TM10-3930-660-20 11-3. AXLE ASSEMBLIBS -   SERVICE  (Cont’d) b. Remove axle drain plug (3) from the bottom of axle (1) and allow oil to drain from axle (1) completely. c. Install axle drain plug (3) to axle  (1)0 d. Add oil to axle (1) as described in steps 1 through 3 of this section. 5. IF NECESSARY, CHECK AXLE VENTING HOSE (4) FOR OBSTRUCTIONS. REMOVE OBSTRUCTIONS AS REQUIRED. The axles are vented to release pressure caused by axle oil expansion. A venting hole is located at the top of each axle. On the rear axle, the venting hole is on the left-hand side. On the front axle, the venting hole is on the right-hand side. Each venting hole is connected by a hose to a frame-mounted breather. Cleaning procedures for both front and rear axle venting hoses are essentially similar. a. b. c. d. Remove elbow (5) from axle (1). Remove nut (6), and lockwasher (7) securing hose support (8) to vehicle frame stud. Discard lockwasher  (7). Remove elbow (5), hose support (8), hose (4), and breather (9) from vehicle frame stud as an assembly. Remove elbow (5), breather (9) and hose support (8) from hose (4). Front axle shown - rear axle similar e. Inspect hose (4) for obstructions. If present, clear obstructions from hose (4). f. Install elbow (5), breather (9) and hose support (8) to hose (4). g. Position elbow (5), hose (4), hose support (8) and breather (9) as an assembly on vehicle frame stud. h. Secure hose support (8) to vehicle frame stud with nut (6) and new lockwasher  (7). i. Install elbow (5) to axle (1). 6. REMOVE BLOCKING MATERIAL FROM WHEELS OF  VEHICLE. 11-3

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