Bodywork attachment - Scania Group

Bodywork attachment
Terminology explanations
1

2

3

4

5

76

425

449

1. Hole for attachment screw.2. Hole for fastening screw.3. Subframe bracket.4. Chassis frame bracket.5. Attachment screw with lock nut and washer.6. Retaining screw with lock nut and washer, with flexible attachment.7. Retaining screw with lock nut and washer, with rigid attachment.

Terminology explanationsTo describe the different terms that appear in this document, an example of an attach-ment is shown here.

The attachment involves fitting body adaptation brackets to chassis frames and sub-frames.

Attachment refers to fitting of the bodywork to the truck.

A flexible attachment allows a certain movement longitudinally and/or upwards and, in some cases, downwards. The opposite is a rigid attachment, which means that the bracket is secured using a screw joint and weld joint.

The illustrations show how flexible or rigid attachments can be achieved for the same parts by creating different distances between the chassis frame bracket and subframe bracket.

Scania Truck Bodybuilder 22:10-693 Issue 5 2020-04-01© Scania CV AB 2020, Sweden 1 (26)

General information

Bodywork attachment

More information can be found in the following documents:• Selecting the subframe and attachment• Comounting with Scania components• Body adaptation brackets and hole pattern

More information is found in the document for the respective application.• Example of a search term: Box trucks.

Further information about tightening torque is available in the Screw joint docu-ment.

General information IMPORTANT!

Check attachment screws and retaining screws once a year on all body adaptation brackets. Retighten the screws if necessary.

IMPORTANT!

All screws that have been removed when attaching the chassis frame or subframe must be renewed with corresponding new screws.

The following screws must be used when attaching and fastening:

• Attachment screw, M14, strength class 10.9.• Retaining screw, M16, strength class 8.8.

Body adaptation brackets are used as a system for attachment of the bodywork. De-pending on how different types of body adaptation brackets are combined, the de-sired properties ranging from rigid to flexible attachment can be achieved.

Chassis frame brackets and subframe brackets can be ordered factory fitted or pur-chased separately for retrofitting by the bodybuilder. If the bodybuilder manufac-tures brackets, Scania's requirements for design and material properties must be followed.


General information

Bodywork attachment

Body adaptation bracket propertiesBody adaptation bracket characteristics apply to both chassis frame brackets and sub-frame brackets. The properties are a requirement for in-house manufactured body ad-aptation brackets. Scania’s body adaptation brackets have the following properties:

• Scania’s angle brackets are bent without any reinforcement, which gives a certain flexibility upwards and downwards.

• The angle brackets have a bend radius of 8 mm and are angled at 90°.• Body adaptation brackets are manufactured from hot-rolled steel. The yield point

is 500 MPa and the ultimate tensile strength is 550 – 700 MPa.• Body adaptation brackets are made of an 8 ± 0.1 mm thick steel plate.• Mounting holes for the chassis frame and subframe have a diameter of 14.8 mm.• Mounting holes in angle brackets are oval.

Surface treatment of in-house manufactured body adaptation brackets must be car-ried out in accordance with the document Painting chassis-related components.


General information

Bodywork attachment

363 4

88

1

3

2

Example of a co-mounted body adaptation bracket.1. Body adaptation bracket.2. Frame side member.3. Mudguard bracket.

Use pre-drilled holesAs far as possible, use pre-drilled hole patterns. If it is necessary to make additional holes in the chassis frame, Scania’s instructions must be followed.

More information can be found in the document Drilling holes in the chassis frame.

Prepared space for body adaptation bracketScania strives to leave the upper row of holes on the frame side members free so that the body adaptation brackets can be placed with optimum spacing. If a chassis com-ponent uses one of the upper holes, it is comounted with a spacer. The spacer has the same thickness as the Scania body adaptation brackets and can be replaced by a bracket if necessary.

IMPORTANT!

If the spacer is replaced with your own body adaptation bracket, the bracket thickness must be 8 ± 0.1 mm. If the tolerance is exceeded, there is a risk of damage to the co-mounted chassis component option or it may loosen from the vehicle.


General information

Bodywork attachment

mm) Distance between holes (mm)-50

363 4

89

Part informationDesignation Part number Hole diameter (mm) Thickness (Spacer with one hole 2 323 969 15.5 8Spacer with 2 holes 2 324 674 15.5 8


Chassis frame brackets

Bodywork attachment

M PKH J R Q

421

457

Chassis frame brackets.

Chassis frame bracketsAngle brackets, see illustration:

• H (part number 2 751 553).• J (part number 2 283 874).• K (part number 2 811 600).• R (part number 2 289 614).

Plate brackets, see illustration:

• M (part number 2 283 877).• P (part number 2 283 876).• Q (part number 2 302 721).



