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Service Manua

Trucks

Group 56050

Compressed Air Brake Schematic

VHD

PV776-TSP144276

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Foreword

The descriptions and service procedures contained in this manual are based on de-signs and methods studies carried out up to April 2001.

The products are under continuous development. Vehicles and components producedafter the above date may therefore have different specifications and repair methods.When this is believed to have a significant bearing on this manual, supplementary ser-vice bulletins will be issued to cover the changes.

The new edition of this manual will update the changes.

In service procedures where the title incorporates an operation number, this is a refer-ence to an S.R.T. (Standard Repair Time).

Service procedures which do not include an operation number in the title are for gen-eral information and no reference is made to an S.R.T.

The following levels of observations, cautions and warnings are used in this ServiceDocumentation:

Note:Indicates a procedure, practice, or condition that must be followed in order tohave the vehicle or component function in the manner intended.

Caution:Indicates an unsafe practice where damage to the product could occur.

Warning:Indicates an unsafe practice where personal injury or severe damage to theproduct could occur.

Danger:Indicates an unsafe practice where serious personal injury or death could oc-cur.

Volvo Trucks North America, Inc.Greensboro, NC USA

Order number: PV776-TSP144276

2001 Volvo Trucks North America, Inc., Greensboro, NC USA

All rights reserved. No part of this publication may be reproduced, stored in

retrieval system, or transmitted in any forms by any means, electronic, me-chanical, photocopying, recording or otherwise, without the prior written

permission of Volvo Trucks North America, Inc..

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Contents

General .................................................................................................... 3

Air Brake System ................................................................................... 3

Specifications ......................................................................................... 5

Air Brake System ................................................................................... 5

Tools ........................................................................................................ 7

Special Tools ......................................................................................... 7

Design and Function ............................................................................. 9

Air Brake System ................................................................................... 9

Air Tubing and Fittings ......................................................................... 10

Air Tubing Repair ............................................................................... 14

Air Brake System Schematics: Schematic A - 6x4 or 4x2 ............... 15

Air Brake System Schematics: Schematic B - Auxiliary Lift Axles ... 17

Air Brake System Schematics: Schematic C - Tractor with OnePusher ............................................................................................... 19

Air Brake Routing Schematics ............................................................ 21

Front Brake Valves ............................................................................ 21

Bulkhead ............................................................................................ 22Front Section, Battery Box Left Side Behind Front Fender .............. 23

Front Section, Battery Box Left Side Behind Fuel Tank ................... 24

Front Section, Battery Box Right Side Behind Front Fender, Muf-fler Vertical Left/Vertical Right/Vertical Dual ..................................... 25

Front Section, Battery Box Right Side Behind Front Fender, Muf-fler Horizontal, Axle Back, Air Tanks Right Side ............................... 26

Front Section, Battery Box Right Side Behind Front Fender, Muf-fler Horizontal, Axle Forward, Air Tanks Right Side .......................... 27

Front Section, Battery Box Right Side, Muffler Horizontal, AirTanks Left Side (102 Wide, 22 Fuel Tank or 96 Wide, 26 FuelTank) .................................................................................................. 28

Middle Section, 12x4, Three Pusher Axles, Two Driven Axles ......... 29

Middle Section, 10x4, Two Driven Axles, Two Pusher Axles ............ 30

Middle Section, 8x4, Two Driven Axles, One Pusher Axle or 6x2,One Driven Axle, One Pusher Axle .................................................. 31

Middle Section, No Pushers .............................................................. 32

Truck, Volvo Suspension ................................................................... 33

Truck, Hendrickson HN/RT Suspension ............................................ 34

Truck, Hendrickson A4H Suspension ................................................ 35

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Group 56 Gene

General

Air Brake SystemThis information is provided to help troubleshoot the brake and air systems from point

to point without having to trace the actual tubing. Except for Schematics A, B and C,each schematic describes a particular section of the vehicle with all air lines and com-ponents. Schematics A, B and C describe the complete brake system from a functionalstandpoint (locations of components do not reflect actual locations in vehicle).

This information should be used together with detailed information in Group 56 oneach component, along with information on specifications, troubleshooting and testprocedures.

