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Home >> Mercedes Benz >> 2021 >> CLS450 Base >> Repair and Diagnosis >> Engine Performance >> Tune-Up >> Electrical System - Engine - 257 Chassis >> Testing & Repair >> Detach/Attach Tool For Installation/Removal Of Integrated Starter Alternator - AR15.40-P-0003-05MRT

Detach/Attach Tool For Installation/Removal Of Integrated Starter Alternator - AR15.40-P-0003-05MRT

Engine 256.9 

STARTER-ALTERNATOR

Number Designation Engine 256
BA15.40-P-1001-02MRT Bolt, stator housing to timing case Stage 1 Nm 20
Stage 2 ∠° 60
STARTER-ALTERNATOR

Number Designation Engine 256
BA15.40-P-1003-02MRT Bolt, integrated starter alternator to crankshaft Stage 1 Nm 45
Stage 2 ∠° 90
G11971953Courtesy of MERCEDES-BENZ USA
G14548277Courtesy of MERCEDES-BENZ USA

IMPORTANT When releasing screws (4), fix crankshaft in place with SPECIAL TOOL counterholder.

NOTES The stator and rotor must be fixed in position.

Otherwise, integrated starter alternator (A79) is damaged.

  1. Remove bolt (1) TORQUE SPECIFICATION
  2. Attach assembly tool (A) with flattened surface facing upwards.
  3. Tighten assembly screws (2) of assembly tool (A) on stator.
    G14548278Courtesy of MERCEDES-BENZ USA
  4. Screw in assembly screws (5) of assembly tool (A).

    INSTALLATION NOTES Remove assembly tool (A) only after screwing the integrated starter alternator (A79) to the engine.

    Integrated starter alternator (A79) will otherwise be damaged.

  5. Remove bolts (4) TORQUE SPECIFICATION
  6. Remove assembly tool (A) in reverse order.