Inspect cooling system for leaks

AR20.00-P-1010TQ

Inspect cooling system for leaks

22.3.05

 

Remove/install

 Danger!

Risk of injury to skin and eyes caused by scalding from contact with hot coolant spray. Risk of poisoning from 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

1

Switch on ignition

2

Adjust heater to maximum heat output

3

Open engine hood and raise to vertical position

AR88.40-P-1000TX

4

Open the cap (1) of the coolant expansion reservoir (2)

 Turn the cap (1) slowly and release the excess pressure, then unscrew the cap (1).

5

Check coolant level and anti-freeze content coolant.

If the antifreeze content of the coolant is too low, either antifreeze must be added or the coolant must be replaced.

Drain/fill with coolant

AR20.00-P-1142TQ

6

Screw on test cap (3) at coolant expansion reservoir (2).

 Test cap

*210589009100

7

Connect pressure pump (4) at test cap (3)

 Pressure pump

*124589242100

8

Discharge cooling system with test pressure

 To prevent damage to the cooling system, do not exceed the stated test pressure

Test pressure for pressure-testing cooling system

*BE20.30-P-1005-01A



Check

9

Inspect condition and installation at hose clamps; retighten or replace if necessary

6 mm socket hexagon on flexible shaft for hose clamps with worm drive

*WH58.30-Z-1001-06A

7 mm socket hexagon on flexible shaft for hose clamps with worm drive

*WH58.30-Z-1002-06A

10

Check coolant hoses and heater hoses and their connecting points for condition and coolant loss

 Replace coolant hoses and heater hoses if required.

11

Unscrew test cap (3) at coolant expansion reservoir (2).

 Slowly unscrew test cap (3) and reduce the excess pressure.

12

Install in the reverse order

Number

Designation

2-stage
cap

BE20.30-P-1005-01A

Test pressure for pressure-testing cooling system

bar gage

1.4

Number

Designation

WH58.30-Z-1001-06A

6 mm socket hexagon on flexible shaft for hose clamps with worm drive

WH58.30-Z-1002-06A

7 mm socket hexagon on flexible shaft for hose clamps with worm drive