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4

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Group 56 Specificatio

Specifications

Air Brake System

General

Type ............................................................................................................................................ Compressed air brake

Working pressure ......................................................................................................... 760 to 895 kPa (110 to 130 psNote:Additional tank for Holset twin cylinder compressor (120 to 140 psi)

Variants:

4X2, tractor4X2, truck6X4, tractor6X4, truck8X4, truck10X4, truck12X4, truck

Air Tubing and Fittings

TUBING

Material ................................................................................................................................................ Nylon (polyamide

Standard .................................................................................................................................. SAE J844 & FMVSS 10

Sizes:

Unreinforced ................................................................................................................................................. 1/4 in. O

Reinforced withfiberfilament ............................................................................................ 3/8, 1/2, 5/8 and 3/4 in. O

Safety factor, minimum ............................................................................................................................................. 5.3:

System working pressure, maximum ................................................................................................ 1030 kPa (150 ps

System working temperature range ................................................................................ -40 to +90

C (-40 to +200

F

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Group 56 Too

Tools

Special Tools

The following special tools are used when checking air system pressure or safely dis-connecting air lines. The tools are available from Kent-Moore (1-8003286657).

W0001731

W0001198

W0001874

J-44399Dual air pressure gauge

J-42189Air line disconnect tool,

for 3/8 in. OD and smaller

J-44773Air line release tool,

for 1/2 and 5/8 in. OD

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Group 56 Design and Functi

Design and Function

Air Brake System

W5001291

1 Compressor2 Governor; 2a Governor Servo Valve

3 Air dryer

4 Wet Tank

5 BSystem Tank

6 ASystem Tank

7 Foot Valve

8 Quick Release Valve

9 Relay Valve

10 ABS Modulator Valve

11 Spring Brake Chamber

12 Brake Chamber13 Dash Manifold Valve

14 Quick Release Valve

15 Trailer Hand Brake Valve

16 Manifold Tractor Protection Valve

17 Low Air Pressure Switch

18 Air Pressure Gauge

19 Accessory Manifold

20 Pressure Protection Valve

21 Parking/Daytime Running Light Switch

22 Stop Light Switch

A basic compressed air brake system is separated intotwo parts: a supply system and a control system. The

supply system produces, stores and supplies com-pressed air to the various brake valves in the systemand to any air powered accessories. The control systemis on the downside of an operating valve. The valve isregulating the amount of air going to an actuator or othervalve. Main operating valves are Foot Valve(7), TrailerHand Brake Valve(15) and Dash Manifold Valve(13).They regulate air pressure going to the wheel brakechambers when operated.

Other operating valves outside the brake system conneto the B System Tank(5). A Pressure Protection

Valve(20) protects the brake system from draining,should a problem occur in an accessory supply line. Amain supply line goes to the cab, supplying air to cabcomponents, and to the Accessory Manifold(19), locatein the frame, supplying air to chassis components.

The circuit diagram above shows components for anABS brake system. Components 8 and 9 change de-pending on application and vendor types. See Group 5for more ABS information.

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Group 56 Design and Function

Air Tubing and FittingsThe illustrations starting on page 21 represent the brakesystem as a schematic layout or show actual routing inthe vehicle. Color images A, B and C are schematics ofthe entire brake system. Schematic A shows a 4x2 or6x4 tractor, color image B shows a truck with auxiliaryaxles, and color image C shows a tractor with onepusher. All other illustrations show the brake system

valves and tubing in different sections of the vehicle. Allcolor on tubing and in the schematic layouts conforms tothe standardized color scheme listed to the right.

The tubing in the illustrations is colored the same as theactual tubing in the vehicle. This helps the identificationand troubleshooting process and reduces the possibilityof error.

TUBING COLOR, PRIMARY

BLUE ...................................... Supply System CircuitRED ................................ Front Service Brake CircuitGREEN ............................ Rear Service Brake CircuitORANGE .................................. Parking Brake Circuit

TUBING COLOR, SECONDARY

BLUE (1/4 in.) ...................... Air Suspension ExhaustGREY (1/4 in.) ............................. Diff. Lock, InteraxleGREY (3/8 in.) ........................... Trailer Hand ControlBROWN (1/4 in.) ...................... Diff. Lock, InterwheelYELLOW (1/4 in.) ................ Fifth Wheel Air CylinderYELLOW (3/8 in.) ........ Compressor Supply; ExhaustORANGE (1/4 in.) ................ Bobtail Balance ControlBLACK (1/4 in.) .................. Air Seat; Options Supply

All tubing is made of nylon and sizes are always mea-

sured as an outer diameter (OD). The 1/4inch tubing isa solid core, single-ply extrusion. All other sizes aremade of a solid core, covered with a protective, coloredlayer withfiber reinforcement between the layers. Thecover is treated for heat and sunlight resistance.

