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Home >> Mercedes Benz >> 2021 >> GLE350 Base >> Repair and Diagnosis >> Engine Mechanical >> Blowers, Superchargers & Turbochargers >> Mixture Formation -- 167 Chassis (2 Of 3) >> Testing & Repair >> Remove/Install High Pressure Fuel Pump >> Remove/Install High Pressure Fuel Pump - AR07.02-P-1028MRK

Remove/Install High Pressure Fuel Pump - AR07.02-P-1028MRK

Engine 264 In Model 167 

Fig 1: High Pressure Fuel Pump Components Location - Engine 264 In Model 167
G15031525Courtesy of MERCEDES-BENZ USA
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
DANGER Risk of explosion  caused by fuel igniting. Risk of injury  to skin and eyes caused by fuel spraying out at high pressure Keep all ignition sources out of hazard area.
Do not carry out any work on system when it is pressurized.
AS07.16-Z-0001-01A
DANGER 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
Topical note  Notes on avoiding damage through contamination and foreign objects   AH00.00-P-5000-01A
Topical note  Information on preventing damage to electronic components due to electrostatic discharge   AH54.00-P-0001-01A
Topical note  Notes on threaded connections fastened using a tightening angle-based tightening process   AH00.00-P-0020-01A
  Note on calculation of tightening torque when using insertion or socket tools with various effective lengths   AH00.00-P-0015-01CW
  General information on work on gasoline direct injection system   AH07.00-P-2000-01A
REMOVING Remove     
1 Relieve fuel pressure using diagnostic system.    
REFER TO SELF-DIAGNOSTIC SYSTEMS   IMPORTANT To do so, select following menu items:
ME-SFI [ME] control unit →
Actuation →
Actuate the fuel pump.
AD00.00-P-2000-06ME
2 Clamp off ground line of on-board electrical system battery (G1).   AR54.10-P-0003ME
3 Remove rear engine cover.   AR01.10-P-2408MRK
4 Remove charge air cooler, place toward the front with connected lines, and remove right charge air line.   AR09.41-P-6817MRK
5 Rotate engine at crankshaft center bolt in direction of engine rotation to a 79° crank angle (CKA) after top dead center (ignition TDC) on cylinder 1 SPECIAL TOOL Socket wrench bit Fig 5
6 Remove the cable duct from the cylinder head cover and shielding (1).    
7 Unclip the electrical cable from the shielding (1).    
8 Release and disconnect electrical connection of high-pressure pump (4).    
9 Remove shielding (1). IMPORTANT Loosen the shielding (1) in the direction in contrary to the tightening procedure. AR07.02-P-0815-01MRH 
10 Remove soundproofing (2).    
11 Clean the environment around the high-pressure pump (4), high-pressure line (7), and low-pressure line (6). Assembly cleaner *BR00.45-Z-1028-04A 
12 Release fuel pressure in the fuel high-pressure circuit.   AR07.03-P-1460-02MM 
13 Remove high-pressure line (7) and seal connections with suitable stop plugs. NOTES
Do not kink or bend high-pressure line (7).
Leaks can occur otherwise.
SPECIAL TOOL Box wrench bit
Fig 4
    SPECIAL TOOL Record plug Fig 3
14 Remove low-pressure line (6) from the cylinder head cover and high-pressure pump (4).   AR07.03-P-1120MRK 
15 Remove screw/bolts (3). NOTES
Remove screws (3) alternately by half a turn each.
Damage may occur otherwise to the high-pressure pump (4).
 
16 Remove high-pressure pump (4).    
17 Remove the tappet element (5) from the cylinder head cover.    
INSPECT Check     
18 Check tappet element (5) for wear and damage. If damage or wear is present,
↓
replace tappet element (5).
 
19 Check the high-pressure line (7).   AR07.03-P-1010-03MM 
    Assembly cleaner
If damage is present,
↓
Replace the high-pressure line (7).
*BR00.45-Z-1028-04A 
20 Check low-pressure line (6).   AR07.03-P-1120-01MNE 
    Assembly cleaner
If damage is present,
↓
Replace low-pressure line (6).
*BR00.45-Z-1028-04A 
      AR07.03-P-1120MRK 
CLEAN Clean     
21 Clean mount for high-pressure pump (4) in the cylinder head cover. Assembly cleaner *BR00.45-Z-1028-04A 
INSTALLING Install     
22 Position the tappet element (5) in the cylinder head cover. NOTES
The drive roller of the tappet element (5) must point towards the camshaft.
The camshaft can get damaged otherwise.
 
