Check control unit.

AR09.40-W-5910-02J

Check control unit.

ENGINE

900.9 in MODEL 375.1, 970, 972, 975, 976

ENGINE

902.9 in MODEL 375.1, 970, 972, 974, 975, 976

ENGINE

902.9 in MODEL 375.3, 950.5/6, 952.5/6, 953.6, 954.5

ENGINE

902.9 in MODEL 957

without CODE MS8 (Natural gas engine)

ENGINE

924.9 in MODEL 970, 972, 974, 975, 976

ENGINE

925.9 in MODEL 970, 972, 974

ENGINE

926.9 in MODEL 950.5/6, 952.5/6, 953.6, 954.5, 957

1

Check control unit (1) for external damage.

 In case of damage to the control canister (1) the turbocharger (3) must be replaced.

2

Disconnect hose (4) from control canister (1).

3

 Attach testing unit (5) (without a coolant connection) to the control canister (1) and apply a max. of 1 bar air pressure.

 In the case of a damaged diaphragm the compressed air generated escapes between the valve rod (2) and the housing (arrow) of the control canister (1). In case of a complaint the turbocharger (3) must be replaced.

4

 Remove testing unit (5) and attach hose (4) to control unit (1).