TRAILER MAINTENANCE

BRAKES

Trailer brakes should be inspected the first 200 miles of operation.This will allow the brake shoes and drums to seat properly. After the fi rst 200 mile interval, inspect the brakes every 3,000 miles. If driving over rough terrain, inspect the brakes more frequently.

Figure 59 displays the major hydraulic surge brake components that will require inspection and maintenance. Please inspect these components as required using steps

1 through 8 and Table 15 as listed below:

Brake Adjustment

1.Place the trailer on jack stands. Make sure the jack stands are placed on secure level ground.

2.Check the wheel and drum for free rotation.

3.Remove the adjusting hole cover from the adjusting slot at the bottom brake backing plate.

4.With a screwdriver or standard adjusting tool, rotate the star wheel of the adjuster assembly to expand the brake shoes.

5.Adjust the brake shoes outward until the pressure of the lining against the wheel drum makes the wheel diffi cult to turn.

6.Adjust, rotate the star wheel in the opposite direction until the wheel rotates freely with slight lining drag.

7.Replace the adjusting hole cover and lower the trailer to the ground.

8.Repeat steps 1 through 7 on the remaining brakes.

Hydraulic Surge Brakes

Hydraulic surge brakes (Figure 59) should not require any special attention with the exception of routine maintenance such as shoe and lining replacement. Brake lines should be periodically checked for cracks, kinks, or blockage.

Figure 59. Hydraulic Brake Components

Actuator

Hydraulic surge braking requires the installation of an actuator at the tongue of the trailer. Remember the surge or push of the trailer toward the tow vehicle automatically synchronizes the trailer brakes with the tow vehicle brakes. As the trailer pushes against the tow vehicle the actuator telescopes together and applies force to the master cylinder, supplying hydraulic pressure to the trailer brakes.

Periodically check and test the surge“actuator”to make sure that it is functioning correctly. Never use an undersize actuator.

Table 15. Hydraulic Brake Troubleshooting

 

Symptom

Possible Cause

Solution

 

 

No Brakes

Brake line broken or kinked?

Repair or replace.

 

 

 

Brake lining glazed?

Reburnish or replace.

 

 

Weak Brakes or Brakes Pull to

Trailer overloaded?

Correct weight.

 

 

 

 

 

 

Brake drums scored or grooved?

Machine or replace.

 

 

One Side

 

 

 

 

 

 

Tire pressure correct?

Infl ate all tires equally.

 

 

 

 

 

 

 

 

 

 

 

Tires unmatched on the same axle?

Match tires.

 

 

 

 

 

 

 

 

Brake components loose, bent or

Replace components.

 

 

Locking Brakes

broken?

 

 

 

 

 

 

Brake drums out-of-round?

Replace.

 

 

Noisy Brakes

System lubricated?

Lubricate.

 

 

Brake components correct?

Replace and correct.

 

 

 

 

 

 

Brake lining thickness incorrect or

Install new shoes and

 

 

Dragging Brakes

not adjusted correctly?

linings.

 

 

Enough brake fl uid or correct fl uid?

Replace rubber parts

 

 

 

 

 

 

fi ll with dot 4 fl uid.

 

 

 

 

 

 

 

 

 

 

DCA125SSIU 60 HZ GENERATOR • OPERATION AND PARTS MANUAL — REV. #3 (01/13/11) — PAGE 43

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Multiquip DCA125SSIU manual Brake Adjustment, Hydraulic Surge Brakes, Actuator
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DCA125SSIU specifications

The Multiquip DCA125SSIU is a robust and versatile diesel generator that is designed to meet the power needs of various applications, from construction sites to events and emergency situations. With a power output of 125 kVA, this generator combines efficiency and reliability, making it an ideal choice for professionals who demand optimal performance in challenging environments.

One of the primary features of the DCA125SSIU is its industrial-grade a diesel engine. This engine not only delivers impressive power but also emphasizes fuel efficiency. The generator is equipped with advanced fuel management technologies that help minimize consumption while maximizing output, making it cost-effective for long-term use.

In terms of durability, the DCA125SSIU is built with a sturdy enclosure that protects it from environmental factors. The weather-resistant design ensures that it operates effectively in a variety of weather conditions, ensuring reliable performance when needed the most. Additionally, its compact size allows for easy transport and storage, which is particularly beneficial for contractors and rental companies.

The DCA125SSIU features a user-friendly control panel that provides essential information at a glance. This panel includes gauges for monitoring key parameters such as voltage, frequency, and hours of operation. It also has an automatic voltage regulator (AVR) that maintains consistent voltage output, safeguarding connected equipment from potential damage caused by power fluctuations.

Safety is a priority with the DCA125SSIU, as it is equipped with several emergency shutdown features. These include low oil pressure, high temperature, and overload protection, ensuring that the generator operates safely under all conditions. Further enhancing its operational reliability, the generator comes with a built-in fuel tank that allows for extended runtime, reducing the frequency of refueling during use.

In summary, the Multiquip DCA125SSIU is a powerful, durable, and efficient diesel generator that meets the diverse power needs of various industries. Its combination of a high-performance engine, user-friendly control panel, robust safety features, and fuel efficiency makes it an exceptional choice for anyone looking for a reliable power solution. Whether for temporary power during events, backup for critical systems, or support at construction sites, the DCA125SSIU is engineered to perform.
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