GENERAL The operator can easily adjust headstock spindle bearing, drive belt tension, cross slide and top slide and front and rear carriage gibs, and take up any end play in the leadscrew. HEADSTOCK SPINDLE BEARING ADJUSTMENT 1. Remove hex head nut and lock washer securing handwheel or spacer to drive shaft. Remove handwheel or spacer from drive shaft. 2. Take off two hex nuts and two Allen screws and remove front half of belt cover. 3. Remove three drive belts. 4. Remove drive pulley from headstock spindle. 5. Remove two hex head screws and washers to take off rear half of belt cover. LEADSCREW ADJUSTMENT - 13-19" REGALS 1.
Remove fillister head screw securing slip gear cover to lathe bed, remove the cover. 2. Remove the back box. 3. Take out two fillister head screws securing leadscrew bushing to side of quick change box. Engage the half-nuts on the leadscrew. 4. Move the carriage toward the tailstock end suffi- ciently to allow the withdrawal of the bushing. 5. Draw up the adjusting nut on the end of the leadscrew that extends through the bushing until there is no end play in the leadscrew. 6. Replace all parts. LEADSCREW ADJUSTMENT - 21-24" REGALS 1. Tighten hex nut at end of leadscrew (A) 2. Tighten adjusting nut (B) to remove all end play. ADJUSTING CROSS SLIDE AND TOP SLIDE GIBS 1.
Loosen the gib screw at the small end of the gib, which is the end farthest from the operator. 2. Tighten screw at large end of the gib. 3. Repeat till a slight drag is felt when moving the slide. Be sure gib screws contact gib at both ends. ADJUSTING CARRIAGE FRONT GIB 1. Remove front carriage gib by taking out hex head cap screw. 2. Scrape metal from the gib surface that contacts the underside of the carriage. 3. Replace front gib and secure with hex head cap screw. 4. Repeat til the gib takes a bearing on the bed. ADJUSTING CARRIAGE REAR GIB The carriage rear gib is adjusted by moving it ver- tically upward.
To adjust gib, loosen two hex head screws holding gib against the rear wall of the carriage and then tighten the two screws that move the gib vertically upwards til a slight drag is felt when the carriage is moved up the bed. Tighten hex screws. FIG. 15 – ADJUSTING HEADSTOCK SPINDLE 6. Remove three fillister head screws and take off rear spindle bearing flange. 7. Open ear of lock washer and, with spanner wrench applied to lock nut as indicated above, tighten lock nut until slight drag is felt on the spindle when it is turned over by hand, with all gears in a neutral position, i.e., disengaged. 8.
After adjustment has been made, secure lock nut by bending over an ear on the lock washer, and replace all parts. BELT TENSION ADJUSTMENT The motor is mounted on a hinged plate on back of the headstock leg. The hinged plate is adjusted by means of screws in the leg to regulate the tension on the three V-belts which drive the lathe. The belts should have just enough tension to take the cuts without slipping. NOTE Do not put belts under too much tension, for in so doing, a strain is thrown on the motor and drive shaft bearings, causing excessive wear. Keep oil off belts. 15