Upper Front Longitudinal Member Partial Replacement - Ar62.20-S-1287E

Model 447, 448 

Fig 1: Upper Front Longitudinal Member Component Location (Partial Replacement) (Model 447, 448)

Courtesy of MERCEDES-BENZ USA

	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
	Risk of death  caused by vehicle slipping or toppling off of the lifting platform.	Align vehicle between vehicle lift columns and position the four support plates at the vehicle lift support points specified by the vehicle manufacturer.	AS00.00-Z-0010-01A
	Risk of death  when working on component parts and systems with U >= 30 V alternating voltage (AC) or U >= 60 V direct voltage (DC)	Do not touch damaged or defective live component parts and lines or non-insulated electrical connections and lines. Model 447 with engine 780	AS00.00-Z-0035-01A
	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
Notice	General information on vehicles with high-voltage on-board electrical system and/or lithium-ion battery and/or gaseous-fuel drive system as well as personal protective equipment	Model 447 with engine 780	AH00.00-Z-0300-01A
Notice	Special instructions for lifting and supporting vehicle		AH00.60-S-0100-01KOA
Notice	Notes on battery		AH54.10-P-0001-01A
Notice	General information on body repair		AH60.00-P-0001-01KOA
Notice	Measures for preventing damage to components when performing electric welding and soldering work		AH60.00-P-0001-02A
Notice	Notes on body repairs to the front end		AH62.00-S-0001-01KOA
	General information on MB materials		AH98.00-P-9409-03A
	Remove
1	Remove all detachable parts in area of repair point.
2	Cover all detachable parts that remain in the vehicle with fire-resistant welding protection blankets.	Commercially available devices/tools  Welding protection blanket
3	Partially remove top front longitudinal member (1).	Commercially available devices/tools  Body power jigsaw Spot weld milling machine Rotary wire brush Wet and dry vacuum cleaner	AR62.20-S-1287-01E
		Zinc dust paint suitable for spot welding	*BR00.45-Z-1001-07A
4	Partially prepare top front longitudinal member (1).	Commercially available devices/tools  Body power jigsaw Rotary wire brush Wet and dry vacuum cleaner	AR62.20-S-1287-02E
		Zinc dust paint suitable for spot welding	*BR00.45-Z-1001-07A
	Install
5	Install corresponding welding fixture.	Model 447 with engine 622, 780	AR62.20-S-1286-05EFA
Notice	Notes on threaded connections fastened using a tightening angle-based tightening process		AH00.00-P-0020-01A
		Model 447 with engine 254, 274, 651, 654 Model 448 with engine 254, 274	AR62.20-S-1286-05EFE
		Screw/bolt, suspension strut to body	*BA32.25-Z-1004-04KOC
		Model 447 with engine 254, 274, 651, 654 Model 448 with engine 254, 274 Welding device	Fig 2
		Model 447 with engine 622, 780 Welding device	Fig 3
6	Partially install and weld in top front longitudinal member (1) with welding fixture.		AR62.20-S-1287-03E
	000 588 13 84 00 Welder		WS60.00-P-0437K
	000 588 12 84 00 Welder	Commercially available devices/tools  Clamping pliers (Standard) Rotary wire brush Angular grinder Wet and dry vacuum cleaner	WS00.00-P-0318K
		Model 447 with engine 254, 274, 651, 654 Model 448 with engine 254, 274 Welding device	Fig 2
		Model 447 with engine 622, 780 Welding device	Fig 3
	Remove
7	Remove corresponding welding fixture.	Model 447 with engine 254, 274, 651, 654 Model 448 with engine 254, 274 Welding device	Fig 2
		Model 447 with engine 622, 780 Welding device	Fig 3
	Install
8	Remove welding protection blankets.	Commercially available devices/tools  Welding protection blanket
	Risk of explosion  caused by paint vapors igniting. Risk of poisoning  caused by inhaling paint vapors.	No smoking! No open fire! Use respiratory protection, protective clothing, gloves, safety glasses and protective skin cream. Ensure that the area is well ventilated.	AS98.00-Z-0002-01A
9	Prime repair area with a primer filler.
Notice	Notes on paintwork repairs	Repair area must be free of dust and grease. Otherwise adhesion problems may occur. Use only primer fillers approved by manufacturer. See guidelines for paint technology in the workshop portal.	AH98.00-P-9408-02A
10	Seal seam after repair.	Supplement standard seals with sealant.	AR97.10-S-4000E
	Risk of explosion  caused by paint vapors igniting. Risk of poisoning  caused by inhaling paint vapors.	No smoking! No open fire! Use respiratory protection, protective clothing, gloves, safety glasses and protective skin cream. Ensure that the area is well ventilated.	AS98.00-Z-0002-01A
11	Paint repair area and adjacent surfaces.
Notice	Notes on paintwork repairs	Only use paints approved by the manufacturer. See guidelines for paint technology in the workshop portal.	AH98.00-P-9408-02A
12	Supplement cavity preservation.		AR97.20-S-1500E
13	Install all detachable parts in area of repair point.

SUSPENSION STRUTS

Number	Designation			Model 447, 448
BA32.25-Z-1004-04KOC	Screw/bolt, suspension strut to body	Stage 1	Nm	40
		Stage 2	∠°	90

Fig 2: Identifying Welding Device (447 589 02 23 00)

Courtesy of MERCEDES-BENZ USA

Fig 3: Identifying Welding Device (447 589 03 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