue of the trailer.
7. Coupler — Type of hitch used on the trailer for
towing.
8. Tire Size — Indicates the diameter of the tire in
inches (10,12,14, etc.), and the width in millimeters 
(175,185,205, etc.). The tire diameter must match the 
diameter of the tire rim.
9. Tire Ply — The tire ply (layers) number is rated in
letters; 2-ply,4-ply,6-ply, etc.
10. Wheel Hub — The wheel hub is connected to the
trailer’s axle.
11. Tire Rim — Tires mounted on a tire rim. The tire rim
must match the size of the tire.
12. Lug Nuts — Used to secure the wheel to the wheel
hub. Always use a torque wrench to tighten down 
the lug nuts. See Table 18 and Figure 64 for lug nut 
tightening and sequence. 
13. Axle — Indicates the maximum weight the axle can
support 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.
14. Suspension — Protects the trailer chassis from shocks
transmitted through the wheels. Types of suspension 
used are leaf, Q-fl ex, and air ride.
15. Electrical — Electrical connectors (looms) are provided
with the trailer so the brake lights and turn signals can 
be connected to the towing vehicle. 
16. Application — Indicates which units can be employed
on a particular trailer.