TM 10-3930-669-20 17-10.  MAIN HYDRAULIC SYSTEM HOSE AND TUBE REPLACEMENT (CONT). (i) Remove hose (13) from elbow (31) and fitting (32). (j) Remove hose (14) from elbow (33) and fitting (34). (k) Remove hose (18) from elbow (35) and fitting (36). (l) Remove hose (19) from elbow (37) and fitting (38). (m) Remove hose (24) from two 45' elbows (39 and 40). (2) Installation. (a) Install hose (24) on two 45' elbows (39 and 40). (b) Install hose (19) on elbow (37) and fitting (38). (c) Install hose (18) on elbow (35) and fitting (36). (d) Install hose (14) on elbow (3'3) and fitting (34). (e) Install hose (13) on elbow (31) and fitting (32). 17-54