Partially replace main floor - AR63.40-P-1180RT

MODEL 251

Fig 1: Identifying Main Floor Components

Courtesy of MERCEDES-BENZ USA

	Removing
	Risk of death caused by vehicle slipping or toppling off of the lifting platform.	Align vehicle between columns of vehicle lift and position four support plates at vehicle lift support points specified by vehicle manufacturer.	AS00.00-Z-0010-01A
	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
	General information on body repair	All models	AH60.00-N-0001-01A
1	Remove detachable parts in the repair area
2	Cover detachable parts remaining in vehicle (area to be repaired).	Tarp (fire-resistant)
3.1	Set up straightening bench and position vehicle on straightening bench	If required.	AR60.10-P-1060RT
4	Separate B-pillar with side longitudinal member
5	Cut off main floor, inner longitudinal member and middle crossmember		AR63.40-P-1180-06RT
5		Spot weld cutter Ball cutter, dia. 12 mm Vario Drill WS 91 spot weld removing tool Round wire brush, braided, dia. 70 mm Cutting disk, dia. 50 mm, 80 m/s (max. 30, 600 RPM) Drill Straight grinder	Figure
6	Prepare mating surfaces on vehicle for main floor		AR63.40-P-1180-19RT
		Round wire brush, braided, dia. 70 mm Drill Wet/dry vacuum cleaner	AR63.40-P-1180-19RT
		Zinc dust paint suitable for spot welding	*BR00.45-Z-1001-07A
7	Prepare main floor, inner longitudinal member and middle crossmember	Prepare main floor panel, connection carrier, front crossmember, rear crossmember and inner longitudinal member. Hole punching pliers, dia. 7 mm Round wire brush, braided, dia. 70 mm Drill Wet/dry vacuum cleaner	AR63.40-P-1180-07RT
7		Zinc dust paint suitable for spot welding	*BR00.45-Z-1001-07A
	Install
	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 splatter 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
8	Install main floor, inner longitudinal member and middle crossmember	Install main floor panel, connection carrier, front crossmember, rear crossmember and inner longitudinal member.	AR63.40-P-1180-08RT
	Measures for preventing damage to vehicles or components when performing electric welding work	All models	AH00.00-N-0005-01A
		Observe general information on riveting.	AH00.00-N-0005-01A
		Inspection and welding device Clamping pliers Manual temporary fastener, dia, 6.4 mm - clamping range 0 to 15 mm, identification color silver Round wire brush, braided, dia. 70 mm Abrasive disk, Ø 115 mm, 80 m/s (max. 13, 250 RPM) Blind rivet/punch riveting method MIG MAG gas welder (steel, brazing, aluminum) Inverter spot welder Drill Angle grinder Wet/dry vacuum cleaner	Fig 3
		Rivet	*BR00.45-Z-1001-13A
9	Install battery tray
10	Replace B-pillar with side longitudinal member
11.1	Remove vehicle from straightening bench	If straightening bench was used	AR60.10-P-1060RT
12	Clean repair areas
13	Prime repair area using primer filler	.
14	Perform seam sealing after repair		AR97.10-P-4000RT
15	Paint repair areas and adjacent surfaces	.
16	Apply additional cavity preservation		AR97.20-P-1500RT
17	Reinstall all detachable parts removed

Fig 2: Identifying Spot Weld Milling Cutter (201 589 00 51 00)

Courtesy of MERCEDES-BENZ USA

Fig 3: Identifying Inspection And Welding Device (251 589 12 23 00)

Courtesy of MERCEDES-BENZ USA

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-1001-13A	Blind rivet 6.4 14	A 003 990 35 97