troubleshooting (hydraulic brakes)

Troubleshooting (Hydraulic Brakes )

Symptom

Possible Problem

Solution

 

 

 

No brakes

Is the brake line broken or kinked?

Repair or replace.

 

Is the brake lining glazed?

Reburnish or replace

 

Is the trailer overloaded?

Correct weight.

 

 

 

 

Are the brake drums scored or

Check machine or replace.

Weak brakes or brakes pull to one side

grooved?

 

Is the tire pressure correct?

Infl ate all tires equally per manufacturer

 

 

guidelines.

 

 

 

Are the tires unmatched on the

Match tires.

 

same axle?

 

 

 

Are the brake components loose,

Replace components.

Locking brakes

bent or broken?

 

 

Are the brake drums out-of-round?

Replace.

 

Is the brake system lubricated?

Lubricate.

Noisy brakes

Are the correct brake components

Replace and correct.

 

installed?

 

 

 

Is the brake lining thickness correct

Install new shoes and linings.

Dragging brakes

or innstalled incorrectly?

 

Is there enough brake fl uid or

Fill with DOT 4 fl uid.

 

 

correct fl uid?

 

 

 

Overheated wheel bearing

Replace wheel bearing and pack with

 

grease.

 

 

Brakes squeak, chatter or chuck

Low brake fl uid

Fill and bleed brake system.

Siezed acutator master cylinder

Replace/Rebuild master cylinder.

 

 

Brake shoe noise

Inspect drums. Adjust shoes or replace if

 

necessary.

 

 

 

Leaking wheel cylinder

Check and replace wheel cylinder and

 

bleed brake system.

 

 

 

Low brake fl uid level

Fill with dot approved brake fl uid and bleed

 

brake system.

 

 

 

Brake actuator frame damage

Replace complete actuator unit.

 

Brake line being pinched

Replace brake line.

Brakes overheat, fail to operate, pull to

Seized actuator

Replace or rebuild actuator.

the side, or function poorly

 

 

Broken return spring

Replace spring.

 

 

Brakes improperly adjusted

Check adjustment.

 

 

Break-away cable might be pulled.

 

Break-away cable system partially

Determine cause and correct. Pry up on

 

cable until indicator bead touches or rests

 

activated

 

against cable spring stop. This will fully

 

 

 

 

release the frame brakes and prevent drag.

page 76 — MAYCO LS600P CONCRETE PUMP • operation manual — rev. #0 (05/13/13)

Page 76
Image 76
Multiquip LS600P operation manual Troubleshooting hydraulic brakes

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