23 Replace sealing ring of the high-pressure pump (4).    
24 Position high-pressure pump (4) in cylinder head cover.    
25 Screw in new screws (3). NOTES
Screw in screws (3) alternately by half a turn each.
Damage may occur otherwise to the high-pressure pump (4).
NOTES
The high-pressure pump (4) must lie flat on the cylinder head cover after screwing in the screws (3).
Leaks can occur otherwise.
TORQUE SPECIFICATION Bolt, high-pressure pump to cylinder head cover
*BA07.02-P-1001-02A 
26 Install low-pressure line (6).   AR07.03-P-1120MRK 
27 Install high-pressure line (7).   AR07.03-P-1010-02MRH 
    TORQUE SPECIFICATION Union nut, fuel line to high-pressure pump/fuel distributor *BA07.03-P-1001-01I 
    SPECIAL TOOL Box wrench bit Fig 4
28 Install soundproofing (2).    
29 Install shielding (1). IMPORTANT Observe tightening procedure. AR07.02-P-0815-01MRH 
    TORQUE SPECIFICATION Bolt for high-pressure pump shielding *BA07.02-P-1002-02A 
30 Install the cable duct at the cylinder head cover and shielding (1). TORQUE SPECIFICATION Engine cover ball head to engine wiring harness cable duct *BA15.18-P-1002-01K 
    TORQUE SPECIFICATION Bolt, engine wiring harness to cylinder head cover *BA15.18-P-1001-01K 
    SPECIAL TOOL Tool kit Fig 2
31 Clip in the electrical cables at the shielding (1).    
32 Connect electrical connection of high-pressure pump (4) until it is locked.    
33 Install the charge air cooler.   AR09.41-P-6817MRK
34 Clip on ground line of the on-board electrical system battery (G1).   AR54.10-P-0003ME
35 Switch on ignition. NOTES
Switch on the ignition for 5 s to fill the high-pressure pump (4) with fuel prior to starting the engine.
Damage may occur otherwise to the high-pressure pump (4).
 
36 Check the fuel high-pressure circuit.   AR07.03-P-1010-04MM 
WARNING Risk of burn injuries  , suffocation and poisoning when working on the exhaust system and the components connected to it. Risk of suffocation and risk of poisoning caused by inhalation of gaseous and solid components of the exhaust. Risk of poisoning  caused by skin contact with solid components of the exhaust. Wear protective clothing and safety glasses. Use the extraction system. Move people out of the hazard area. AS49.00-Z-0001-01A
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
37 Perform engine test run. While doing so, check engine for proper operation and leak tightness.    
38 Install rear and top engine cover.   AR01.10-P-2408MRK
FUEL SYSTEM HIGH PRESSURE PUMP

Number Designation Engine 264
BA07.02-P-1001-02A Bolt, high-pressure pump to cylinder head cover Nm 9
FUEL SYSTEM HIGH PRESSURE PUMP

Number Designation Engine 264
BA07.02-P-1002-02A Bolt for high-pressure pump shielding Nm 20
INJECTION NOZZLES, INJECTION VALVES, LINES

Number Designation Engine 264
BA07.03-P-1001-01I Union nut, fuel line to high-pressure pump/fuel distributor Stage 1 Nm 15
Stage 2 ∠° 75
Stage 3 ∠° 25
ENGINE WIRING HARNESS

Number Designation Engine 264
BA15.18-P-1001-01K Bolt, engine wiring harness to cylinder head cover M6 Nm 8
ENGINE WIRING HARNESS

Number Designation Engine 264
BA15.18-P-1002-01K Engine cover ball head to engine wiring harness cable duct Nm 8
Fig 2: Identifying Tool Kit (000 589 10 99 00)
G13657566Courtesy of MERCEDES-BENZ USA
Fig 3: Identifying Record Plug (129 589 00 91 00)
G11065549Courtesy of MERCEDES-BENZ USA
Fig 4: Identifying Box Wrench Bit (000 589 80 03 00)
G11138963Courtesy of MERCEDES-BENZ USA
Fig 5: Identifying Socket Wrench Bit (001 589 65 09 00)
G11971737Courtesy of MERCEDES-BENZ USA
REPAIR MATERIALS

Number Designation Order number
BR00.45-Z-1028-04A Assembly cleaner A 000 986 56 01