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Tightening Procedure For Housing Of Fuel System High Pressure Pump - AR07.02-P-1020-02MRT

Engine 256.9 

Topical note  Notes on threaded connections fastened using a tightening angle-based tightening process   AH00.00-P-0020-01A
HIGH PRESSURE FUEL PUMP, HIGH PRESSURE FUEL PUMP HOUSING

Number Designation Engine 256.9
BA07.02-P-1002-01MRT Screw/bolt, high pressure fuel pump housing to crankcase Stage 1 Nm 2
Stage 2 Nm 8
Stage 3   60

NOTES Do not use a pneumatic tool to remove/screw in screws (1 - 3). Housing of fuel high-pressure pump or crankcase will otherwise be damaged.

NOTES Comply with listed tightening sequence.

Leaks and damage to housing of fuel high-pressure pump will otherwise occur.

IMPORTANT Release screws (1 - 3) in reverse order to tightening sequence.

  1. Tighten screws (1 - 3) in numerical order to stage 1.TORQUE SPECIFICATION
  2. Tighten screws (1 - 3) in numerical order to stage 2.TORQUE SPECIFICATION
  3. Tighten screws (1 - 3) in numerical order to stage 3.TORQUE SPECIFICATION
G14548144Courtesy of MERCEDES-BENZ USA