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Home >> Mercedes Benz >> 2001 >> S500 >> Repair and Diagnosis >> Engine Mechanical >> Cooling System (Mechanical) >> Engine Cooling System - 215 & 220 Chassis >> Retrofitting & Conversion >> Retrofit coolant preheater - AN20.30-P-0001 >> Retrofit coolant preheater - AN20.30-P-0001MMM

Retrofit coolant preheater - AN20.30-P-0001MMM

ENGINE 113.9 in MODEL 215 

Installation sequence 

Fig 1: Identifying Retrofit Coolant Preheater - Engine 113.9 In Model 215
G04840387

Line routing 

Fig 2: Identifying Tie Strap, Rubberized Hose Clamp And Connector
G04840388
REMOVING Removing     
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 the pressure. Do not pour coolant into beverage containers.
Wear protective gloves, protective clothing and safety glasses.
AS20.00-Z-0001-01A 
1 Remove lower engine compartment paneling    
REFER TO TESTING & REPAIR     AR61.20-P-1105M
2 Drain coolant IMPORTANT at radiator and crankcase  
REFER TO TESTING & REPAIR     AR20.00-P-1142HA 
3 Remove coolant hose between coolant pump and radiator IMPORTANT Vehicle coolant hose can be discarded.  
INSTALLING Install     
IMPORTANT Notes on coolant preheater   AH20.00-P-1001-01A 
4 Screw coolant preheater (20) into housing (10) TORQUE SPECIFICATION
IMPORTANT Clamp housing in vise and adjust distance with sleeves or nuts.
Use new O-ring.
*BA20.00-P-1001-01A 
    SPECIAL TOOL Fig 3
5 Attach housing (10) with coolant hose (11) to coolant pump and secure each with clamp (12)    
6 Attach housing (10) to timing case cover with two self-tapping screws (13) IMPORTANT Take great care when screwing in the self-tapping screws.  
7 Insert new bottom coolant hose (14) between housing (10) and radiator and attach each with a clamp    
8 Attach electric cable of coolant preheater (20) with rubberized clamp (15) to existing screw of oil pan TORQUE SPECIFICATION Screw to oil pan *BA01.45-P-1001-01B 
9 Continue routing along left longitudinal member to crossmember above left headlamp IMPORTANT Attach cable to existing wiring with cable strap (2).  
10 Attach retaining spring (a) with two sheet metal screws (c) to upper frame crossmember IMPORTANT Make holes for sheet metal screws with chisel.  
11 Fit cap (b) onto plug (8) and insert into retaining spring (a) IMPORTANT The plug is locked in the retaining spring (a) by turning the cap (b) clockwise.  
12 Inspect cooling system for leaks    
REFER TO TESTING & REPAIR     AR20.00-P-1010HA 
    SPECIAL TOOL Figure
    SPECIAL TOOL Figure
TORQUE SPECIFICATION OIL PAN

Number Designation Engines 113.940/941/ 942/943/944/ 945/946/960/ 961/962/963/ 965/967/968/ 969/980/981/ 982/984/986/ 992/995 Engine 113.987/ 988/991
BA01.45-P-1001-01B Bolt, oil pan to crankcase M6 Nm 9 9
M8 Nm 20 20
TORQUE SPECIFICATION COOLANT PREHEATER

Number Designation Engine 112, 113
BA20.00-P-1001-01A Coolant preheater in engine block Nm 35
Fig 3: Identifying Ring Wrench Socket (119 589 00 03 00)
G04840389
Fig 4: Identifying Tester (124 589 24 21 00)
G04840390
Fig 5: Identifying Test Cap (210 589 00 91 00)
G04840391
PARTS ORDERING NOTES

Part no. Designation Quantity
140 995 00 44 Clip 1
KG20G (see EPC) Preheater parts kit 1
KG20G (see EPC) Housing 1
210 501 53 82 Coolant hose between housing and coolant pump 1
220 501 10 82 Lower coolant hose 1
KG20G (see EPC) Screw M6, self-tapping 2