2. (20 marks) Using neat sketches, draw the correct hydraulic circuit symbols for the given components and systems, briefly explaining their functions: (A) Pressure compensated variable Displacement pump with case drain (B) 3 Position/4 way Manually activated, Spring centred, Closed Centre DCV with cross connect and straight through positions (C) 2 Position/3 way Manually Actuated Spring offset Directional Control Valve (D) Restriction type check valve (E) Pressure reducing valve (F) A pneumatic FRL unit (G) Hydraulic sequencing circuit (H) Filter with check valve bypass. (I) Reservoir with Connecting line above fluid level and vented. (J) Variable Displacement Bi-Directional Hydraulic motor

Fig: 1