BUSHINGS AND BUSHING-TYPE BEARINGS

TM-9-2350-261-34 Carrier Personnel Full Tracked Armored M113A2 2350-01-068-4077 Carrier Command Post Light Tracked M577A2 2350-01-068-4089 Manual
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TM 9-2350-261-34 g. BUSHINGS AND BUSHING-TYPE BEARINGS. ( 1 ) Replace bushings and bushing–t ype bearings if they are loose. scored, or have color change due to heat. When you replace bushings and bushing–type bearings, check nearby parts for damage or wear. CAUTION Damaged housing bore can cause equip- ment failure. Do not damage housing bore when cutting bushings. NOTE Do not remove bushings and bushing–type bearings unless replacement is necessary and authorized. Removal usually damages these parts. (2) Remove bushings and bushing–type bearings by pressing them out. Use a suitable arbor press or special tools. It may be necessary to remove bushings in blind holes with a saw or by using a narrow cap chisel. (3) Install bushings or bushing–type bearings by alining them in casting or retaining cage. Press bushing or bushing–type bearings into place with suitable arbor press or with special tools. h. OIL/GREASE SEALS. Seals must be replaced when seal lip shows signs of wear, brittleness, cracks or damage. Replace seal if tension spring or seal shell is damaged. ( 1 ) Press damaged oil seal from casting. Be careful not to damage bore. WARNING Dry cleaning solvent P–D-680 is toxic and flammable. Always use in an open area with good air flow, away from sparks, heat, or flames. Wear goggles and gloves. Do not breathe vapors. Avoid contact with skin, eyes, and clothes. If you get dizzy while using solvent, breathe fresh air and get medical help. If solvent gets on hands, wash them. If solvent gets in eyes, flush eyes with fresh water and get medical help immediately. Keep fire extinguisher nearby. (2) When seal bore is damaged so a lubricant–tight seal is impossible, replace casting or adapter. Remove slight nicks, burrs, and scratches with crocus cloth (Item 17, App C ) dipped in cleaning solvent (Item 18, App C). (3) Install new seal in casting bore or adapter using suitable oil seal replacement tool. i. PREFORMED PACKINGS AND GASKETS. Preformed packings and gaskets should be replaced when removed unless otherwise stated in the maintenance task. They should not be reused. 2-14

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