W5000379

In areas where greatflexibility is needed, air is routed inrubber hoses, for example, between the frame and theaxles. A hose is comprised of three layers of rubber andreinforcement. Hoses are specifically made for each in-stallation in the correct length with crimped-onfittings oneither end.

W5000384

Fittings are typically of the push-connect type. Connect-ing and disconnecting tubing is very easy, whichsimplifies troubleshooting in the air system. New, simpletest gauges have been introduced for testing the valvesand pressures. See Group 56 for more information.

W5000377

10

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Thefitting body is made of brass. An internal O-ringseals on the outside diameter of the tubing and the re-taining collar holds the tubingfirmly in place. Straightfittings have an internal hex grip; most others have anexternal hex grip. A number of valves also come withpush-type connectors already installed in the valve body.

Thefitting is designed to let the tubing rotate to eliminate

kinks. Thefitting IS NOT designed for locations with con-tinuous movement, such as between frame and axle.Threads are pre-applied with sealant. Afitting can bereused in the same port up tofive times before newsealant needs to be applied.

W5000378

Air Fitting Types Straight, thread to tube. Cyl. threads with O-ring

seal.

Straight, thread to tube. Pipe threads.

Straight, tube to tube.

Straight, tube to tube. Bulkhead (at pedal plate).

Plugs for bulkheadfitting.

90

, thread to tube.

90

, thread to tube. (Hex grip around base).

45

, thread to tube.

Branch Tee, thread to tube and tube.

Branch Tee, thread to tube - tube (Hex grip aroundbase).

Branch Tee, 90

, thread to tube - tube.

Branch Tee, tube to tube - tube.

Run Tee, thread to tube - tube. (Tube 1 - straight;tube 2 - 90

).

Run Tee, thread to tube - tube. (Tube 1 - straight;tube 2 - 90

). (Hex grip around base).

Run Tee, tube to bulkhead to tube - tube. (Used fostoplight switch if vehicle is equipped with brake aplication gauge.)

Air Tubing InstallationTo ensure a tight seal between tubing andfitting, thetubing end needs to be cut straight. Also, inspect tubingthat has been removed forteethmarksaround theperimeter where the retaining collar holds the tubing inplace. If the marks are too deep, that is, can be easilyseen or a depression can be felt by running afingernailacross the mark, recut the tubing before reinstalling.

W5000380

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Installation is done by aligning tubing in a straight linewith thefitting opening. Push until the tubing stopsagainst the bottom of thefitting.

W5000381

When the tubing has bottomed in thefitting, pull back tomake the collar retaining teeth engage the tubing. Donot pull too hard, only enough to ensure that the collarhas gripped the tubing.

W5000382

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Air Tubing Removal

Before working on a vehicle, set the parking brakes,place the transmission in neutral, and block thewheels. Failure to do so can result in unexpectedvehicle movement and can cause serious personal in-

jury or death.

WARNING

Always make sure that all compressed air is removedfrom the air system before removing tubing or compo-nents. Compressed air has great force and can causeserious personal injury.

To make removal easier, remove tubing when valve orcomponent is still in place.

To disconnect, push the tubing into thefitting until it bot-toms. Push in the collar and then pull out tubing whileholding the collar. Use release tool J-42189 for smalltubing and tool J-44773 for tubing with 1/2or 5/8OD.

W5000580

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Air Tubing RepairIn the event that tubing has been severed as a result ofan accident or if tubing needs to be lengthened forrerouting, there are certain procedures that must be fol-lowed.

In general, there are no restrictions on repairing tubingversus replacing it. Repaired tubing has the same in-

tegrity as the rest of the system if the repairs are doneproperly. Tube-to-tubefittings are available for 1/4, 3/8and 1/2-inch tubing.

W5000582

Damage to one tube is repaired so that the repair fittingis close to a bracket for support. Prepare the tubing asoutlined on the previous page. Push the tubing ends intothefitting. Leak testfitting at full pressure after systempressure has been established again.

W5000583

If a whole bundle of tubing needs to be repaired orlengthened, make sure thefittings are staggered insteadof installed at the same length. Put the largerfittingsclose to a bracket for support and the smallerfittings far-ther away.

