TM 9-2320-361-34 15-48. HYDRAULIC CYLINDER REPAIR THIS TASK COVERS: a. Disassembly c. Assembly b. Inspection INITIAL SETUP APPLICABLE MODELS M764 TOOLS General mechanic’s tool kit (Appendix B, Item 1) MATERIALS/PARTS Three lockwashers (Appendix F, Item 131) O-ring (Appendix F, Item 173) Cotter pin (Appendix F, Item 5) Washer (Appendix F, Item 267) Packing, preformed (Appendix F, Item 181) Packing set (Appendix F, Item 185) Lubricating oil, OE/HDO 30 (Appendix C, Item 13) REFERENCES (TM) LO 9-2320-209 -12-1 TM 9-2320-361-10 TM 9-2320-361-34P EQUIPMENT CONDITION “ Parking brake set (TM 9-2320-361-10). . Hydraulic tank drained (LO 9-2320-209-12-1). ● Outrigger leg removed and disassembled (para. 15-47). a. Disassembly NOTE Have drainage container ready to catch oil. 1. 2. 3. 4. 5. 6. 7. 8. 9. Pull rod (7) from cylinder (18) as far as possible and drain oil into container. Remove tubes (16) and (19) and connectors (17) and (20) from cylinder (18). Loosen cylinder head (8) and remove rod (7) from cylinder (18). Remove cotter pin (15), nut (14), two retaining plates (10), two cups (12), follower (13), and preformed packing (11) from rod (7). Discard cotter pin (15) and preformed packing (11). Remove cylinder head (8) from rod (7). Remove O-ring (9) from cylinder head (8). Discard O-ring (9). Remove three screws (6), lockwashers (5), retainer (3), and rod wiper (4) from cylinder head (8). Discard lockwashers (5). Remove rod wiper (4) from retainer (3). Remove packing set (2) and washer (1) from cylinder head (8). Discard packing set (2) and washer (1). b. Inspection Inspect all parts for bends, cracks, chips, grooves, burrs, and scoring. Replace if damaged. NOTE Install packing set with tapered end toward washer. 1. Coat packing set (2) with oil and install new washer (1) and packing set (2) in cylinder head (8). 2. Install rod wiper (4) in retainer (3). 3. Install retainer (3), wiper (4), three new lockwashers (5), and screws (6) on cylinder head (8). 15-210