Removing and installing stationary heater

AR83.70-P-5302B

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 front bottom section of sound-proving capsule

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 protetive goggles.

AS20.00-Z-0001-01A

3

Relieve pressure in coolant circuit

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

4

Clamp off cooling lines (1 and 2) of vehicle side hot water circulation pump (M13) and coolant expansion line (5)



*000589543700

5

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

 Catch coolant draining 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)



*000589403700

7

Unscrew nuts (8) for mounting heater on longitudinal frame member

8

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

 Support heater from below before unscrewing nuts.

9

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

 

Disassembly, assembly

10

Remove exhaust line (14) from heater

11

Clamp off coolant feed and coolant outlet lines (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



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

*BA83.70-P-1009-01A

13

Install in opposite order

Checking

14

Bleed coolant circuit after installing heater

AR83.70-P-5302-01B

15

Check cooling system for leaks

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 mount on heater

Nm

10