Check pressure in engine cooling system

AR20.00-W-1014NA

Check pressure in engine cooling system

06.11.2017

Engine

934.9, 936.9 in model 967

1

Hose

2

Adapter

1

Hose

3

Stopcock

4

Tester

 Warning

Risk of injury to skin and eyes suffering scalding from contact with hot coolantspray. 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

Installing

1

Open front flap

2

Remove cap on the expansion reservoir

3

Attach adapter (2) to expansion reservoir

 Tester

*967589002100

4

Place hose (1) on adapter (2) and route it into the cab via the front-passenger window

5

Fold down front-end flap and engage it carefully on the driver's side

Only if a test drive is performed.

6

Hook test equipment (4) onto instrument panel

7

Place hose (1) on test equipment (4)

8

Close stopcock (3)



Check

9

Start engine and check pressure in engine cooling system

 To perform an assessment and for troubleshooting, take into account the TIPS document "Coolant loss at the coolant expansion reservoir while driving" in function group 20.30.

 The safety valve on the test equipment (4) opens as from 1.5 bar.

If the pressure in the engine cooling system exceeds 1.4 bar.



The test must be canceled or the pressure must be released via the stopcock (3).

Remove

10

Open front flap

Only if a test drive has been performed.

11

Remove the test equipment (4), hose (1) and adapter (2)

12

Install the cap on the expansion reservoir

13

Close front flap