Bodywork attachment

6042

JH KR

1

2

425

450

1. Hole for attachment screw.2. Hole for fastening screw.

Angle brackets for chassis frameChassis frame brackets H, J and K go on the subframes and chassis frame bracket R ends at the upper edge of the chassis frame.

The hole for the attachment screw (1) is oval. Bracket H har 3 hål, J has a single hole, K and R has 2 holes for M16 bolts.

The parts are available from Scania dealers.

Part informationBracket Part number Attachment in the chassis frameH 2 751 553 4 x M14 screwJ 2 283 874 2 x M14 screwsK 2 811 600 3 x M14 screwsR 2 289 614 3 x M14 screws



Bodywork attachment

102

23

50 235023

35,5

60

2x 18

5048

6023

50 235023

60

2x 18

50

35,5

48

2x 2

5

Ø 14,8

Ø 2x14,2

2x 2

5

Ø 14,8

Ø 2x14,2 R

421

458

Dimensions of the chassis frame angle bracketsIf bodywork adaptation brackets are manufactured by the bodybuilder, it is important that Scania's design specifications are met.

102

2335

,560 25

18

50 2323

3x18

102

23

50 2350 5023

505048 48

Ø 14,2

3962

Ø 14,2

Ø 14,2

Ø 2x14,8

3x 2

5

JH K



Bodywork attachment

Attachment in the chassis frame3 x M14 screws3 x M14 screws5 x M14 screws

5060

70

M P Q

421

316

Plate brackets for chassis frame

Part information

The parts are available from Scania dealers.

Bracket Part number Attachment in subframeM 2 283 877 3 x M14 screwsP 2 283 876 WeldedQ 2 302 721 Welded



Bodywork attachment

3x Ø14,8 5x Ø14,8

24

2x R

20

2x 20o

249014

415

4

2x R65

2x 20o

24 50 50 2450 50

Q

421

331

Dimensions of the chassis frame flat brackets If bodywork adaptation brackets are manufactured by the bodybuilder, it is important that Scania's design specifications are met.

24 2450

24

50

2411

0

24 50 50

249014

415

4

2x R65

2x R

20

6x Ø14,8

M P


Subframe brackets

Bodywork attachment

1 2 3 4

425

451

Subframe brackets.

12

368 6

63

1. Hole for attachment screw.2. Hole for retaining screw.

Subframe bracketsAngle brackets are designated by part number, see illustration:

1. 2 441 445.2. 2 441 446.3. 2 441 469.4. 2 441 470.

Angle brackets for subframeThe brackets can either have 1, 2 or 3 attachment holes to the chassis frame bracket.

The vertical positioning of the subframe bracket depends on the type of chassis frame bracket and the type of attachment selected.


Subframe brackets

Bodywork attachment

1 23 4

421

459

Part informationPos. Part number Attachment in sub-

frameCombined with the bracket for the chassis frame

Number of at-tachment holes

1 2 441 445 2 x M14 screws J 12 2 441 446 3 x M14 screws K, R 23 2 441 469 Welded J 14 2 441 470 Welded K, R 2


Subframe brackets

Bodywork attachment

35,5

60 35,5

60

3070

9 2x 9

16,5

30

2237 378729,5 29,5

50

3070 30

16,5

2x 22

4

421

460

Dimensions of the subframe angle bracketsIf the body adaptation brackets are manufactured by the bodybuilder, it is important to follow Scania’s design requirements.

2x Ø 14,8

35,5

6053

18

35,5

6053

18

9 2x 9

16,5

16,5

5023 23 5023 2350

2x Ø 14,8

50

1 2 3


Attachment types

Bodywork attachment

75 62 41 3

1. Flexible attachment upwards and downwards.2. Flexible attachment upwards and longitudinally, with spring.3. Flexible attachment upwards and longitudinally, with rubber bushes.4. Flexible attachment longitudinally.5. Rigid attachment with angle bracket.6. Rigid attachment with plate bracket, which is screwed into the subframe.7. Rigid attachment with plate bracket, which is welded into the subframe.

Attachment typesThe design of the angle brackets provides the attachment with a certain vertical flex-ibility. Flexible attachment can be achieved in different ways. This document shows 4 different alternatives, see illustration.

Rigid attachment can be achieved in several ways. This document shows 3 different alternatives, see illustration.

More information about body adaptation brackets is available under the heading Properties of body adaptation brackets.


Attachment types

Bodywork attachment

Flexible attachmentNote:In the case of flexible attachment, the maximum permitted tightening torque is 25 Nm for M16 screws with strength class 8.8.

Note:Ensure lateral control/stabilisation. The higher chassis frame brackets go on the sub-frame and stabilise lateral movement. When using a low chassis frame bracket, the attachment must be supplemented with at least one bracket per side for lateral stabi-lisation.

