Removing and installing stationary heater

AR83.70-P-5302G

Removing and installing stationary heater

7.9.10

 

Removal, installation



Distinguishing features, stationary heater, stationary preheater/heater booster

Model 210

AH83.70-P-0003-01B

 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

Remove bottom section of sound-proofing capsule at front

AR94.30-P-5300AB

2

Remove air cleaner

 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 reduce 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, turn coolant expansion reservoir cap to catch "1"

4

Clamp off coolant lines (1 and 2) on vehicle side coolant circulation pump (M13) and coolant expansion line (5)



*000589543700

5

Disconnect coolant feed and coolant outlet lines (4 and 3) from pipes

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

6

Clamp off fuel feed line (7) and disconnect from heater (A6)



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7

Unscrew nuts (8) from heater mount on longitudinal frame member

8

Unscrew nuts (6) for heater mount below right headlamp unit

 Before unscrewing nuts support heater from below

9

Move heater (A6) downward and out together with bracket (11) and unclip connectors (9 and 10) on electrical connection leads

 

Disassembly, assembly

10

Remove exhaust line (14) from bracket and heater

 On vehicles with stationary preheater, an exhaust muffler is mounted on the bracket.

11

Clamp off coolant feed and coolant outlet line (4 and 3) and combustion air intake line (12) on heater

12

Unscrew screws (13) on both sides of bracket (11) and remove bracket from heater



*BA83.70-P-1009-01A

13

Install in opposite order

Checking

14

Bleed coolant circuit after installing heater

AR83.70-P-5302-01D

15

Check cooling system for leakage

AR20.00-P-1010HA

16

Perform heater booster diagnosis, function check

AD83.70-P-3004A

17

Start up stationary preheater

 If the heater (A6) switches off automatically before reaching the operating temperature and cannot be restarted a malfunction lockout is present (continue with ).

AZ83.70-P-5302-08B

Eliminate malfunction lockout

AR83.70-P-5302-07B

Number

Designation

Models
170, 202, 208, 210
with Thermo Top C heater

BA83.70-P-1009-01A

Screw for heater mount

Nm

10