Volvo Group 655-601 User manual

Service Manual
Trucks
Group 655-601
Rear Suspension, T-Ride
VN, VHD
PV776-TSP142921

Foreword
The descriptions and service procedures contained in this manual are based on designs
and methods studies carried out up to July 2003.
The products are under continuous development. Vehicles and components produced
after the above date may therefore have different specifications and repair methods.
When this is believed to have a significant bearing on this manual, supplementary
service 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
reference to an V.S.T. (Volvo Standard Times).
Service procedures which do not include an operation number in the title are for general
information and no reference is made to an V.S.T.
The following levels of observations, cautions and warnings are used in this Service
Documentation:
Note: Indicates a situation, handling or circumstance which should be observed.
Caution: Indicates a potentially hazardous situation which, if not avoided, may result in
minor or moderate injury or damage to property.
Warning: Indicates a potentially hazardous situation which, if not avoided, could result
in death, serious injury or major damage to property.
Danger: Indicates an imminently hazardous situation which, if not avoided, will result in
death or serious injury.
Volvo Trucks North America, Inc.
Greensboro, NC USA
Order number: PV776-TSP142921
© 2003 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,
mechanical, photocopying, recording or otherwise, without the prior written
permission of Volvo Trucks North America, Inc.. USA08313

Contents
General..................................................................................................3
RearSuspension.................................................................................3
Specifications.......................................................................................5
SuspensionApplications......................................................................5
VHD...................................................................................................5
TighteningTorques..............................................................................6
AxlePinionAngles...............................................................................7
VN......................................................................................................7
Tools......................................................................................................9
SpecialTools........................................................................................9
OtherTools..........................................................................................10
DesignandFunction...........................................................................11
RearSuspension.................................................................................11
BogieBracket(SaddleBracket)...........................................................12
SpringCradle(CradleAssembly)........................................................12
NylonBushings....................................................................................12
ParabolicSpringLeaves......................................................................13
RubberSprings....................................................................................13
V-StayTorqueRods.............................................................................13
ReactionRod(LowerTorqueRod).......................................................13
V-StayTorqueRodFrameBracket......................................................14
RubberSpringBracket.........................................................................14
RubberSpringPlate............................................................................14
LowerReactionRodBracketandShockBracket................................14
Troubleshooting...................................................................................17
RearSuspensionTroubleshooting.......................................................17
VolvoT-Ride......................................................................................17
ServiceProcedures.............................................................................19
ServiceProcedure.................................................................................19
GuidelinesforWorkingontheVolvoT-RideSuspension....................19
VTorqueRod,Replacement................................................................21
Torque/RadiusRod,Lower,Replacement...........................................23
BogieAnchorageAssembly,Replacement..........................................25
VTorqueRodAnchorage,Replacement.............................................28
SpringAssembly,RearLeaf,RemovalandInstallation.......................30
RearSpringLeaf,Replacement..........................................................33
RubberSpring,Replacement(Each)...................................................35
RearSpringRetainingBolt,Replacement...........................................38
Tandem,Alignment..............................................................................40
Cradle,Replacement...........................................................................41
GreaseSeals,Replacement................................................................45
CradleBearing,Lubrication.................................................................46
PermanentFastener,Removal............................................................47
1

2

Group 72 General
General
Rear Suspension
W6001356
Fig. 1: T-Ride Tandem Suspension
The Volvo T-Ride tandem suspension is designed for use in both on-and off-highway
applications. It offers maximum articulation for maximum traction. The following
information covers specifications, operations, torque values, lubrication, alignments, and
service procedures for repair and maintenance of the Volvo T-Ride Tandem Suspension.
3

4

Group 72 Specifications
Specifications
Suspension Applications
VHD
Capacity (lb) 48,000 52,000 58,000 65,000 70,000
Volvo Axle CTEV87,
RT2610HV CTEV87, RT2610HV RT2610HV, RT3210HV RT3210HV RT3210HV
Meritor (Rockwell) Axle Not Available Not Available Not Available Not Available Not Available
Dana (Eaton) Axle Not Available Not Available Not Available Not Available Not Available
Load Distribution 50/50 50/50 50/50 50/50 50/50
Springs - Type Parabolic/
Multileaf Parabolic/ Multileaf Parabolic/ Multileaf Multileaf Multileaf
Number of Leaves 3/9 3/11 3/9/11 9/11 9/11
5

