MAINTENANCE OF WATER INJECTION SYSTEM - cont

MAINTENANCE OF WATER INJECTION SYSTEM - cont - TM-5-3820-256-24-1_140

MAINTENANCE OF WATER INJECTION SYSTEM - cont - TM-5-3820-256-24-1_142

TM-5-3820-256-24-1 Drilling System Manual
Page Navigation
120

f. Invert housing (28) on work surface. Apply a small amount of grease to a new seal (27) and press the seal into the housing. Be sure seal is not cock or deformed when installed. g. Clamp housing (28) in soft-jawed vise, clamping on mounting flange, with coupling shaft bore down. NOTE The assembly of the rotor set (16) should be done at this time in order to use the housing in the vise as an assembly "fixture." h. Place wearplate (20) then stator (19) on the housing (28) and align the screw holes. Insert two screws (13) finger tight approximately 180 apart to retain the parts in place. i. Assemble the rotor (18) into the stator (19) with six vanes (17), or as many as will readily fit, into the stator vane pockets. NOTE The drive link (23), held in large locking pliers between two rods or nails to protect the drive link splines, will be required to rotate the rotor. j. Rotate the rotor (18) with the drive link (23) to seat the rotor and assembled vanes into the stator (19). Assemble the seventh, or remaining, roller vanes (17) using minimum force. CAUTION Too much force used to push the rotor vanes into place could shear off the coating applied to the stator vane pockets. Use care during this procedure to prevent damage to rotor set and the drive link splines. k. Remove the drive link (23), the two screws (13), then the assembled rotorset (16) and wearplate (20)as a unit from the housing and set them aside for later installation. NOTE The coupling shaft (25) has a timing mark on the small (output) end that is radially in line with two internal spline teeth and a "commutator drive pin slot" that transverses the opposite end of the coupling shaft. The "commutator drive pin slot" indicated by the timing mark is the only slot of two oil passage slots across the large end of the coupling shaft, wide enough to engage the commutator drive pin (26) at assembly. This orientation of the coupling shaft splines and drive pin slot is important to subsequent assembly procedures that will produce the required rotor (18) lobe and commutator (24) "fixed" radial relationship at assembly. Using chalk or marking pencil, extend the timing mark that is on the end of coupling shaft (25) up the side of the coupling shaft so that the timing mark location will be visible for alignment purposes when the coupling shaft is assembled into the housing held in the vise. 4-110

Privacy Statement
Press Release
Contact