W5000584

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AirBrakeSystemSch

ematics:SchematicA

-6x4or4x2

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AirBrakeSystemSchematics:SchematicB-A

uxiliaryLiftAxles

W5001220

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1.Compressor

10.ABSModulato

rValve

21.Park/DaytimeRunningLightSwitch

2.Governor

11.FrontBrakeChambers

22.StoplightSwitch

2a.GovernorServoValve

12.Parking/RearBrakeChambers

23.a,b,c.TanksforAuxiliary

Axles1,2or3

3.AirDryer

13.DashManifold

Valve

24.RelayValve

4."Wet"Tank

14.DoubleCheck

ValveANDSpringBrakeRelay

25.b,c.QuickReleaseValve

sforAxles2or3

5."B"Tank(FrontCircuit)

15.SynchroValve

26.a,b,c.BrakeChambersforAuxiliaryAxles

6."A"Tank(RearCircuit)

16.SpringBrakeInversionValve

27.AuxiliaryAxleAirSuspension.SeeGroup76.

6a.AirTank(6x4)

17.LowPressure

Switches

28.DoubleCheckValve

7.FootBrakeValve

18.AirGauges

8.QuickReleaseValve

19.AccessoryManifold

9.ServiceBrakeRelay

20.PressureProtectionValve

Thisschematicdescribestheairb

rakesystem.Allcolors

areastheyappearonthetubinginthevehicle.Compo-

nentsaregroupedtogethersothattheleftportionofthe

schematicrepresentsthefrontofthevehicleandthe

rightportionrepresentstherearofthevehicle.Otherlo-

cationsarenotrepresentativeoftr

uelocationinthe

vehicle.

Usetheschematicfortroubleshootingandunderstanding

theairbrakesystemfunction.Toseparatethesupplyand

operationsystems,theoperations

ystemisshownwith

brokenlines.Inthevehicle,alltubingissolidcolored.

BL

UE

SupplySystemCircuit

RE

D

FrontServiceBrakeCircuit

GR

EEN

RearServiceBrakeCircuit

OR

ANGE

ParkingBrakeCircuit

BR

OWN

TrailerSupplyCircuit/AuxiliaryAxleSup-

ply GR

EY

TrailerHandControlCircuit

SO

LIDlinesindicateSupply.

BR

OKENlinesindicateOperation.

18

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1.Compressor

10.ABSModulato

rValve

19.AccessoryManifold

2.Governor

11.FrontBrakeChambers

20.PressureProtectionValv

e

2a.GovernorServoValve

12.Parking/RearBrakeChambers

21.Park/DaytimeRunningLightSwitch

3.AirDryer

13.DashManifold

Valve

22.StoplightSwitch

4."Wet"Tank

14.RelayValve

23.TankforAuxiliaryAxle

5."B"Tank(FrontCircuit)

15.SynchroValve

24.RelayValve

6."A"Tank(RearCircuit)

16.InversionValve

25.AuxiliaryAxleAirSuspension.SeeGroup76.

7.FootBrakeValve

17.LowPressure

Switches

8.QuickReleaseValve

18.AirGauges

9.ServiceBrakeRelay

Thisschematicdescribestheairb

rakesystem.Allcolors

areastheyappearonthetubinginthevehicle.Compo-

nentsaregroupedtogethersothattheleftportionofthe

schematicrepresentsthefrontofthevehicleandthe

rightportionrepresentstherearofthevehicle.Otherlo-

cationsarenotrepresentativeoftr

uelocationinthe

vehicle.

Usetheschematicfortroubleshootingandunderstanding

theairbrakesystemfunction.Toseparatethesupplyand

operationsystems,theoperations

ystemisshownwith

brokenlines.Inthevehicle,alltubingissolidcolored.

BL

UE

SupplySystemCircuit

RE

D

FrontServiceBrakeCircuit

GR

EEN

RearServiceBrakeCircuit

OR

ANGE

ParkingBrakeCircuit

BR

OWN

TrailerSupplyCircuit

GR

EY

TrailerHandControlCircuit

SO

LIDlinesindicateSupply.

BR

OKENlinesindicateOperation.

