Replace rear-end floor reinforcement - AR64.20-P-1141MCC

MODEL 451.3/4 

Illustrated on model 451.3 

Fig 1: Identifying Rear-End Floor Reinforcement

Courtesy of MERCEDES-BENZ USA

MODIFICATION NOTES

30.1.09

Information on alternative repair methods added (riveting or plug welding as alternative)

	Removing
	Risk of death  caused by high voltage used for electric welding. Risk of explosion  caused by welding in the area of highly inflammable materials. Risk of injury  caused by welding spatter and UV light while welding. Risk of poisoning  caused by inhaling welding fumes.	Use insulating mats. Wear protective clothing, safety glasses and protective mask. Remove highly inflammable materials from the hazard area. Use air extractor system.	AS00.00-Z-0007-01A
	Risk of injury  caused by scraping or cutting body parts on sharp vehicle parts	Always wear protective gloves when working on or near sharp and non-deburred vehicle parts. Deburr repair panels.	AS00.00-Z-0017-01A
	Measures for preventing damage to vehicles or components when performing electric welding work		AH00.00-P-0005-01FF
	Notes on performing repair, body work and welding on vehicles with airbags and ETR units		AH91.00-P-0002-01SM
	General information on riveting		AH60.00-P-0003-01MCC
	Notes on replacing body parts		AH60.00-P-0027-01FF
	General information on repairs to body		AH60.00-P-0001-01FF
	Generally conventional tools are required for body work, additional tools required are listed above.	Pneumatic/hydraulic blind rivet tool
	The repair method using riveting described here can be replaced by plug welding if required. Adapt preparatory work accordingly.
1	Remove detachable parts in the repair area
2	Cover all detachable parts remaining in vehicle (area to be repaired)	Use fireproof tarp to avoid damage from flying sparks.
3	Partially remove side wall paneling	On model 451.3	AR63.10-P-0115MCC
		On model 451.4	AR63.10-P-0115MCO
4	Partially remove side wall reinforcement		AR63.20-P-0862MCC
5	Remove B-pillar reinforcement	On model 451.3	AR63.20-P-1351MCC
		On model 451.4	AR63.20-P-1351MCO
6	Remove rear lamp insert	On model 451.3	AR64.20-P-1061MCC
		On model 451.4	AR64.20-P-1061MCO
7	Remove rear wheel well		AR63.10-P-0661MCC
8	Remove B-pillar inner section		AR63.20-P-1355MCC
9	Remove rear-end floor reinforcement (1)		AR64.20-P-1141-01MCC
10	Prepare connecting points for rear-end floor reinforcement (1) on body		AR64.20-P-1141-04MCC
		Zinc dust paint suitable for spot welding	*BR00.45-Z-1001-07A
11	Prepare rear-end floor reinforcement (1) for installation		AR64.20-P-1141-02MCC
		Zinc dust paint suitable for spot welding	*BR00.45-Z-1001-07A
	Install
12	Install rear-end floor reinforcement (1) and weld in		AR64.20-P-1141-03MCC
		Rivet	*BR00.45-Z-1001-13A
13	Install B-pillar inner section		AR63.20-P-1355MCC
14	Install rear wheel well		AR63.10-P-0661MCC
15	Install rear lamp insert	On model 451.3	AR64.20-P-1061MCC
		On model 451.4	AR64.20-P-1061MCO
16	Install B-pillar reinforcement	On model 451.3	AR63.20-P-1351MCC
		On model 451.4	AR63.20-P-1351MCO
17	Partially install side wall reinforcement		AR63.20-P-0862MCC
18	Partially install side wall paneling	On model 451.3	AR63.10-P-0115MCC
		On model 451.4	AR63.10-P-0115MCO
19	Clean welds and sheet metal flange with wire brush and clean areas to be repaired
20	Prime area to be repaired using primer filler
21	Supply standard seam seals with body sealant		AR97.10-P-4000MCC
		Sealant	*BR00.45-Z-1003-01A
22	Supplement standard underbody protection with permanent underbody sealant	Underfloor protection	*BR00.45-Z-1001-05A
23	Paint area repaired and adjacent surfaces
	Notes on paintwork repairs		AH98.00-P-9408-02MCC
24	Apply additional cavity preservation		AR97.20-P-1500FF
		Teroson protective wax	*BR00.45-Z-1008-05A
25	Reinstall all detachable parts removed

REPAIR MATERIALS

Number	Designation	Order number
BR00.45-Z-1003-01A	Sealant, white, 310 ml, DB supply specification 6069.20	A 001 989 63 20
BR00.45-Z-1001-05A	Underfloor protection 800 ml	A 001 986 46 10
BR00.45-Z-1008-05A	Teroson protective wax	Henkel Loctite
	Art. no.: 122.73Q
BR00.45-Z-1001-07A	Zinc dust paint suitable for spot welding	A 000 986 34 42
BR00.45-Z-1001-13A	Blind rivet 6.4x14	A 003 990 35 97