IMPORTANT! Handle empty accumulator tanks in compliance with local regulations.

12.2025 Scania SDP3 2.68.2 Diagnosis & Programming Truck Software Download and Installation

Relieving the pressure

1 Close the return valve. Unscrew the pressure limiting valve.

2 Connect the return hose from the filling

equipment return connection to the union marked Y/Z or L3/L4 on the accumulator as illustrated.

3 Open the return valve on the filling

equipment. The oil will now be returned to the filling equipment tank.

4 Oil can be drained from the pipe using

compressed air. The connections on the

master cylinder and centering cylinder must then be undone.

5 Remove the protective cap on the gas side of the accumulator tank.

6 Undo the plug on the gas side max 2 turns and allow the gas to seep out.

7 Remove the plug completely

1 Protective cap

2 Plug

1 Drain the coolant by connecting quick-fit coupling 99 301 to the bottom of the

radiator. Remove the radiator cap to make the coolant drain faster.

2 Put the retarder lever in position 5 and

switch on the ignition. This empties out

most of the oil volume from the

accumulator so that all the oil ends up in the retarder sump.

3 Remove the oil plug 1 under the planetary gear section and drain the oil.

4 Disconnect the hoses from the retarder.

5 Remove the oil filter 2.

6 Detach the hose 3 from the oil accumulator.

7 Blow out any remaining oil using compressed air at connection 4.

Heavy Duty Machine Repair Guide