20

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Air Brake Routing Schematics

Front Brake Valves

W5001

0To Pedal Valve

2SeeBulkheadpage 22

3SeeFront Section, Battery Box Left Side Behind

Front Fenderpage 23See Front Section, Battery Box Left Side BehindFuel Tankpage 24See Front Section, Battery Box Right Side BehindFront Fender, Muffler Horizontal, Axle Forward, AirTanks Right Sidepage 27

See Front Section, Battery Box Right Side, MufflHorizontal, Air Tanks Left Side (102Wide, 22FuTank or 96Wide, 26Fuel Tank)page 28See Front Section, Battery Box Right Side BehinFront Fender, Muffler Horizontal, Axle Back, AirTanks Right Sidepage 26See Front Section, Battery Box Right Side BehinFront Fender, Muffler Vertical Left/VerticalRight/Vertical Dualpage 25

XTo Governor

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Bulkhead

W5001273

3SeeFront Section, Battery Box Left Side BehindFront Fenderpage 23See Front Section, Battery Box Left Side BehindFuel Tankpage 24See Front Section, Battery Box Right Side BehindFront Fender, Muffler Horizontal, Axle Forward, AirTanks Right Sidepage 27See Front Section, Battery Box Right Side, MufflerHorizontal, Air Tanks Left Side (102Wide, 22Fuel

Tank or 96Wide, 26Fuel Tank)page 28

See Front Section, Battery Box Right Side BehindFront Fender, Muffler Horizontal, Axle Back, AirTanks Right Sidepage 26See Front Section, Battery Box Right Side BehindFront Fender, Muffler Vertical Left/VerticalRight/Vertical Dualpage 25

22

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Front Section, Battery Box Left Side Behind Front Fender

W5001

1

SeeFront Brake Valvespage 212See Bulkheadpage 22

4

See Middle Section, No Pusherspage 32SeeMiddle Section, 8x4, Two Driven Axles, OnePusher Axle or 6x2, One Driven Axle, One PusheAxlepage 31See Middle Section, 10x4, Two Driven Axles, TwPusher Axlespage 30See Middle Section, 12x4, Three Pusher Axles,Two Driven Axlespage 29

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Front Section, Battery Box Left Side Behind Fuel Tank

W5001275

1SeeFront Brake Valvespage 21

2See Bulkheadpage 22

4See Middle Section, No Pusherspage 32SeeMiddle Section, 8x4, Two Driven Axles, One

Pusher Axle or 6x2, One Driven Axle, One PusherAxlepage 31See Middle Section, 10x4, Two Driven Axles, TwoPusher Axlespage 30See Middle Section, 12x4, Three Pusher Axles,Two Driven Axlespage 29

24

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Front Section, Battery Box Right Side Behind Front Fender, Muffler Vetical Left/Vertical Right/Vertical Dual

W5001276



4See Middle Section, No Pusherspage 32SeeMiddle Section, 8x4, Two Driven Axles, OnePusher Axle or 6x2, One Driven Axle, One PusheAxlepage 31See Middle Section, 10x4, Two Driven Axles, TwPusher Axlespage 30See Middle Section, 12x4, Three Pusher Axles,Two Driven Axlespage 29

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Front Section, Battery Box Right Side Behind Front Fender, MufflerHorizontal, Axle Forward, Air Tanks Right Side

W5001


4See Middle Section, No Pusherspage 32SeeMiddle Section, 8x4, Two Driven Axles, OnePusher Axle or 6x2, One Driven Axle, One PusheAxlepage 31See Middle Section, 10x4, Two Driven Axles, TwPusher Axlespage 30See Middle Section, 12x4, Three Pusher Axles,Two Driven Axlespage 29

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Front Section, Battery Box Right Side, Muffler Horizontal, Air Tanks LeftSide (102Wide, 22Fuel Tank or 96Wide, 26Fuel Tank)

W5001286

0To Pedal Valve



4See Middle Section, No Pusherspage 32SeeMiddle Section, 8x4, Two Driven Axles, OnePusher Axle or 6x2, One Driven Axle, One PusherAxlepage 31See Middle Section, 10x4, Two Driven Axles, TwoPusher Axlespage 30See Middle Section, 12x4, Three Pusher Axles,Two Driven Axlespage 29

6To Air Dryer

7To Battery Box

XTo Governor

28

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Middle Section, 12x4, Three Pusher Axles, Two Driven Axles

W5001279

3SeeFront Section, Battery Box Left Side BehindFront Fenderpage 23See Front Section, Battery Box Left Side BehindFuel Tankpage 24See Front Section, Battery Box Right Side BehindFront Fender, Muffler Horizontal, Axle Forward, AirTanks Right Sidepage 27See Front Section, Battery Box Right Side, Muffler

Horizontal, Air Tanks Left Side (102Wide, 22FuelTank or 96Wide, 26Fuel Tank)page 28See Front Section, Battery Box Right Side BehindFront Fender, Muffler Horizontal, Axle Back, AirTanks Right Sidepage 26See Front Section, Battery Box Right Side BehindFront Fender, Muffler Vertical Left/VerticalRight/Vertical Dualpage 25