The higher chassis frame brackets that go on the subframe stabilise lateral move-ment. More information about high and low chassis frame brackets is available under the heading Chassis frame angle brackets.

Flexible attachment upwards and longitudinallyFit the angle brackets one vertical distance from each other; see illustration. This is to allow movement longitudinally and a certain upward movement from the chassis frame. 10 ± 5 mm is a suitable vertical distance between the brackets. The attachment must consist of a coil spring with spring disc, rubber pad or cup spring which allows for upward movement.


Attachment types

Bodywork attachment

M16

M14

363 4

78

105

Example of the attachment with springs.

Attachment with springsNote:A distance of 10 ± 5 mm between the brackets must be maintained after the attach-ment screw with spring is fitted.

Use retaining bolt M16, strength class 8.8 with a lock nut and spring disc. The spring disc must have a thickness of at least 6 mm and be used on both sides of the spring. Retaining bolt M14 with strength class 10.9 must be used if all parts are adapted for it.

The coil spring must have a spring constant between 140 and 145 N/mm. The thread thickness should be 8 mm with at least 8 active revolutions and a unloaded length of at least 100 mm.

The spring disc should be appropriate for the coil spring’s properties.

Proceed as follows:

1. Tighten the retaining screws on all brackets so that the spring is fully compressed without the brackets being deformed or the tightening torque exceeding 25 Nm.

2. Release the retaining screw 15 mm on the front bracket.3. Unscrew the attachment screws 10 mm in the second bracket.4. Unscrew the attachment screws 5 mm in the third bracket.


Attachment types

Bodywork attachment

Part information

More information about screws and nuts is available under the heading Screws.

Designation Part numberSpring disc 2 493 626Spring 2 493 627


Attachment types

Bodywork attachment

M16

M14

382 9

48

105

Attachment with rubber bushings.

Attachment with rubber bushingsNote:A distance of 10 ± 5 mm between the brackets must be maintained after the attach-ment screw with rubber bushing is fitted.

Use retaining bolt M16, strength class 8.8 with lock nut and washer. The washer must have an outer diameter of 40 mm and a thickness of at least 6 mm. A washer must be used on both sides of the rubber bush. Retaining bolt M14 with strength class 10.9 must be used if all parts are adapted for it.

The rubber bush should be 40 mm high with maximum permissible hardness 80 shore. The rubber bushing must be 40 mm in outer diameter, with an inner diameter of 17 mm.

Proceed as follows:

Tighten the retaining screw until the rubber bush has been compressed by 4 mm with-out the tightening torque exceeding 25 Nm.

For vehicles with frame strength level 1, attachment with only one M16 screw per bracket can be considered.


Attachment types

Bodywork attachment

Part information

More information about screws and nuts is available under the heading Screws.

Designation Part numberRubber bushing 2 493 625Washer 345 642


Attachment types

Bodywork attachment

502360

max 24 max 2450 50 50

1

2 33241

4

363 4

79

Example of how a flexible attachment can be created:1. Square profile with rigid attachment in chassis frame.2. Metal profile piece attached to bodywork.3. Rubber element that allows downward movement. Maximum permitted hardness

70 shore.4. Rubber element that allows upward movement. Maximum permitted hardness 40

shore.

Flexible attachment upwards and downwardsFit flexible brackets that allow the bodywork to move upwards and, to a certain ex-tent, downwards towards the chassis frame. There are different ways of makinf the attachments, e.g. with steel springs or rubber bushes. Flexible brackets must be ca-pable of withstanding a load of 2,200 kg each.

Sometimes the front body adaptation bracket may need to be placed behind the rec-ommended area. If this is the case, reinforce the chassis frame at the front bracket or make a bracket with large contact surface against the chassis frame on single frame trucks. This reduces the risk of frame oscillation.

More information on attachment with a large contact surface against the chassis frame is available in the document Bulk tankers.

The maximum permitted centre distance between the body adaptation brackets is 1,500 mm. Place the body adaptation brackets in connection with the spring brackets or chassis cross-members. There are exceptions for e.g. refuse collection trucks.

More information about exceptions when positioning body adaptation brackets is available in the document Refuse collection trucks.


Attachment types

Bodywork attachment

M16M16

105

409 0

84

Longitudinally flexible attachment with angle bracketsNote:A distance of 10 ± 5 mm between the brackets must be maintained after the attach-ment screw has been fitted.

To permit longitudinal movement, angle brackets are fitted with a vertical distance between them. Suitable measurement between the brackets is 10 ±5 mm.

