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Home >> Mercedes Benz >> 2019 >> Sprinter 3500XD 2D Cab Chassis >> Repair and Diagnosis >> Maintenance >> Procedures >> Engine Cooling System >> Testing & Repair >> Remove/Install Connection Fittings For Coolant Hoses - Ar20.20-D-7470TSR

Remove/Install Connection Fittings For Coolant Hoses - Ar20.20-D-7470TSR

Engine 651 in model 907 

G13790067
G13790068
WARNING Risk of injury  to skin and eyes suffering scalding from contact with hot coolantspray. Risk of poisoning  from swallowing coolant. Do not open cooling system unless coolant temperature is below 90 °C. Open cap slowly and release the pressure. Do not pour coolant into beverage containers. Wear protective gloves, protective clothing and safety glasses. AS20.00-Z-0001-01A
REMOVING Remove     
1 Drain off coolant.   AR20.00-D-1142TSR 
2 Remove exhaust gas recirculation cooler.   AR14.20-D-7665TSR
3 Remove cable duct of the engine wiring harness.   AR15.18-D-0004-01TSR
4 Remove fuel filter and swivel out of working area. IMPORTANT Do not remove fuel hoses. AR47.20-D-5510TSR
5 Disconnect electrical connection (13).    
6 Remove holder (2). IMPORTANT To do this, remove screws/bolts (3).  
7 Remove coolant hoses (4, 5, 6) from connection fitting (1). SPECIAL TOOL Hose clamp pliers Fig 1
8 Open clamp (8) on connection fitting (1) and push back onto coolant hose (7). SPECIAL TOOL Hose clamp pliers Fig 1
9 Remove screws (24, 25, 26). Set of flexible head wrenches Fig 2
10 Remove connection fitting (1). IMPORTANT To do this, lift connection fitting (1) and pull out coolant hose (7). l
INSPECT Check     
11 Check clamp (8) and coolant hose (7) for damage. In the case of damage,

Replace clamp (8) or coolant hose (7).
 
INSTALLING Install     
12 Install connection fitting (1). NOTES
Do not use lubricant or liquid seal. Leaks and damage may occur otherwise.
IMPORTANT Install new sealing ring (11) on connection fitting (1).
 
13 Screw in screws (24, 25, 26). IMPORTANT Screw in screw/bolts (24, 25, 26) and their tighten in the numerical sequence.
TORQUE SPECIFICATION Bolt, connection fitting for coolant hoses to cylinder head
*BA20.10-N-1003-01TSR 
SPECIAL TOOL Set of flexible head wrenches Fig 2
14 Fasten clamp (8). IMPORTANT Observe marking on coolant hose (7). SPECIAL TOOL Hose clamp pliers Fig 1
15 Attach coolant hoses (4, 5, 6) to the connection fittings (1). SPECIAL TOOL Hose clamp pliers Fig 1
16 Install holder (2). IMPORTANT Screw in bolts (3) to do this.
TORQUE SPECIFICATION Screw/bolt, bracket to cylinder head
*BA14.20-N-1009-01TS 
17 Connect electrical connector (13).    
18 Install fuel filter.   AR47.20-D-5510TSR
19 Attach cable duct of the engine wiring harness.   AR15.18-D-0004-01TSR
IMPORTANT M6 *BA00.10-N-1002-01A 
20 Install exhaust gas recirculation cooler.   AR14.20-D-7665TSR
21 Fill in coolant.   AR20.00-D-1142TSR 
INSPECT Check     
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
22 Check for leaktightness when engine is running. IMPORTANT Visual inspection only.  
TORQUE SPECIFICATION HEADLESS SCREWS/BOLTS: SCREWS/BOLTS AND NUTS, COARSE-PITCH THREAD

Number Designation 8.8 10.9
BA00.10-N-1002-01A M6 Galvanized Nm 9 13
Phosphated Nm 9 12
TORQUE SPECIFICATION HEADLESS SCREWS/BOLTS: SCREWS/BOLTS AND NUTS, COARSE-PITCH THREAD

Number Designation 12.9
BA00.10-N-1002-01A M6 Galvanized Nm 16
Phosphated Nm 14
TORQUE SPECIFICATION EXHAUST GAS RECIRCULATION

Number Designation Engine 651 in model 907
BA14.20-N-1009-01TS Screw/bolt, bracket to cylinder head Nm 9
TORQUE SPECIFICATION COOLANT THERMOSTAT, COOLANT PUMP, CONNECTION FITTING

Number Designation Engine 651 in model 907
BA20.10-N-1003-01TSR Bolt, connection fitting for coolant hoses to cylinder head Nm 9
Fig 1: Hose Clamp Pliers (454 589 00 37 00)
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Fig 2: Set Of Flexible Head Wrenches (001 589 81 09 00)
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