5See Truck, Volvo Suspensionpage 33See Truck, Hendrickson A4H Suspensionpage See Truck, Hendrickson HN/RT Suspensionpag34

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Middle Section, 10x4, Two Driven Axles, Two Pusher Axles

W5001280

3SeeFront Section, Battery Box Left Side BehindFront Fenderpage 23See Front Section, Battery Box Left Side BehindFuel Tankpage 24See Front Section, Battery Box Right Side BehindFront Fender, Muffler Horizontal, Axle Forward, Air

Tanks Right Sidepage 27See Front Section, Battery Box Right Side, MufflerHorizontal, Air Tanks Left Side (102Wide, 22FuelTank or 96Wide, 26Fuel Tank)page 28See Front Section, Battery Box Right Side BehindFront Fender, Muffler Horizontal, Axle Back, AirTanks Right Sidepage 26See Front Section, Battery Box Right Side BehindFront Fender, Muffler Vertical Left/VerticalRight/Vertical Dualpage 25

5See Truck, Volvo Suspensionpage 33See Truck, Hendrickson A4H Suspensionpage 35See Truck, Hendrickson HN/RT Suspensionpage34

30

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Middle Section, 8x4, Two Driven Axles, One Pusher Axle or 6x2, OneDriven Axle, One Pusher Axle

W5001281

3SeeFront Section, Battery Box Left Side BehindFront Fenderpage 23See Front Section, Battery Box Left Side BehindFuel Tankpage 24See Front Section, Battery Box Right Side BehindFront Fender, Muffler Horizontal, Axle Forward, AirTanks Right Sidepage 27See Front Section, Battery Box Right Side, MufflerHorizontal, Air Tanks Left Side (102Wide, 22FuelTank or 96Wide, 26Fuel Tank)page 28See Front Section, Battery Box Right Side BehindFront Fender, Muffler Horizontal, Axle Back, AirTanks Right Sidepage 26See Front Section, Battery Box Right Side BehindFront Fender, Muffler Vertical Left/VerticalRight/Vertical Dualpage 25

5See Truck, Volvo Suspensionpage 33See Truck, Hendrickson A4H Suspensionpage See Truck, Hendrickson HN/RT Suspensionpag34

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Middle Section, No Pushers

W5001160

3SeeFront Section, Battery Box Left Side BehindFront Fenderpage 23See Front Section, Battery Box Left Side BehindFuel Tankpage 24

See Front Section, Battery Box Right Side BehindFront Fender, Muffler Horizontal, Axle Forward, AirTanks Right Sidepage 27See Front Section, Battery Box Right Side, MufflerHorizontal, Air Tanks Left Side (102Wide, 22FuelTank or 96Wide, 26Fuel Tank)page 28See Front Section, Battery Box Right Side BehindFront Fender, Muffler Horizontal, Axle Back, AirTanks Right Sidepage 26See Front Section, Battery Box Right Side BehindFront Fender, Muffler Vertical Left/VerticalRight/Vertical Dualpage 25

5See Truck, Volvo Suspensionpage 33See Truck, Hendrickson A4H Suspensionpage 35See Truck, Hendrickson HN/RT Suspensionpage34

32

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Truck, Volvo Suspension

W5001

4See Middle Section, No Pusherspage 32

SeeMiddle Section, 8x4, Two Driven Axles, OnePusher Axle or 6x2, One Driven Axle, One PusherAxlepage 31See Middle Section, 10x4, Two Driven Axles, TwoPusher Axlespage 30See Middle Section, 12x4, Three Pusher Axles,Two Driven Axlespage 29

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Truck, Hendrickson HN/RT Suspension

W5001282

4See Middle Section, No Pusherspage 32SeeMiddle Section, 8x4, Two Driven Axles, OnePusher Axle or 6x2, One Driven Axle, One PusherAxlepage 31See Middle Section, 10x4, Two Driven Axles, TwoPusher Axlespage 30See Middle Section, 12x4, Three Pusher Axles,Two Driven Axlespage 29

34

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Truck, Hendrickson A4H Suspension

W5001

4See Middle Section, No Pusherspage 32SeeMiddle Section, 8x4, Two Driven Axles, OnePusher Axle or 6x2, One Driven Axle, One PusherAxlepage 31

See Middle Section, 10x4, Two Driven Axles, TwPusher Axlespage 30See Middle Section, 12x4, Three Pusher Axles,Two Driven Axlespage 29

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PV776-TSP144276