Inspecting cooling system for leaks

AR20.00-P-1010RQ

Inspecting cooling system for leaks

15.1.10



Removing

 Danger!

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

Set heating to maximum heating capacity

3

Slowly unscrew cap from expansion reservoir (1) and relieve overpressure



Checking

4

Check coolant level and antifreeze content of coolant and correct



Notes on coolant

AH20.00-N-2080-01A



Notes on coolant level

AH20.00-P-1142-01CW

5

Connect pressure pump (3) with tester cap (2) to expansion reservoir (1)



*210589009100



*124589242100

6

Apply test pressure to cooling system

 To prevent damaging the cooling system, do not exceed specified test pressure!

Test pressure

*BE20.30-P-1005-01A



Checking

7

Check Henn couplings for all coolant hoses

 Check the condition and seating of Henn couplings. Replace catch springs of the Henn couplings if necessary.

See open and close coolant line coupling

AR20.20-P-7441-01RQ

8

Check coolant and heating hoses as well as their connecting points

 Check condition of coolant and coolant loss, replace the coolant and heating hoses or their O-rings as required.



Install

9

Unscrew test cap (2) from expansion reservoir (1) and remove pressure pump (3)

10

Check and correct coolant level



Notes on coolant level

AH20.00-P-1142-01CW

11

Screw cap onto expansion reservoir (1)

12

Switch off ignition

Number

Designation

2-stage
cap

BE20.30-P-1005-01A

Test pressure for pressure-testing cooling system

bar gage

1.4