TM 10-3930-669-34 a. Removal. WARNING • Hydraulic oil is flammable.  Ensure engine is cool to prevent fire.  Injury or death to personnel could result. • Oil is slippery and can cause falls.  To avoid injury, place drain pan under stack valve before removal.  Wipe up spilled oil with wiping rags. NOTE • Inspect all hoses, lines, and fittings for cracks, bends, nicks, dents, stripped threads, and cuts.  Replace all damaged parts. • Tag and mark each hose prior to removal. (1) Remove two hoses (1 and 2) from 90° tee (3). (2) Remove tube (4) from elbow (5). (3) Remove hose (6) from elbow (7). (4) Remove two hoses (8 and 9) from fittings (10 and 11). 15-13