Removing and installing stationary heater

AR83.70-P-5302AP

Removing and installing stationary heater

27.4.98



Removal



General repair notes on stationary heater

AH83.70-P-0001-03D



If it is not economical to repair the Thermo Top S heater install new Thermo Top S heater

Installing Thermo Top S heater

AR83.70-P-5302P

 Danger!

Fuel vapors present an explosion hazard. Combustion gases are toxic when inhaled. Heater can cause severe burns during and after operation.

Do not start up or operate stationary heaters or engines with heater boosters in closed rooms or in the vicinity of service stations. Allow heater to cool off after operation and wear protective gloves.

AS83.70-Z-0002-01A

1.1

Remove bottom section of front sound-proofing capsule

AR94.30-P-5300A

1.2

Remove bottom engine compartment paneling

AR61.20-P-1105A

2

Remove right wheelhouse inner fender cover

Danger!

Danger of severe burns to skin and eyes from hot coolant spewing out. Coolant is toxic when swallowed

Open cooling system only when coolant temperature is below 90 °C. Open cover slowly and relieve pressure. Do not fill beverage containers with coolant. Wear protective gloves, protective clothing and protective goggles.

AS20.00-Z-0001-01A

3

Relieve pressure in coolant circuit

 For this purpose open cap on coolant expansion reservoir to catch position 1.

4

Remove air cleaner

AR09.10-P-1050A

5

Clamp off coolant hoses (3, 4) in engine compartment



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6

Disconnect connectors (9, 10) from electrical connection lead

7

Separate coolant feed line (4) and drain coolant

 Catch coolant running out in a clean vessel and add to coolant expansion reservoir after installing heater.

8

Loosen screw (17), unhook tensioning lug (18) and pull heater (A6) out of mount (11)

Installation: Check exhaust sealing ring, if necessary replace. Ensure that exhaust sealing ring is seated properly.

9

Separate coolant outlet line (3)

 Catch coolant running out in a clean vessel and add to coolant expansion reservoir after installing heater.

10

Separate fuel feed line (7)

 Catch fuel running out.



Installation

11

Install in opposite order

12

Bleed coolant circuit after installing heater

AR83.70-P-5302-01A



Checking

13

Check stationary heater for proper function, diagnosis

 On model 202 the display comes on when the "immediate heat" button on the stationary heater timer (N34) is pressed.

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14

Check cooling system for leakage

AR20.00-P-1010HA