BENDIX BRIP-0300 User Manual

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Dragging brakes

See DRAGGING BRAKES

Insufficient lining-to-drum contact:
•

Bell-mouthed drum condition

 Replace drum (3,6)

•

Poor surface condition of drum

 Rebore or replace drum (3,6)

•

Bent brake spider

 Replace spider (3,6)

•

Bent or stretched brake shoe

 Replace shoe (3,6)

•

Loose wheel bearing

 Torque spindle nuts and check end play (6)

•

Worn or damaged camshaft

 Replace camshaft (3,6)

•

Improper lining grind

 Grind linings to fit drum radius

Linings tapered across width:
•

Bell-mouthed drum condition

 Replace drum (3,6)

•

Poor surface condition of drum

 Rebore or replace drum (3,6)

•

Bent brake spider

 Replace spider (3,6)

•

Loose wheel bearing

 Torque spindle nuts and check end play (6)

Unequal shoe wear on same brake:
•

Mismatched lining friction codes

 Correct as required with proper lining (5)

•

Worn camshaft or bushings

 Replace camshaft or bushings (3,6)

Glazed linings:
•

Unbalanced brake system

 Inspect brake system (2)

•

Incorrect lining for vehicle type and service

 Install proper lining (6)

•

Dragging spring brake chamber

 Inspect valves and chamber for leaks. Replace air

chamber (4,6)

Scored or grooved linings and drum:
•

Improperly machined drum

 Replace or machine drum (3,6)

•

Abrasive material between lining and drum

 Remove dirt and debris. Clean drum and remachine

if required (3)

Loose lining:
•

Improper rivet size

 Replace rivets (5)

•

Improper crimping of rivets

 Replace rivets (5)

•

Enlarged rivet holes in shoe

 Replace shoe (3,6)

•

Incorrect lining hole size or counterbore depth

 Replace lining (5)

Cracked lining at rivet holes:
•

Dirt or rust on shoe table

 Remove dirt and debris. Clean and repaint shoe (3)

•

Incorrect counterbore lining size

 Replace linings (5)

•

Loose rivets

 Replace linings and check rivet process (5)

This Eaton manual is intended as a diagnostics guide for technicians
involved in the servicing of Eaton EB and ES Model Brakes.

This manual outlines the steps necessary to pinpoint the source of
problems and concerns related to braking systems. It does not describe
service procedures, but instead refers the technician to service manual
sections whenever possible. Therefore, this manual should be used as a
“checklist” in conjunction with Eaton service manuals and other
procedural guides.

To isolate the source of a problem or concern, follow the steps below:

1. Identify the symptom(s) exhibited by the braking system. Locate the

related section in this manual. (For example, if the brakes are making
unusual sounds, turn to the page labeled “Noise”.)

2. Use the left-hand column as a checklist. Check each item on the list.

If an item is found to be defective, perform the corresponding action
prescribed in the right-hand column. (For example, noise may be
caused by a bent brake spider. The recommended action is to replace
the spider.)

3. Refer to the appropriate service manual section for information on

specific procedures. Related service manual sections are shown in
parenthesis, whenever possible.(Service Manual  BRSM-0033)

Note: Included in the General Information section are assembly diagrams
to assist in troubleshooting.

Work through all potential conditions or causes related to the

symptom encountered before making a final conclusion. It is possible
that several problems exist, each with the same symptom. Therefore,
checking each item on the list will help to ensure that all problem sources
are eliminated or corrected.

Replace only those parts that have been identified as definite

problems. Doing so will save unnecessary time and expense.