Remove/install heater unit - AR83.70-P-5302GM
MODEL 463.244 /245 /250 with ENGINE 112.945 with CODE (H12) Auxiliary heater
MODEL 463.247 /248 /254 with ENGINE 113.962 with CODE (H12) Auxiliary heater
MODEL 463.243 with ENGINE 113.982 with CODE (H12) Auxiliary heater
MODEL 463.270 /271 with ENGINE 113.993 with CODE (H12) Auxiliary heater
MODEL 463.309 /332 /333 with ENGINE 628.962 with CODE (H12) Auxiliary heater
MODEL 463.303 /340 /341 with ENGINE 642.970 with CODE (H12) Auxiliary heater
MODEL 463.202 /222 /236 with ENGINE 273.969 with CODE (H12) Auxiliary heater
MODEL 463.306 /336 /346 with ENGINE 642.886 with CODE (H12) Auxiliary heater
Illustrated on model 463.333
| Remove/install | |||
| 1.1 | Remove air filter | Engine 628.962 in model 463.309/332/333 | AR09.10-P-1050GD |
| 1.2 | Remove engine compartment cover with integrated air filter from cylinder head covers vertically upward | Engine 112.945 in model 463.244/245/250, Engine 113.962 in model 463.247/248/254, Engine 113.982 in model 463.243 |
|
| 1.3 | Remove air filter housing | Engine 113.993 in model 463.270/271 | AR09.10-P-1150GX |
| Engine 273.969 in model 463.202/222/236 | AR09.10-P-1150GZG | ||
| 1.4 | Remove left-hand air filter housing | Engine 642.970 in model 463.303/340/341 Engine 642.886 in model 463.306/336/346 |
AR09.10-P-1150GY |
| 2 | Remove left hot film mass air flow sensor (B2/6) together with air intake pipe | Only on engine 628.962 in model 463.309/332/333 | AR07.07-P-1454GD |
| 3 | Remove splash guard in wheel well | ||
| Risk of injury to skin and eyes caused by scalding from contact with hot coolant spray. Risk of poisoning caused by 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 | |
| 4 | Release pressure in coolant circuit | ||
| 5 | Remove STH air filter (1) | ||
| 6 | Detach coolant feed hose (4) and coolant outlet hose (3) | Fig 2 | |
| 7 | Remove coolant feed hose (4) from STH or HB heater unit (A6) | ||
| Notes on coolant | All engines | AH20.00-N-2080-01A | |
| 8 | Remove coolant outlet hose (3) from coolant recirculation pump | ||
| Notes on coolant | All engines | AH20.00-N-2080-01A | |
| 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 areas or when refueling. Allow heater unit to cool down after operation and wear protective gloves. | AS83.70-Z-0002-01A | |
| 9 | Remove fuel line (5) from STH or HB heater unit (A6) | ||
| 10 | Detach control line connector (6) and power supply connector (7) | ||
| 11 | Remove exhaust line (9) from STH or HB heater unit (A6) | ||
| 12 | Remove STH or HB heater unit (A6) | ||
| 13 | Remove circulation pump (A6m1) | AR83.70-P-5700GM | |
| 14 | Install in the reverse order | ||
| 15 | Pour in coolant | Model 463.244/245/250 with engine 112.945 model 463.247/248/254 with engine 113.962 model 463.243 with engine 113.982 | AR20.00-P-1142HA |
| Model 463.270/271 with engine 113.993 Model 463.202/222/236 with engine 273.969 |
AR20.00-P-1142GX | ||
| Model 463.309/332/333 with engine 628.962 model 463.303/340/341 with engine 642.970 Model 463.306/336/346 with engine 642.886 |
AP20.00-P-2080G | ||
| 16 | Bleed coolant circuit after completing installation of STH or HB heater unit (A6) | AR83.70-P-5302-01E | |
| 17 | Check condition of cooling system | AP20.00-P-2050G | |
| 18 | Perform initial startup of STH or HB heater unit (A6) | ||
| Connect STAR DIAGNOSIS and read out fault memory | AD00.00-P-2000-04A |