Inspecting cooling system for leaks

AR20.00-P-1010EW

Inspecting cooling system for leaks

5.2.09



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

Adjust heater to maximum heat output

2

Unscrew cap slowly on expansion reservoir (2) and relieve overpressure

3

Check coolant level and antifreeze content coolant

Correct if necessary.

4

Screw test cap (1) onto expansion reservoir (2)



*210589009100

5

Connect pressure pump (3) at test cap (1)



*124589242100

6

Apply test pressure to cooling system

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

Test pressure

*BE20.30-P-1005-01A



Checking

7

Check Henn couplings for all coolant hoses

 Check Henn coupling for its condition and seating; replace detent springs on Henn couplings if necessary.

See Open and close Henn coupling.

AR09.41-P-1311-01AL

8

Check coolant and heating hoses as well as their connecting points

 Check condition and coolant loss; replace coolant and heating hoses or their O-ring if required.



Install

9

Unscrew tester cap (1) on expansion reservoir (2) slowly and reduce overpressure

10

Remove pressure pump (3)

11

Check coolant level

12

Screw cap onto expansion reservoir (2)

Number

Designation

2-stage
cap

BE20.30-P-1005-01A

Test pressure for pressure-testing cooling system

bar gage

1.4