Retrofitting coolant preheater - AN20.30-P-0001H

ENGINE 112.9 in MODELS 210.061 /063 /065 /081 /082 /261 /265 /281 /282 /663

ENGINE 113.940 in MODELS 210.070 /270

Installation sequence with engine 112, 113

Fig 1: Locating Engine Block Heater, Housing And Clamps

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Installation sequence with engine 112

Fig 2: Locating Tie Strap, Cable Clamps And Connector

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Installation sequence with Engine 113

Fig 3: Locating Bracket, Cable Clamps And Retaining Spring

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

	Removing
	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	Drain coolant	at radiator and crankcase
			AR20.00-P-1142HA
2	Remove lower engine compartment paneling
			AR61.20-P-1105AB
3	Remove viscous fan clutch and radiator shroud
			AR20.40-P-5660C
	Installing
	Notes on coolant preheater		AH20.00-P-1001-01A
4	Screw coolant preheater (20) into housing (10)	Clamp housing in vise and adjust distance with sleeves or nuts. Use new O-ring.	*BA20.00-P-1001-01A
			Figure
5	Connect housing (10) to coolant pump with hose (11)
6	Screw housing (10) onto timing case cover with self-tapping screws (13)	Take special care when screwing in self-tapping screws.
7	Fasten hose (11) with clamps (12)
8	Install and tighten new lower water hose (14) between housing (10) and radiator
9	Fasten electric cable of coolant preheater (20) to oil pan using rubberized clamps (15),		*BA01.45-P-1001-01B
10	Continue routing along left longitudinal member to crossmember above left headlamp	Fasten cable to existing wiring with tie strap (2).
11	Unscrew nuts (3) to the left of wheelhouse and window washer fluid reservoir. Insert bracket 210 545 29 40 and mount windshield washer reservoir	Place to the side the window washer fluid reservoir
12	Fasten retaining spring (a) to bracket (9) with cap (b) and self-tapping screws (c)
13	Hang cable plug (8) in retaining spring and attach cap (b)
14	Install viscous fan clutch and radiator shroud
			AR20.40-P-5660C
15	Inspect cooling system for leaks
			AR20.00-P-1010HA
			Fig 6
			Figure

Oil pan

Number	Designation			Engines 112.910/911/ 912/913/914/ 915/917/920/ 921/922/923/ 940/941/942/ 943/944/945/ 946/947/949/ 951/954/955/ 960/961/970/ 972/973/976	Engines 113.940/941/ 942/943/944/ 945/946/960/ 961/962/963/ 965/967/968/ 969/980/981/ 982/984/986/ 992/995
BA01.45-P-1001-01B	Bolt, oil pan to crankcase	M6	Nm	9	9
BA01.45-P-1001-01B	Bolt, oil pan to crankcase	M8	Nm	20	20

Coolant preheater

Number	Designation		Engine 112, 113
BA20.00-P-1001-01A	Coolant preheater in engine block	Nm	35

Fig 4: Identifying Counterholder (111 589 00 40 00)

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Fig 5: Identifying Ring Wrench Socket (119 589 00 03 00)

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Fig 6: Identifying Tester (124 589 15 21 00)

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Fig 7: Identifying Test Cap (210 589 00 91 00)

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Fig 8: Identifying Open-End Wrench bit (111 589 02 01 00)

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Parts ordering notes

Part no.	Designation	Quantity
140 995 00 44	Clip	1
601 200 00 96	Preheater parts kit	1
210 545 29 40	Bracket	1
112 203 00 61	Housing	1
210 501 53 82	Coolant hose	1
210 501 38 82	Coolant hose on M112	1
210 501 48 82	Coolant hose on M113	1
001 990 63 22	Screw M6, self-tapping	2