Use retaining bolt M16, strength class 8.8 with lock nut and washer. A washer should be used at the screw head and lock nut and it should be at least 6 mm thick. Retaining bolt M14 with strength class 10.9 must be used if all parts are adapted for it.

The aim of tightening torque not exceeding 25 Nm is to allow a longitudinal move-ment between the chassis frame and subframe. Excessive tightening torque counter-acts the attachment type's purpose and the brackets will deform.


Attachment types

Bodywork attachment

363 4

90

Attachment with spring clipsNote:Fastenings with spring clips must always be approved by Scania.

More information about the bodybuilder's responsibility when fitting with spring clips is available in the following document:

• Use and responsibility.• Declaration of conformity.

Fastening with spring clips or U-bolts is not recommended by Scania for the fitting of subframe or components to the chassis frame, see illustration.

In certain cases it may still be necessary to use this type of fastening. In such a case, follow the points below to ensure the fastening is carried out correctly.

• Reinforce the inside of the chassis frame with spacers to prevent local deforma-tions, mostly in the flanges. The spacers must be kept in place with suitable guides. Welding is not permitted as this will weaken the chassis frame.

• The spacers must be designed in such a way that they do not expose the chassis frame to chafing. Use separator inserts to reduce the risk of chafing damage.

• As spring clips allow large movements between the chassis frame and subframe, they must be supplemented with lateral control.

• Always use at least 2 rigid brackets per side on the rear part of the chassis frame.• The distance between the centres of the spring clips should be a maximum of 900

mm.


Attachment types

Bodywork attachment

M16

368 6

59

Rigid attachment with flat bracket welded to the subframe.

409 0

15

Rigid attachment with the angle brackets that are screwed into the subframe.

Rigid attachment Use M16 retaining screws, strength class 8.8.

Rigid attachment with angle bracketsTo obtain a rigid attachment with angle brackets, the chassis frame and subframe an-gle brackets must fit tightly together. They must align vertically and horizontally.

To ensure the subframe rests against the chassis frame and to facilitate the subframe manufacturing process, a space between the angle brackets is allowed. The space must be filled with a spacer or separator insert.

Use retaining bolt M16, strength class 8.8 with lock nut and washer. A washer should be used at the screw head and lock nut and it should be at least 6 mm thick.

The subframe bracket can be screwed or welded in.


Attachment types

Bodywork attachment

409 2

22

Rigid attachment with flat bracket.

Rigid attachment with flat bracket that is screwed to the sub-frameUse a M14 retaining screw, strength class 10.9, with lock nut and washer. A washer should be used at the screw head and lock nut and it should be at least 6 mm thick.


Attachment types

Bodywork attachment

2

1

≥30

≥20

421

080

Welded rigid bracket.

Rigid attachment with flat bracket that is welded

IMPORTANT!

Welding should be carried out in a professional manner. Weld continuously without interruption, otherwise there is a risk of crack formation. If necessary, it is only per-missible to break and restart the weld joint in the central part of the weld joint (2). Other weld joints (1) must be continuous.

Note:To avoid the risk that the end points of the weld joint end up in areas of high stress, the weld must start and end as follows:• At least 30 mm from the lower edge of the subframe.• At least 20 mm in front of and behind the bracket.

More information on welding can be found in the document Welding in the chassis frame.


Part information screws

Bodywork attachment

Strength Use10.9 Attachment screw for body adaptation bracket on

vehicles with single frame.10.9 Attachment screw for body adaptation bracket on

vehicles with double frame.10.9 Counterhold screw for body adaptation bracket on

vehicles with single frame.10.9 Counterhold screw for body adaptation bracket on

vehicles with double frame.8.8 Retaining screw, for flexible attachment vertically

and longitudinally with spring 8.8 Retaining screw, for flexible attachment vertically

and longitudinally with rubber bush8.8 Retaining screw, for flexible attachment longitudi-

nally8.8 Retaining screw, for rigid attachment10 -8 -300-370 HV For attachment screw.

15 mm inner diameter, 28 mm outer diameter.200-300 HV For retaining screw.

17 mm inner diameter, 29 mm outer diameter.

Part information screwsDifferent screws are used for different brackets for securing and attaching. The vehi-cle comes factory fitted with a counterhold screw attached to the chassis frame. Sca-nia recommends that the following bolts are used:

Designation Part number Length (mm)M14 screw. 815 933 40

M14 screw. 815 963 50

M14 screw. 2 621 678 75

M14 screw. 2 621 679 90

M16 screw. 802 281 160

M16 screw. 802 276 110

M16 screw. 802 271 70

M16 screw. 802 076 50M14 lock nut. 1 495 298 -M16 lock nut. 807 356 -M14 washer. 2 104 767 -

M16 washer. 807 329 -


Documents

Bodywork attachment - Scania Group