8 OPERATION D. 02 : Work on the hydraulic system REFILLING. 8: On vehicles produced since September 1967. - Place the plug (1) on the flexible pipe (3). Insert the flexible tube (3) into the spring-clip (2). 9. Clean the reservoir filter - with alcohol for the 1.H.S.2. fluid, - with petrol or white spirit for the L.H.M. fluid Blow it through with compressed air. 10, Refill the reservoir with hydraulic fluid (LHS 2 or LHM as appropriate ).