MAINTENANCE OF WATER INJECTION SYSTEM - cont

MAINTENANCE OF WATER INJECTION SYSTEM - cont - TM-5-3820-256-24-1_139

MAINTENANCE OF WATER INJECTION SYSTEM - cont - TM-5-3820-256-24-1_141

TM-5-3820-256-24-1 Drilling System Manual
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q. Inspect housing (28) assembly for cracks, the machined surfaces for nicks, burrs, brinelling, or corrosion. Remove burrs that can be removed without changing dimensional characteristics. Inspect tapped holes for thread damage. If the housing is defective in these areas, discard the housing assembly, and disassembly is complete. r. If the housing assembly has passed inspection to this point, inspect the bearings (29, 30 and 32) and thrust washers (31). The bearing rollers must be firmly retained in the bearing cages, but must rotate and orbit freely. All rollers and the thrust washers must be free of brinelling and corrosion. If assembly passes inspection at this point, do not disassemble farther. s. Place housing back in vise, wearplate end up. Insert a 1.38 in. (35.1 mm) diameter bearing puller through bearing (30). Remove and discard bearing. t. Remove and discard thrust washers (31), thrust bearing (32) and backup washer (34). Using retaining ring pliers, remove retaining ring (35). u. Invert housing (28) in vise and clamp on mounting flange. Insert a puller for a 1.00 inch (25.4 mm) diameter bearing through outer bearing (29). Remove and discard bearing. 4-8.3.2 Assembly and Installation. NOTE Lubricate all seals and seal rings with hydraulic oil before assembly. Unless-otherwise indicated, do not oil or grease other parts before assembly. If a service housing and commutator assembly is being used, the housing components are already installed. Start with step g. a. Install retaining ring (35). Be sure the rounded edge of ring is facing the larger housing cavity. b. Thoroughly grease the rollers of a new bearing (29), then press the bearing into housing (28) using a bearing mandrel against the lettered end of bearing cage. Press bearing squarely to a depth of .135/.125 inch (3.43/3.18 mm) from the flange end of the housing. c. Place housing (28) on clean flat surface, wear plate end up. Apply a small amount of grease to seal (33). Install backup washer (34) then seal (33) into housing. Seat the backup washer against the retaining ring (35) and seal against washer with seal lip facing out. d. Install thrust washers (31) and thrust bearing (32) into housing and seat in bore. e. Using a bearing mandrel against the lettered end of bearing cage, press bearing (30) into housing (28) squarely to a depth of 1.618/1.598 inches (41.10/40.59 mm) from the housing wearplate face. 4-109

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