Remove/install the air conditioning's (roof equipment) relay

AR83.50-D-6030B

Remove/install the air conditioning's (roof equipment) relay

18.11.2019

Model

903.662

with code Z29 (James Cook touring camper, NAFTA)

with code ZU8 (National version for USA)

Roof-mounted air conditioning system load relay at refrigerant compressor

1

Load relay

3

Electrical line

5

Electrical line

2

Electrical line

4

Electrical line

6

Nuts

 

Remove/install

 Danger

Risk of death when working on component parts and systems with U >= 30 V alternating voltage (AC) or U >= 60 V direct voltage (DC)

Do not touch damaged or defective live component parts and lines or non-insulated electrical connections and lines.

AS00.00-Z-0035-01A

 Danger

Risk of death caused by falling from vehicle roof. Risk of injury to other persons caused by falling objects during work in roof area.

Work on or in the area of the vehicle's roof may only be performed on suitable aids (ladders, scaffolds, assembly platforms). Sufficiently secure the working area.

AS65.00-Z-0002-01B

 Warning

Risk of injury caused by exiting refrigerant and by contact with the components of the refrigerant system

Wear protective clothing, safety gloves and safety glasses.

AS86.61-Z-0002-01A

1

Switch off roof-mounted air conditioning system

 See owner's manual.

2

Disconnect external 110 V feed line from vehicle

 See owner's manual.

3

Remove web-type fuse

Roof-mounted air conditioning system in the engine compartment

AR54.15-D-2100B

4

Remove roof-mounted air conditioning system cover on roof

AR83.30-D-1010A

5

Mark installation position of electric lines (2, 3, 4, 5) at load relay (1)


Swapping the electric lines (2, 3, 4, 5)
may lead to short circuit and therefore destruction of electrical component parts.

6

Unscrew nut on electric line (2)

7

Remove electric line (2) from load relay (1)

8

Unscrew nut on electric line (3)

9

Remove electric line (3) from load relay (1)

10

Unscrew screw on electric line (4)

11

Remove electric line (4) from load relay (1)

12

Unscrew screw on electric line (5)

13

Remove electric line (5) from load relay (1)

14

Unscrew nuts (6)

 Installation: Replace self-locking nuts (6).

15

Remove load relay (1)

16

Install in the reverse order

17

Perform function test

 Switch roof-mounted air conditioning system on/off (see operator's manual).