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Home >> Mercedes Benz >> 2015 >> Sprinter 3500 Van Cargo Extended, RWD >> Repair and Diagnosis >> Engine Mechanical >> Cooling System (Mechanical) >> Engine Cooling System -- Model 906 (Engine 651) >> Testing & Repair >> Remove/Install Viscous Fan Clutch - Ar20.40-D-5660WE

Remove/Install Viscous Fan Clutch - Ar20.40-D-5660WE

Engine 651.955/956/957 in model 906 

MODIFICATION NOTES

20.11.2015 Drain off about 3 liters of coolant at cooler drain valve, added. Operation step 3
20.11.2015 Remove coolant hose (11), added. Operation step 4
20.11.2015 Perform an engine test run and check engine for leaktightness in the area around the coolant hose (11), added. Operation step 12
G13186969Courtesy of MERCEDES-BENZ USA
G13186970Courtesy of MERCEDES-BENZ USA
  Risk of injury  . Moving parts can pinch, crush or, in extreme cases even sever extremities. No parts of the body or limbs should be within the operating range of the mechanism when moving components. AS00.00-Z-0009-01A
REMOVINGINSTALLING Remove/install     
1 Remove engine cover   AR01.10-D-2405WE
2 Unclip and remove cover (1) on the fan cowl (2)    
3 Drain off about 3 liters of coolant at cooler drain valve IMPORTANT Collect coolant in a clean container.
INSTALLATION IMPORTANT Replace the drained off coolant quantity up to the marking on coolant expansion reservoir.
AR20.00-D-1140SD 
4 Remove coolant hose (11) SPECIAL TOOL Hose clamp pliers Figure
5 Unclip coolant hose (3) on fan shroud (2) and place to one side    
6 Remove cover (9) on both sides to the fan shroud (2) (arrow)    
7 Loosen locks (5), remove fan shroud (2) upwards out of the brackets (4) and place to the rear IMPORTANT The number of brackets (4) can vary.  
8 Cover cooler (6) in the area of the viscous fan clutch (7) with a guard plate    
REFER TO SHOP-MADE TOOLS Guard plate for radiator/condenser   WF58.50-S-0110-01S
9 Place counterholder on the belt pulley of the water pump and unscrew screw/bolt (8) TORQUE SPECIFICATION Viscous fan clutch to coolant pump *BA20.40-N-1002-01N 
    SPECIAL TOOL Engine 651.955/956/957 in model 906 with code MJ7 (ECO start/stop function)
Engine 651.955/956/957 in model 906 with code MJ8 (ECO start/stop function) Counterholder
Fig 1
    SPECIAL TOOL Engine 651.955/956/957 in model 906 except code MJ7 (ECO start/stop function) except code MJ8 (ECO start/stop function) Counterholder Fig 3
10 Remove viscous fan clutch (7) with fan cowl (2) upwards    
11 Install in the reverse order    
INSPECT Check     
12 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 engine for leaktightness in the area of the coolant hose (11)
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
FAN, FAN CLUTCH

Number Designation Engine 651 in model 906
BA20.40-N-1002-01N Viscous fan clutch to coolant pump Nm 45
Fig 1: Counterholder (651 589 05 40 00)
G13186971Courtesy of MERCEDES-BENZ USA
Fig 2: Hose Clamp Pliers (003 589 03 37 00)
G13186972Courtesy of MERCEDES-BENZ USA
Fig 3: Counterholder (651 589 06 40 00)
G13186973Courtesy of MERCEDES-BENZ USA