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Home >> Mercedes Benz >> 2020 >> SLC43 AMG Base >> Repair and Diagnosis >> Engine Mechanical >> Blowers, Superchargers & Turbochargers >> Mixture Formation - 172 Chassis >> Testing & Repair >> Remove/Install Housing Of High-Pressure Fuel Pump - AR07.02-P-1026WA

Remove/Install Housing Of High-Pressure Fuel Pump - AR07.02-P-1026WA

Engine 276 in model 172 

Fig 1: High-Pressure Fuel Pump Housing Components Location - Engine 276 In Model 172
G13845361Courtesy of MERCEDES-BENZ USA
  Risk of explosion  caused by fuel igniting, risk of poisoning caused by inhaling and swallowing fuel as well as risk of injury to eyes and skin caused by contact with fuel. No fires, sparks, open flames or smoking Pour fuels into suitable and appropriately marked containers only.
Wear protective clothing when handling fuel.
AS47.00-Z-0001-01A
NOTES Notes on avoiding damage through contamination and foreign objects   AH00.00-P-5000-01A
IMPORTANT General information on work on gasoline direct injection system   AH07.00-P-2000-01A 
REMOVINGINSTALLING Remove/install     
1 Remove high-pressure pump Engine 276.8 in model 172 AR07.02-P-1020WA 
Engine 276.9 in model 172 AR07.02-P-1020W
2 Remove engine wiring harness bracket on high pressure pump housing (2) Engine 276.9 in model 172
TORQUE SPECIFICATION Screw/bolt, additional bracket for high-pressure line to high pressure pump drive housing
*BA07.03-P-1006-01D 
3 Remove screw/bolt (2a)   AR07.02-P-1020-02MM 
TORQUE SPECIFICATION Bolt, high-pressure pump drive housing to cylinder head/cylinder head cover *BA07.02-P-1002-01C 
4 Take out high-pressure pump housing (2) upwards INSTALLATION IMPORTANT : Replace seal and O-ring.  
5 Install in the reverse order    
6 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.
Perform an engine test run and check fuel system for proper operation and leak tightness
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
HIGH PRESSURE PUMP

Number Designation Engine 276
BA07.02-P-1002-01C Bolt, high-pressure pump drive housing to cylinder head/cylinder head cover Stage 1 Nm 1
Stage 2 Nm 9
INJECTION NOZZLES, INJECTION VALVES, LINES

Number Designation Engine 276
BA07.03-P-1006-01D Screw/bolt, additional bracket for high-pressure line to high pressure pump drive housing Nm 9