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Home >> Mercedes Benz >> 2005 >> S55 >> Repair and Diagnosis >> Engine Mechanical >> Cooling System (Mechanical) >> Engine Cooling System - 215 & 220 Chassis >> Testing & Repair >> Remove/install coolant pump - AR20.10-P-1271 >> Remove/install coolant pump - AR20.10-P-1271RVK

Remove/install coolant pump - AR20.10-P-1271RVK

ENGINE 113.990 in MODELS 211.076 /276 

ENGINE 113.991 in MODELS 215.374, 220.074 

ENGINE 113.992 in MODEL 230.474 

ENGINE 113.995 in MODEL 230.472 

Fig 1: Identifying Coolant Pump Remove/Install Components - Engine 113.990 In Models 211.076
G04840363

Bolt assignment of coolant pump 

Fig 2: Identifying Bolt Assignment Of Coolant Pump
G04840364
MODIFICATION NOTES

17.7.02 Text modified from "thread pretapped to thread not pretapped". Text modified to BA20.10-P-1001-01C in line 2 *BA20.10-P-1001-01C 
17.7.02 Text modified from "thread not pretapped to thread pretapped". Text modified to BA20.10-P-1001-01C in line 3 *BA20.10-P-1001-01C 
REMOVINGINSTALLING Remove/install     
DANGER Risk of injury  to skin and eyes caused by scalding from contact with hot coolant spray.
Risk of poisoning  from swallowing coolant.		 Do not open cooling system unless coolant temperature is below 90°C. Open cap slowly and release pressure. Do not pour coolant into beverage containers.
Wear protective gloves, protective clothing and safety glasses.		 AS20.00-Z-0001-01A 
1 Drain coolant from radiator   AR20.00-P-1142RVK 
NOTES Notes on coolant   AH20.00-N-2080-01A 
2 Remove front engine compartment paneling    
3 Remove poly-V-belt of supercharger   AR13.21-P-1202RVK
4 Remove poly-V-belt (4) Model 215.374, 220.074, 230.472 /474 AR13.22-P-1202R
    Model 211.076 / 276 AR13.22-P-1202RV
5 Unscrew bolts of belt pulley (1) at coolant pump (3) IMPORTANTInstallation:  Tighten bolts for belt pulley (1) fully.  
    TORQUE SPECIFICATION Engines 113.992/ 995 *BA20.10-P-1002-01C 
    TORQUE SPECIFICATION Engines 113.990/ 991 *BA20.10-P-1002-01L 
6 Take off belt pulley of coolant pump (2) IMPORTANTInstallation:  Screw in bolts only by hand, do not tighten.  
7 Remove cap of compressor poly-V-belt guide pulley NOTES Carefully lever off cap with a slotted screwdriver in order to avoid damaging guide pulley.  
8 Unscrew bolt for compressor poly-V-belt guide pulley NOTES *BA13.25-P-1008-01D 
9 Take off compressor poly-V-belt guide pulley    
10 Unscrew bolts for tensioning pulley for compressor poly-V-belt IMPORTANTInstallation:  The threads for mounting tensioning device of compressor are not pretapped on a new timing case cover. For this reason a new timing case cover requires new self-cutting bolts to be used.
IMPORTANT If timing case cover was not replaced, observe torque when threads are pre-tapped.		  
    TORQUE SPECIFICATION *BA13.25-P-1006-01D 
11 Take off tensioning pulley for compressor poly-V-belt (5)    
12 Disconnect coolant hose (6) and coolant hose (7) NOTES Check condition of coolant hoses and hose clamps. Install new parts if necessary in order to avoid a loss of coolant.  
13 Loosen bolt M10x110 (4g) on alternator IMPORTANTInstallation:  The threads for mounting alternator are not pre-tapped on a new timing case cover.
For this reason a new timing case cover requires new self-cutting bolts to be used.
IMPORTANT If timing case cover was not replaced, observe torque when threads are pre-tapped.		  
    TORQUE SPECIFICATION *BA15.40-P-1005-01A 
14 Unbolt coolant pump (3) at timing case cover and remove IMPORTANTInstallation:  The threads for mounting coolant pump are not pre-tapped on a new timing case cover.
For this reason a new timing case cover requires new self-cutting bolts to be used.		  
NOTES Notes on application of sealant to coolant pump housing   AH20.10-P-0001-02RVK 
    IMPORTANT If timing case cover was not replaced, observe torque when threads are pre-tapped.  
    TORQUE SPECIFICATION Engines 113.992/ 995 *BA20.10-P-1001-01C 
    TORQUE SPECIFICATION Engines 113.990/ 991 *BA20.10-P-1001-01L 
    Loctite sealant *BR00.45-Z-1013-01A 
15 Install in the reverse order    
16 Inspect cooling system for leaks   AR20.00-P-1010RVK 
TORQUE SPECIFICATION COOLANT PUMP, COOLANT THERMOSTAT

Number Designation Engine 113.940/941/ 942/943/944/ 945/946/948/ 960/961/962/ 963/965/966/ 967/968/969/ 980/981/982/ 984/986/992 993/995
BA20.10-P-1001-01C Self-tapping screw for coolant pump to timing case Thread not pretapped M6 Nm 14
Thread not pretapped M8 Nm 35
Thread pre-tapped M6 Nm 10
Thread pre-tapped M8 Nm 25
BA20.10-P-1002-01C Belt pulley to coolant pump Nm 10
TORQUE SPECIFICATION COOLANT PUMP, COOLANT THERMOSTAT

Number Designation Engine 113.987/988/ 990/991
BA20.10-P-1001-01L Bolt, coolant pump to timing case M6 Nm 14
M8 Nm 20
BA20.10-P-1002-01L Belt pulley on coolant pump Nm 9
TORQUE SPECIFICATION BELT TENSIONING DEVICE

Number Designation Engine 113.990/ 991/992/ 993/995
BA13.25-P-1006-01D Self-tapping bolt, compressor belt tensioner to timing case cover Thread not pretapped Nm 35
Thread pretapped Nm 25
BA13.25-P-1008-01D Bolt, guide pulley for compressor and major assembly belts to timing case cover M8x78 Nm 68
TORQUE SPECIFICATION ALTERNATOR

Number Designation Engine 113.991 in models 215, 220 Engine 113.992/ 995 in model 230 Engine 113.990 in model 211
BA15.40-P-1005-01A Self-grooving screw Alternator on timing case Thread not pre-tapped Nm 57 57 57
Thread pre-tapped Nm 45 45 45
REPAIR MATERIALS

Number Designation Order number
BR00.45-Z-1013-01A Sealant A 003 989 98 20
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