MAINTENANCE OF ROTARY TABLE DRIVE - cont

MAINTENANCE OF ROTARY TABLE DRIVE - cont - TM-5-3820-256-24-1_163

MAINTENANCE OF ROTARY TABLE DRIVE - cont - TM-5-3820-256-24-1_165

TM-5-3820-256-24-1 Drilling System Manual
Page Navigation
143

NOTE The cylinder block assembly usually comes out in one piece; however, some of the parts can separate. This does not present a problem as these parts can be assembled later. n. The swashplate (35) has a notch which locates over a pin (36) in the housing (37) to prevent improper assembly; however, mark the housing for proper orientation of the swashplate during assembly. o. The fixed swashplate (35) and shaft assembly can now be removed by grasping the shaft (34) and lifting both parts out of the housing. p. The tapered bearing (38) can be pressed off the shaft if required. Be careful not to damage the seal diameter of the shaft while removing the bearing. The bearing race (39) is press fit in the housing (37). 4-10.1.2 Inspection and Repair a. It is recommended that the entire shaft seal (4-9) be replaced. If, however, the seal is being reused, inspect each part separately for damage. b. Clean metal parts by using a solvent wash and air drying. c. If the shaft (34), bearings (19 or 38), end cap (12) or housing is replaced, the shaft end play must be checked. d. To check the shaft end play, assemble the shaft (34) and bearings (19 and 38), housing (37), end cap (12) and gasket (40). The shaft end play should be from .006" to .016". If adjustment is necessary, a shim (21) can be placed under the bearing race (18) in the end cap (12). 4-10.1.3 Assembly. a. Place the fixed swashplate (35) over the shaft-bearing (34, 39) assembly and place into housing (37) locating the notch in the swashplate on the pin (36) in the housing. b. Prior to assembly of the cylinder block, inspect the pistons (33) for contamination or excessively worn slipper pads. Replace any pistons that are found to be defective. c. To install the cylinder block assembly it is necessary to check the alignment of certain parts. There is no special relationship of pistons to bores, springs, etc. However, the alignment of the ball guide (31) and cylinder block splines is critical. The undersized tooth in the spline of the cylinder block (23) must line up with the missing tooth in the ball guide (31) spline. 4-133

Privacy Statement
Press Release
Contact