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Home >> Mercedes Benz >> 2022 >> E450 4Matic, 2D Convertible >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Electrical System - Engine - 238 Chassis >> Testing & Repair >> Remove/Install Regulator For Belt Driven Alternator - AR15.40-P-5760MND
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Remove/Install Regulator For Belt Driven Alternator - AR15.40-P-5760MND

Engine 276.8 In Model 213, 238 

Fig 1: Regulator For Belt Driven Alternator Components Location - Engine 276.8 In Model 238
G15375125Courtesy of MERCEDES-BENZ USA

Shown: control with locked carbon brushes (A) and with extended carbon brushes (B) 

G15375126Courtesy of MERCEDES-BENZ USA
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 threaded connections with aluminum screws/bolts   AH00.00-P-0006-01RM
Notice  Notes on avoiding damage through contamination and foreign objects   AH00.00-P-5000-01A
Notice  Notes on self-locking nuts and bolts   AH00.00-P-0001-01KOA
REMOVING Remove     
1 Remove alternator (22)   AR15.40-P-5032MND 
2 Unscrew nuts (1) and remove cover (2)    
3 Remove screws/bolts (3) and remove control (4)    
INSTALLING Install     
4 Position new control (4) and tighten down.
screw/bolts (3)
TORQUE SPECIFICATION Bolt, regulator to alternator *BA15.40-P-1005-01F 
5 Press on cap (6) until the carbon brushes (5) audibly to the rotor (7) of the alternator (22) IMPORTANT The carbon brushes (5) of the new control (4) are locked by means of the protective cap (6) upon delivery.  
6 Position cover (2) and tighten nuts (1) TORQUE SPECIFICATION Bolt/nut, cover to alternator *BA15.40-P-1008-01F 
7 Install alternator (22)   AR15.40-P-5032MND 
ALTERNATOR

Number Designation Engine 276
BA15.40-P-1005-01F Bolt, regulator to alternator M4X13 Nm 2
M4X19 Nm 3
ALTERNATOR

Number Designation Engine 276
BA15.40-P-1008-01F Bolt/nut, cover to alternator Nm 3