DCA-125USJ —TRAILER MAINTENANCE

Tires/Wheels/Lug Nuts

Tires and wheels are a very important and critical components of the trailer. When specifying or replacing the trailer wheels it is important the wheels, tires, and axle are properly matched.

CAUTION - EYESIGHT HAZARD

ALWAYS wear safety glasses when removing or installing force fitted parts. Failure to comply may result in serious injury.

CAUTION - REPAIRINGTRAILER WHEELS

DO NOT attempt to repair or modify a wheel. DO NOT install in inner tube to correct a leak through the rim. If the rim is cracked, the air pressure in the inner

tube may cause pieces of the rim to explode (break off) with great force and cause serious eye or bodily injury.

Suspension

The leaf suspension springs and associated components (Figure 58) should be visually inspected every 6,000 miles for signs of excessive wear, elongation of bolt holes, and loosening of fasteners. Replace all damaged parts (suspension) immediately. Torqued suspension components as detailed in Table 16.

Figure 58. Major Suspension Components

Tire Wear/Inflation

Tire inflation pressure is the most important factor in tire life. Pressure should be checked cold before operation DO NOT bleed air from tires when they are hot!. Check inflation pressure weekly during use to insure the maximum tire life and tread wear.

Table 15 (Tire Wear Troubleshooting) will help pinpoint the causes and solutions of tire wear problems.

TABLE 15. TIREWEARTROUBLESHOOTING

 

 

 

 

 

 

 

 

 

 

 

 

 

 

WEAR PATTERN

CAUSE

SOLUTION

 

 

 

 

 

 

 

 

 

Over Inflation.

Adjust pressure to

 

 

 

 

 

 

 

 

Center Wear

particular load per tire

 

 

 

 

 

 

 

 

 

 

manufacturer.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Adjust pressure to

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

EdgeWear

Under Inflation.

particular load per tire

 

 

 

 

 

 

 

 

 

 

manufacturer.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Side Wear

Loss of camber

Make sure load does

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

not exceed axle rating.

 

 

 

 

 

 

 

 

or overloading.

 

 

 

 

 

 

 

 

 

Align wheels.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ToeWear

Incorrect toe-in.

Align wheels.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Cupping

Out-of-balance.

Check bearing adjustment

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

and balance tires.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Flat Spots

Wheel lockup &

Avoid sudden stops when

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

tire skidding.

possible and adjust brakes.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Table 16. Suspension Torque Requirements

Item

Torque (Ft.-Lbs.)

 

 

3/8" U-BOLT

MIN-30 MAX-35

 

 

7/16" U-BOLT

MIN-45 MAX-60

 

 

1/2" U-BOLT

MIN-45 MAX-60

 

 

SHACKLE BOLT

SNUG FIT ONLY. PARTS MUST ROTATE FREELY.

LOCKING NUTS OR COTTER PINS ARE PROVIDED

SPRING EYE BOLT

TO RETAIN NUT-BOLT ASSEMBLY.

 

 

 

SHOULDER TYPE

MIN-30 MAX-50

SHACKLE BOLT

 

 

 

PAGE 44 — DCA-125USJ — OPERATION AND PARTS MANUAL — REV. #2 (01/27/11)

Page 43 Page 45
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Image 44
Multiquip DCA125USJ operation manual Tires/Wheels/Lug Nuts, Suspension, Tire Wear/Inflation
Page 43 Page 45

DCA125USJ specifications

The Multiquip DCA125USJ is a robust, high-performance generator designed to meet the diverse needs of various industries, including construction, events, and emergency backup. This generator boasts a compact size and impressive output, making it a reliable choice for both temporary and permanent power solutions.

At the heart of the DCA125USJ is a powerful diesel engine, providing an impressive 125 kVA output. This engine is engineered for efficiency, ensuring that the generator can continuously deliver reliable power while maintaining low operational costs. The generator operates at low RPM, which not only extends the engine's lifespan but also reduces noise levels, making it ideal for urban environments and sensitive locations.

One of the standout features of the DCA125USJ is its advanced electronic control system. This technology allows for seamless monitoring and management of the generator's performance, ensuring optimal operation. The control panel is user-friendly, offering real-time data on voltage, frequency, and operating hours, which simplifies maintenance and troubleshooting.

The DCA125USJ is equipped with a sturdy, weather-resistant enclosure that protects it from the elements, making it suitable for outdoor applications. This enclosure also contributes to noise reduction, ensuring quieter operation compared to traditional generators. Additionally, its compact design allows for easy transport and installation, making it a versatile option for various job sites.

Safety is a top priority in the design of the DCA125USJ. It features multiple safety mechanisms, such as an automatic shut-off system that activates in the event of low oil pressure or overheating, protecting the generator and prolonging its operational life.

Moreover, the DCA125USJ is compliant with rigorous emissions standards, making it an environmentally responsible choice. It offers options for multiple voltage outputs, which adds to its adaptability for different applications, from powering heavy machinery to providing electricity for small tools.

In summary, the Multiquip DCA125USJ stands out for its powerful diesel engine, state-of-the-art electronic controls, robust construction, and focus on safety and efficiency. Whether used in construction, outdoor events, or as a backup power source, the DCA125USJ is engineered to deliver reliable performance in a user-friendly package. This makes it a top contender for anyone needing dependable generator capabilities.
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