Remove/Install Stationary Heater Unit - AR83.70-P-5302S

Model 223 

with code 228 (Additional warm water heating) 

Fig 1: Stationary Heater Unit Components Location - Model 223 With Code 228

Courtesy of MERCEDES-BENZ USA

	Risk of explosion  caused by fuel igniting, risk of poisoning caused by inhaling and swallowing fuel as well as risk of injury to eyes and skin caused by contact with fuel.	No fires, sparks, open flames or smoking. Pour fuels into suitable and appropriately marked containers only. Wear protective clothing when handling fuel.	AS47.00-Z-0001-01A
	Risk of explosion  caused by fuel vapors igniting, risk of poisoning caused by inhaling combustible gases and risk of injury caused by burns during and after operation of heater unit	Do not operate stationary heater, auxiliary heater or engine with heater booster in closed rooms or when refueling. Allow heater unit to cool down after operation and wear protective gloves.	AS83.70-Z-0002-01A
	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 overpressure. Do not pour coolant into beverage containers. Wear protective gloves, protective clothing and safety glasses.	AS20.00-Z-0001-01A
Notice	Notes on coolant	Model 223 with engine 176, 256, 656 with code 228 (Additional warm water heating)	AH20.00-P-2080-01KOA
Notice	Information on preventing damage to electronic components due to electrostatic discharge		AH54.00-P-0001-01A
	Notes on safety-relevant components		AH00.00-Z-0019-01A
	Remove/install
1	Perform commissioning of the stationary heater.	When replacing stationary heater unit (8).
			AD00.00-P-2000-06FR
2	Remove right front wheel.		AR40.10-P-1102A
3	Remove front fender.	Model 223 with code 228 (Additional warm water heating)
		Model 223.0/1 with code 228 (Additional warm water heating)	AR88.10-P-1005S
4	Drain off coolant.	Model 223 with engine 176 with code 228 (Additional warm water heating)	AR20.00-P-1142SC
		Model 223 with engine 256.9 with code 228 (Additional warm water heating)	AR20.00-P-1142SB
		Model 223 with engine 656 with code 228 (Additional warm water heating)	AR20.00-P-1142S
5	Remove nut (1).
6	Release clamp (2) and remove exhaust pipe (3).
7	Remove bracket (4).	Screw, support to body	*BA83.70-P-1004-02I
8	Remove coolant hoses (5) from coolant lines.	Collect escaping coolant with a suitable container. Seal using suitable stop plug.
		Record plug	Fig 2
9	Remove fuel hose (6) from fuel line.	Seal using suitable stop plug.
		Record plug	Fig 2
10	Remove nut (7).
11	Remove stationary heater unit (8) with holder from body.
12	Remove stationary heater unit (8) from holder.	When replacing stationary heater unit (8).
13	Install in the reverse order.
14	Carry out function check of stationary heater.	If the stationary heater unit (8) switches off automatically before reaching its operating temperature and cannot be restarted, a fault interlock is present. If a fault interlock is present. ↓ Rectify fault interlock with vehicle diagnosis system.
			AD00.00-P-2000-06FR

Fig 2: Identifying Record Plug (129 589 00 91 00)

Courtesy of MERCEDES-BENZ USA