Group 72 Specifications
Nm ft-lb
U-bolt nuts (sizes will vary) (do not re-use U-bolt nuts) 500 ± 75 369 ± 55
Cradle hubcap bolts 20 ± 5 15 ± 4
Lower torque rod bolt nuts to saddle bracket 220 ± 35 162 ± 26
Lower torque rod bolt nuts to axle bracket 320 ± 50 236 ± 37
V Torque rod nuts to axle housing 310 ± 50 228 ± 37
V Torque rod bolts to chassis bracket 320 ± 50 236 ± 37
Bogie bracket bolt nuts to chassis 320 ± 50 236 ± 37
Rubber spring bolts M14 to axle housing, VOLVO Axles 140 ± 25 103 ± 18
Rubber spring bolts M14 to axle housing, (Rockwell) (Eaton) Axles 200 ± 30 148 ± 22
Bottom spring plate bolts M12 to rubber spring 85 ± 15 63 ± 11
U-bolts to torque rod bracket on axle (do not re-use U-bolt nuts) 200 ± 25 148 ± 18
Bracket for V Torque rod bolt nuts to frame 320 ± 50 236 ± 37
Axle stop bolt nuts to frame (1) 140 ± 25 103 ± 18
Shock bracket to frame 200 ± 30 148 ± 22
Lower shock bracket to spacer on axle 320 ± 50 236 ± 37
Shock to frame mounted bracket 220 ± 35 162 ± 26
Shock to lower bracket 85 ± 15 63 ± 11
Tightening Torques
(1) These may be HUCKBOLT®, and if so, there is no
torque value given as HUCKBOLT®are unserviceable.
6

Group 72 Specifications
Axle Pinion Angles
VN
Axle Variant 1st Axle 2nd
Axle
Volvo Axle 3

11

Meritor (Rockwell) Axle 3

11.5

Dana (Eaton) Axle 3

10

7

8

Group 72 Tools
Tools
Special Tools
The following special tools can be used when working on
the T-Ride Tandem Suspension.
Volvo Tool 999–2337 (Pry Bar) can be used to remove
seals, bearings, thrust washers and other items.
W6001361
Volvo Tool 998–8185 (Snap-Ring Pliers) are used for
removing and installing snap rings.
Note: Protective eye wear should be worn when removing
snap rings.
W6001359
Snap-On Tool A173 can be used to remove the inner
thrust washer and other items.
W6001360
9

Group 72 Tools
Other Tools
The following tools can be used to ensure proper
inclinations or angles for axles on the Volvo T-Ride:
The Anglemaster is a digital inclinometer, available from
Dana-Spicer (Telephone: [phone]).
W7000250
The J–38460–A is a digital protractor, available from
Kent-Moore (Telephone: [phone]).
W7000708
The J–38460–25 may be used along with the Kent-Moore
digital protractor or the Dana Spicer digital inclinometer
for checking pinion angles. It is available from Kent-Moore
(Telephone: [phone]).
W7000726
The J–36795 are tandem axle calipers, available from
Kent-Moore (Telephone: [phone]).
W0001985
10

Group 72 Design and Function
Design and Function
Rear Suspension
The VOLVO T-Ride Tandem Suspension is designed for use in both on-and off-highway
applications. It offers maximum atriculation for traction. The parabolic tapered spring
leaves are mounted upside-down outside the frame rails. The ride is further enhanced
by rubber cushions bolted to the end of each spring resting on the respective rear axle.
These cushions absorb shock and vibration.
The suspension features eight torque rods that help maintain the rear axle alignment.
Four of the rods are installed on top of the rear axles in an opposite “V” pattern. These
“V” torque rods anchor the rear axles to the frame, while distributing and maintaining
laterally transmitted forces, as well as any starting and braking torques. The four lower
torque rods also transfer starting and braking torques from the rear axles to the frame.
W6001331
11

