TM 9-2320-386-10 Change 1 3-23 3-7. CHECKING FLUID LEVELS (Contd) d. Front Winch Hydraulic Oil Reservoir Level. CAUTION Before opening hydraulic reservoir, ensure area around reservoir filler cap is clean. Do not allow dirt, dust, or water to enter reservoir. Failure to do this may cause damage to internal components. (1) Check oil level through sight glass (6) on hydraulic oil reservoir (5). (2) If oil level is not seen in sight glass (6), remove cap (4) and add oil as necessary (table 2-2). Fill hydraulic oil reservoir (5) until oil level is centered in sight glass (6). e. Master Cylinder Reservoir Oil Level. WARNING Clean master cylinder reservoir filler cap and surrounding area before removing cap. System contamination may result in injury to personnel or damage to equipment. (1) Remove two filler caps (7) from master cylinder reservoir (8). (2) Check that oil level is to bottom ring of opening. (3) Fill master cylinder reservoir (8) to bottom ring of opening as necessary (table 2-2). (4) Install two filler caps (7) on master cylinder reservoir (8). 4 5 6 7 8