NHTSA ID Number: 10199662
Manufacturer Communication Number: SD-22-70147
TSB/Document Date: 2021-08-02
Summary
Service Data Sheet - The Bendix
® ES™ foundation drum brake is used in various applications on axles of commercial vehicles, providing the service and parking brake function. This document is intended to act as a source of maintenance information to those involved in servicing Bendix® brakes.
SD-22-70147
®
Formerly BW7258
Bendix® ES™ Foundation Drum Brake
Actuator
Brake Spider
Slack Adjuster
Retainer Spring
Cam Shaft
Cam Roller
Shoe Assembly
Return Spring
Bendix® ES™ Foundation Drum Brake
Figure 1 – Bendix® ES™ Foundation Drum Brake
DESCRIPTION
PURPOSE OF THIS MANUAL
The Bendix® ES™ foundation drum brake is used in
various applications on axles of commercial vehicles,
providing the service and parking brake function.
This document is intended to act as a source of
maintenance information to those involved in servicing
Bendix® brakes.
With all types of drum brakes, friction forces are
generated by the internal brake shoes being pressed
against the inner surfaces of the brake drum by the force
generated by a cam. Due to their almost completely
sealed housing, the brake shoes are well protected
against corrosive influences (water, salt, and dust) and
dirt (sand, stones, and mud), even when driving on rough
terrain.
With the S-cam brake, the cam and camshaft are rotated
as a result of the force of the brake actuator acting on
the slack adjuster. The brake shoes with brake linings
are thereby pressed against the brake drums.
ADDITIONAL SUPPORT
For additional service information contact the Bendix
Tech Team online at techteam@bendix.com, or by
calling 1-800-AIR-BRAKE (1-800-247-2725), option 2.
Tech Team members are available Monday through
Thursday, 8:00 a.m. to 6:00 p.m. and Friday, 8:00 a.m.
to 5:00 p.m. ET.
2
General Information
TABLE OF CONTENTS
Section 1: General Information
Description.............................................................................................................1
Safety Guidelines/Warnings...................................................................................2
Model Coverage..................................................................................................4-5
Parts Nomenclature...........................................................................................5-12
Model Bendix® ES™-165 and EB™-165 Interchangeability..........................10
EB™ Brake Roller and ES™ Brake Cam Interchangeability.........................10
Section 2: Periodic Service
Brake Maintenance Preliminary Steps.................................................................13
Brake Adjustment.................................................................................................13
Brake Operation Check........................................................................................15
Lubrication............................................................................................................15
Periodic Inspections.............................................................................................16
Service Intervals...................................................................................................16
Section 3: Removal/Disassembly
Brake Assembly Removal....................................................................................17
Shoe Removal.................................................................................................17-20
Roller Removal................................................................................................21-23
Slack Adjuster Removal.......................................................................................24
Camshaft Removal...............................................................................................24
Air Chamber Bracket Removal.............................................................................24
Spider Removal....................................................................................................25
Dust Shield Removal............................................................................................25
Cleaning Brake Parts...........................................................................................26
Section 4: Inspection
Drum Inspection...................................................................................................27
Shoe and Lining Inspection.............................................................................28-29
Camshaft Radial Play Inspection.........................................................................30
Camshaft Inspection.............................................................................................30
Camshaft Bushing and Seal Inspection...............................................................30
Spider Inspection..................................................................................................31
Air Chamber Bracket Inspection...........................................................................31
Air Chamber Inspection........................................................................................32
Slack Adjuster Inspection.....................................................................................32
Section 5: Repair/Replacement
Camshaft Bushing/Grease Seal Replacement.....................................................33
Lining Replacement..............................................................................................34
Section 6: Installation/Assembly
Spider Installation.................................................................................................35
Dust Shield Installation (Two Piece).....................................................................35
Dust Shield Installation (One Piece).....................................................................36
Air Chamber Bracket Installation..........................................................................37
Camshaft Installation............................................................................................38
Cam Head Washer Installation.............................................................................39
Slack Adjuster Installation....................................................................................39
Shoe and Lining Installation.................................................................................41
Shoe Installation..............................................................................................42-47
Specification Chart ...........................................................................................48
3
General Information
MODEL COVERAGE
The service procedures and specifications in this
publication cover the Bendix® brake models listed in
Table 1. The basic instructions cover all 15", 16.5", and
18" brake types and sizes, unless specified otherwise.
A breakdown of Bendix brake model identification is
provided in Figure 2.
Size
Bendix® ES™
Brake Model
in.