Group 72 Design and Function
Bogie Bracket
(Saddle Bracket)
The Bogie Bracket assembly (saddle bracket) provides
stability for lateral movement and serves as an anchor for
the spring cradle and the parabolic spring assembly. It
helps maintain maximum articulation of the suspension
as well as durability. The Bogie Bracket plays a key role
axially as well as radially.
W6001336
Spring Cradle
(Cradle Assembly)
The spring cradle (cradle assembly) provides maximum
atriculation for the suspension. The spring cradle
functions axially as well as radially while riding on the
trunnion tube in the Bogie Bracket. The axial play in the
cradle is preset by the depth of the trunnion tube in the
Bogie Bracket (saddle). The spring cradle also contains
two nylon bushings which contain journals for lubricating
the assembly.
W6001340
Nylon Bushings
The nylon bushings serve as journals for lubrications both
axially and radially. They are essential in maintaining life
and serviceability of the spring cradle and trunnion tube.
The nylon bushings help to simplify servicing the spring
cradle.
Note: Nylon bushings should be replaced in pairs.
W6001339
12

Group 72 Design and Function
Parabolic Spring Leaves
The parabolic spring leaves are mounted upside down
and outside of the frame rails. They are fastened to the
spring cradle and provide the lightweight suspension with
excellent ride characteristics. This design contributes to
axle flexibility while maintaining contact to the ground for
pulling power.
Note: When replacing Parabolic Spring Leaves, the
leaves on both sides should be replaced. When replacing
the leaves also ensure that the leaves are marked with
the same Camber Settings (+ or
0 ).
W6001341
Rubber Springs
The rubber springs support the leaf spring assembly and
contribute to a flexible and comfortable ride. The rubber
springs allow for minimum wear on the suspension by
absorbing a considerable amount of shock and vibration
for the suspension.
W6001343
V-Stay Torque Rods
The V-Stay torque rods distribute movement and keep the
axles in place. They are fastened from the inner frame
rails and to the top of the axle housings. They distribute
and maintain laterally transmitted forces, as well as any
starting or braking torques. The outer joints of the V-Stay
torque rods are maintenance free. W6001334
Reaction Rod
(Lower Torque Rod)
There are four lower torque rods and they are used to
distribute starting and braking forces. The outer joints
are also maintenance free. The axle pinion angle can be
controlled by the reaction rods. W6001335
13

Group 72 Design and Function
V-Stay Torque Rod Frame
Bracket
The V-Stay torque rod frame bracket is used to mount
the V-Stay torque rod to the frame. It is marked with top
and forward arrows to make for proper installation. This
bracket supplies a secure anchor for the V-Stay torque
rod to the frame.
W6001322
Rubber Spring Bracket
The rubber spring bracket is found on top of the axle
housing at the flanged end of the axle shaft. It is held in
place with U-bolts and the lower reaction rod bracket. The
rubber spring bracket provides a solid mounting surface
for the rubber springs, which is essential to the alignment
of the leaf spring assembly with the rubber spring. W6001337
Rubber Spring Plate
The rubber spring plate is used to fasten the lower leaf
spring to the rubber springs. The rubber spring plate is
important because it keeps the leaf springs in alignment
with the rubber springs. W6001342
Lower Reaction Rod Bracket
and Shock Bracket
The reaction rod bracket provides a fixed location for
the reaction rod to mount directly to the axle, as well as
mounting the shock to the axle. This allows for proper
positioning of those components leading to correct axle
pinion angles and alignment.
W6001338
14

Group 72 Design and Function
W6001328
Bogie Bracket and Cradle Assembly
15

Group 72 Design and Function
W7000091
3Saddle Bracket
8Cradle
14 Wear Ring
15 Grease Seal
16 Grease Seal
17 Nylon Bushing
19 Outer Thrust Washer
20 Inner Thrust Washer
21 Snap Ring
22 Gasket
23 Hub Cab
24 Retaining Ring
25 Relief Valve
26 Trunnion Tube
27 Roll Pin
28 Roll Pin
29 Plug
30 Plug
31 Grease Fitting
Cross-Section View of Cradle and Saddle Bracket
16