Remove/install longitudinal member

AR62.20-P-1241RC

Remove/install longitudinal member

15.07.2019

Model

452.3/4

Front longitudinal member (rear)

1

Longitudinal member

1

Longitudinal member

2

Welding points

3

Welding area

4

Point distances



Remove

 Danger

The high voltage used for electric welding presents a lethal hazard. Risk of explosion from welding in areas close to highly inflammable materials. Risk of injury from weld splatter and UV-light when welding. Risk of poisoning from inhaling welding gases

Use insulating mats. Wear protective clothing, safety glasses and a protective mask. Remove highly inflammable materials from the hazard area. Use air extraction system.

AS00.00-Z-0007-01A

Topical note

Measures for preventing damage to vehicles or components when performing electric welding work

AH00.00-N-0005-01A

Topical note

General information on body repair

AH60.00-N-0001-01A

Topical note

Notes on performing repair, body work and welding on vehicles with airbags and RTE units

AH91.00-P-0002-01M

Notes on replacing body parts

AH60.00-P-0027-01FF

1

Disconnect battery ground line

AR54.10-P-0003RR

2

Position body onto straightening bench

 Carry out welding on longitudinal member (1) only for vehicles that are screwed to the straightening bench because it will otherwise not be possible to weld in with dimensional accuracy.

Possible deviations and tolerances can no longer be eliminated by adjusting the toe-in. The straightening bench and the straightening set from the companies Celette, Car Bench, Car-O-Liner, or Blackhawk can optionally be used.

3

Drill out spot welds (2) on welding flanges

4

Remove longitudinal member (1)



Install

5

Smooth welding edges; remove paint in the welding area (3) of the separating point

6

Apply priming to the blank welds in the repair area

Zinc dust paint suitable for spot welding

*BR00.45-Z-1001-07A

7

Prepare welding edges

8

Remove protective paint from the welding areas of the new longitudinal member (1) and apply priming

Zinc dust paint suitable for spot welding

*BR00.45-Z-1001-07A

9

Pierce welding flanges with hole punching pliers at the specified point distances (4)


Not for resistance spot welding.
Danger of component part being unusable!

10

Fit longitudinal member (1)


When fitting observe correct distances.
Danger of component part being unusable!

11

Screw in longitudinal member (1) during the inert gas or resistance spot welding process at the specified point distances (4)

 Inert gas or resistance spot welding process

12

Smooth spot welds and unevenness slightly.

13

Clean repair areas with a wire brush and then prime

14

Supplement standard sealants with body sealant

White sealing compound, 310 ml, DBL 6069.20

*BR00.45-Z-1003-01A

15

Paint repair area adjacent surfaces

Topical note

Notes on paintwork repairs

AH98.00-P-9408-02MCC

16

Add cavity preserving agent

Repair materials

Number

Designation

Order number

BR00.45-Z-1001-07A

Zinc dust paint suitable for spot welding

A 000 986 34 42

BR00.45-Z-1003-01A

White sealing compound, 310 ml, DBL 6069.20

A 001 989 63 20