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Home >> Mercedes Benz >> 2021 >> CLA250 Base >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Electrical System -- Engine -- 118 Chassis >> Testing & Repair >> Remove/Install Wiring Harness For Alternator - AR15.18-P-0016MFG

Remove/Install Wiring Harness For Alternator - AR15.18-P-0016MFG

Engine 139 in model 118, 177, 247 

G16048545Courtesy of MERCEDES-BENZ USA

Shown on model 177 

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
WARNING Risk of injury  . Skin or eye injuries may result when handling hot or glowing objects. Wear protective gloves, protective clothing and safety glasses, if necessary. AS00.00-Z-0002-01A
CAUTION 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  Information on preventing damage to electronic components due to electrostatic discharge   AH54.00-P-0001-01A
Notice  Notes on self-locking nuts and bolts   AH00.00-P-0001-01KOA
  Notes on safety-relevant components   AH00.00-Z-0019-01A
REMOVINGINSTALLING Remove/install     
1 Disconnect ground line of on-board electrical system battery (G1).   AR54.10-P-0003MFA
2 Remove bottom engine compartment lining.   AR61.20-P-1105MFR
3 Remove front left wheel and tire assembly.   AR40.10-P-1102MFA
4 Remove front section from left front fender liner.   AR88.10-P-1301MFA
5 Remove cover cap (4) and nut (5). TORQUE SPECIFICATION Nut, starter wiring harness to current limiter *BA54.10-P-1006-01D 
6 Remove cover cap of nut (9) and remove nut (9). TORQUE SPECIFICATION Nut, circuit B+ to alternator *BA15.40-P-1002-01F 
7 Unclip bracket (7) on the crossmember.    
8 Remove bracket (8) from the charge air cooler. TORQUE SPECIFICATION M6 *BA00.10-P-1002-01A 
9 Remove wiring harness for the alternator (6). IMPORTANT Brackets (7, 8) remain on the wiring harness for the alternator (6).  
10 Remove brackets (7, 8) from the wiring harness for the alternator (6). When replacing the wiring harness for the alternator (6).
INSTALLATION IMPORTANT Replace cable tie.
 
11 Install in the reverse order.    
12 Read out and delete fault memory.    
REFER TO SELF-DIAGNOSTIC SYSTEMS     AD00.00-P-2000-06MFA
WARNING Risk of accident  from vehicle starting off by itself when engine running. Risk of injury (bruises and burns) resulting from working on the engine while it is being started or when it is running. Secure vehicle to prevent it from starting off by itself. Wear closed and snug-fitting work clothes. Do not touch hot or rotating parts. AS00.00-Z-0005-01A
13 Perform engine test run; while doing so, check alternator (G2) for proper operation.    
HEADLESS SCREWS: BOLTS AND NUTS, COARSE-PITCH THREAD

Number Designation Model all (4xWD, CAR, smart)
BA00.10-P-1002-01A M6 8.8 Galvanized Nm 9
Phosphated Nm 9
10.9 Galvanized Nm 13
Phosphated Nm 12
12.9 Galvanized Nm 16
Phosphated Nm 14
ALTERNATOR

Number Designation Engine 139.9
BA15.40-P-1002-01F Nut, circuit B+ to alternator Nm 16
BATTERY

Number Designation Model 118 Model 177
BA54.10-P-1006-01D Nut, starter wiring harness to current limiter Nm 16 16
BATTERY

Number Designation Model 247
BA54.10-P-1006-01D Nut, starter wiring harness to current limiter Nm 16