Configuration
mm
Shoe
Spider
Anchor
Applications
ES-150-04D
15.0 x 4
381 x 102
Fabricated
Cast
SAP
Steer Axles
ES-150-04L
15.0 x 4
381 x 102
Fabricated
Fabricated
SAP
Steer Axles
ES-150-08D
15.0 x 8.63
381 x 219
Fabricated
Cast
SAP
Drive Axles
ES-165-05D
16.5 x 5
419 x 127
Fabricated
Cast
SAP
Steer
ES-165-05L
16.5 x 5
419 x 127
Fabricated
Fabricated
SAP
Steer
ES-165-05X
16.5 x 5
419 x 127
Fabricated
Fabricated
SAP
Steer
ES-165-06D
16.5 x 6
419 x 152
Fabricated
Cast
SAP
Steer
ES-165-06L
16.5 x 6
419 x 152
Fabricated
Fabricated
SAP
Steer
ES-165-06X
16.5 x 6
419 x 127
Fabricated
Fabricated
SAP
Steer
ES-165-07D
16.5 x 7
419 x 178
Fabricated
Cast
SAP
Steer or Drive Axles
ES-165-07H
16.5 x 7
419 x 178
Cast
Heavy Cast
DAP
On/Off Hwy. Drive Axles
ES-165-07L
16.5 x 7
419 x 178
Fabricated
Fabricated
SAP
Steer or Drive Axles
ES-165-07M
16.5 x 7
419 x 178
Fabricated
Heavy Cast
DAP
On/Off Hwy. Drive Axles
ES-165-07X
16.5 x 7
419 x 178
Fabricated
Fabricated
DAP
Steer or Drive Axles
ES-165-07Z
16.5 x 7
419 x 178
Fabricated
Fabricated
DAP
Steer or Drive Axles
ES-165-08L
16.5 x 8.63
419 x 219
Fabricated
Fabricated
SAP
Drive Axles
ES-165-08D
16.5 x 8.63
419 x 219
Fabricated
Cast
SAP
Drive Axles
ES-165-08X
16.5 x 8.63
419 x 219
Fabricated
Fabricated
SAP
Drive Axles
16.5 x 8.63
419 x 219
Fabricated
Fabricated
SAP
Drive Axles
ES-165-08Z
Table 1 – Bendix Brake Models and Specifications
®
4
General Information
MODEL COVERAGE
Bendix® Brake Model Identification
Configurations
H - Cast Shoe/Heavy Cast Spider DAP
L - Fabricated Shoe/Fabricated Spider SAP
M - Fabricated Shoe/Cast Spider (DAP Closed A/P)
R - Cast Shoe/Heavy Cast Spider SAP
S - Reinforced Fabricated Shoe/Heavy Cast Spider SAP
X - Fabricated Shoe/Heavy Fabricated Spider SAP
Z - Reinforced Fabricated Shoe/Heavy Fabricated Spider SAP
ES-165-07X
Service
ES Extended Service
Shoe Size
Drum Diameter
04 - 102 mm (4”)
05 – 127 mm (5”)
06 – 152 mm (6”)
07 – 178 mm (7”)
08 – 219 mm (8.63”)
150 - 381 mm (15”)
165 - 419 mm (16.5”)
180 - 457 mm (18”)
SAP - Single Anchor Pin
DAP - Double Anchor Pin
Figure 2 – Bendix® Brake Model Identification
PARTS NOMENCLATURE
General parts nomenclature for Bendix® brake models are
identified in Figure 3. Exploded views of various brake
models are shown for part identification.
Large Clevis Pin Retaining Clip
Large Clevis Pin
Small Clevis Pin
Bendix® ES™ Brake
ES-150-04D
Small Clevis Pin Retaining Clip
Camshaft Retainer
Snap Ring
Camshaft Shim
Washer
Slack Adjuster
Slack Adjuster
Inner Washer
Grease Seal
Camshaft Bushing
Bracket Mounting Bolt
Lockwasher
Bracket Assembly
Grease Fitting
Camshaft Bushing
Grease Seal
Cam
Roller
Retainer
Shoe Return
Spring
Dust Shield Mounting Bolt
Dust Shield Inspection Plug
Retainer
Shoe Assembly
Dust Shield
Retainer Spring
Camshaft
Cam Head
Washer
Brake
Spider
Cam Roller
Shoe Assembly
Retainer Spring
Figure 3 – Brake Part Nomenclature
5
General Information
PARTS NOMENCLATURE
Bendix® ES™ Brake
ES-150-04L Brake
Large Clevis Pin
Retaining Clip
Camshaft Retainer
Snap Ring
Small Clevis Pin
Retaining Clip
Camshaft Shim
Washer
Large Clevis Pin
Small Clevis Pin
Grease
Fitting
Slack
Adjuster
Slack Adjuster
Inner Washer
Bracket
Assembly
Stabilizer
Bolt
Stabilizer
Flat Washer,
Lockwasher &
Nut
Washer
Bolt
Bracket Bolt
Cam Roller
Return
Spring
Dust Shield Bolt
Dust Shield
Inspection Plug
Shoe Guide
Shoe Assembly
Shoe Assembly
Dust Shield
Cam Roller
Brake Spider
Camshaft
Retainer Spring
Shoe Hold
Down Spring
Bracket Bolt Nut
Bracket Bolt Washer
Figure 3 – Brake Part Nomenclature, Continued
- Mixes well with conventional fluids
- Low-moisture formula provides excellent vapor lock...
- Ideal for hydraulic and disc brakes
- Provides an extra margin of safety in extreme braking...
- Mix of polyglycol ethers ensures hot brake-system operation...
- Excellent for ABS, disc and drum brake systems
- Delivers braking power when needed by avoiding a spongy...
- Both wet and dry boiling points exceed the minimum...
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TSB/Document ID: SD-22-70147
Replacement Service Bulletin Number:
MFR Communication Date: 2021-07-13
MFR Internal Campaign ID/Software Version:
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: SERVICE BRAKES, HYDRAULIC:FOUNDATION COMPONENTS:DRUM:DRUM
MFR Component System:
MFR Component Subsystem:
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