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Home >> Mercedes Benz >> 2019 >> CLA250 4Matic, Gas >> Repair and Diagnosis >> Body & Frame >> Exterior Body Panels >> Front End & Fire Wall >> Testing & Repair >> Partially remove/install lower firewall - AR62.25-P-1100NKB

Partially remove/install lower firewall - AR62.25-P-1100NKB

MODEL 117, 156, 176, 242, 246 

Shown on MODEL 246 

Fig 1: Lower Firewall Remove/Install Components - Shown On Model 246
G10251244Courtesy of MERCEDES-BENZ USA
DANGER Risk of injury  due to fan starting unexpectedly Do not reach into the rotation or hazard area of the fan. Wear closed and close-fitting work clothes. AS20.40-Z-0001-01A
DANGER Risk of death  when touching components on vehicles with high-voltage on-board electrical system Do not touch components and open lines of the high-voltage on-board electrical system. Persons who wear electronic implants (e.g. cardiac pacemakers), must not  carry out any work on high-voltage on-board electrical systems. AS54.00-Z-0001-01A
DANGER 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
DANGER 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
NOTES Pretreatment of bonding surfaces   AH60.00-P-0008-01SX
IMPORTANT Note on high-voltage on-board electrical system   AH54.00-P-0010-01A
IMPORTANT Information on preventing damage to electronic components due to electrostatic discharge   AH54.00-P-0001-01A
IMPORTANT General information on body repair   AH60.00-P-0001-01A
IMPORTANT General information on MB materials   AH98.00-P-9409-03A
REMOVING Remove     
1 Remove detachable parts in area to be repaired    
2 Cover all detachable parts remaining on vehicle with spark protection blanket    
3 Remove complete wheel well   AR62.20-P-1200NKB 
4 Separate lower firewall (1) and connecting carrier (2)   AR62.25-P-1100-01NKB
IMPORTANTCommercially available devices/tools 
Round wire brush
Spot weld milling machine
Wet and dry vacuum cleaner
Heat gun
 
Zinc dust paint suitable for spot welding *BR00.45-Z-1001-07A 
5 Prepare lower firewall (1) and connecting carrier (2)   AR62.25-P-1100-02NKB
IMPORTANTCommercially available devices/tools 
Round wire brush
 
Zinc dust paint suitable for spot welding *BR00.45-Z-1001-07A 
INSTALLING Install     
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 flammable materials from the hazard area. Use air extraction system. AS00.00-Z-0007-01A
DANGER Risk of poisoning  caused by inhaling vapors or swallowing adhesive. Risk of injury  caused by adhesive coming into contact with skin and eyes Wear respiratory protection, protective gloves and safety glasses. Pour adhesive into suitable and appropriately marked containers only. AS00.00-Z-0016-01A
NOTES Measures for preventing damage to components when performing electric welding and soldering work   AH60.00-P-0001-02A
IMPORTANT General information on riveting   AH60.00-P-0003-01N
6 Install lower firewall (1) and connecting carrier (2) and weld in   AR62.25-P-1100-03NKB
REFER TO SPECIAL TOOLS 000 588 02 39 00 Rivet press tool   WS60.00-P-0010B
IMPORTANTCommercially available devices/tools 
Spot welder
Round wire brush
Manual temporary fastener, 6.35 mm
Wet and dry vacuum cleaner
 
Zinc dust paint suitable for spot welding *BR00.45-Z-1001-07A 
Adhesive kit, body, 2-component adhesive *BR00.45-Z-1092-02A 
Blind rivet 6.5 X 12.5 *BR00.45-Z-1012-13A 
7 Clean weld joints and sheet metal flange with round wire brush    
8 Install complete wheel well   AR62.20-P-1200NKB 
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-1012-13A Blind rivet 6.5 X 12.5 A 004 990 16 97
BR00.45-Z-1092-02A Adhesive kit, body, 2-component adhesive A 009 989 36 71