Roller Circle

7. 7. Use Use a a torch torch to to break break the the welds welds on on the the bushing bushing retainers retainers and and remove remove the the retainers. retainers.

h h CAUTION: CAUTION: When When using using the the torch torch be be .. .. sure sure to to follow follow all all safety safety measures measures to to help help prevent prevent an an accident accident or or injury. injury.

H. H. Remove Remove the the bushing bushing holddown holddown capscrews. capscrews.

Insert Insert eight eight l"-UNC l"-UNC X X 1;)" 1;)" bolts bolts in in the the tapped tapped holes holes in in the the bushing. bushing. Tighten Tighten the the bolts bolts equally equally to to force force bushing bushing from from the the center center pintle pintle bearing. bearing.

NOTE: NOTE: It It may may be be necessary necessary to to crib crib or or jack jack under under the the revolving revolving frame frame to to align align the the frame frame with with the the center center pintle pintle and and remove remove any any side side pressure pressure on on the the bushing. bushing.

9. 9. Clean Clean the the bearing bearing bore bore and and the the center center pintle pintle of ofany any dirt dirt or or burrs. burrs. Screw Screw four four rod rod bolts bolts ;j ;j /4" /4"

X X 17" 17" lINC lINC equally equally spaced. spaced. into into the the tapped tapped hole,.; hole,.; in in the the center center pintle pintle bearing. bearing. Set Set the the bushing bushing halves halves on on the the rod rod bolts bolts and and install install full full nuts nuts on on the the rod rod bolts. bolts. Tighten Tighten the the nuts nuts equally equally to to press press the the bushing bushing into into the the center center pintle pintle bearing. bearing.

NOTE: NOTE: Be Be sure sure the the bore bore and and outside outside diamediame-

ter ter of ofthe the bushing bushing halves halves are are well well lubricated. lubricated.

The The bushing bushing has has a a clearance clearance of of .032 .032 to to .039 .039 inch inch to to the the center center pintle pintle and and a a clearance clearance of of .000 .000 to to .004 .004 to to the the center center pintle pintle bearing. bearing.

10. 10. When When the the bushing bushing is is within within two two inches inches of of being being seated, seated, remove remove the the rod rod bolts bolts and and insert insert the the pight pight bushing bushing holddown holddown bolts. bolts. l.Jse l.Jse the the hold holddown down bolts bolts to to finish finish seating seating the the bushing. bushing. Install Install the the bushing bushing retainer retainer and and tack tack weld. weld.

11. 11. Rein Reinstall stall the the rest rest of of the the rna rnaterial terial in in reverse reverse of of disassembly. disassembly.

h h CAUTION: CAUTION: Have Have an an electrician electrician verify verify .. .. that that all all electrical electrical connections connections are are made made and and that that all all electrical electrical lines lines are are megmeggered gered for for shorts shorts before before power power is is restored restored to to the the machine. machine.

12. 12. For For parlier parlier machines machines with with a a sleeve sleeve mounted mounted cen centel' tel' pin pintIe tIe bush bushi ing ng proceed proceed as as follows follows for for bushing bushing replacement: replacement: a. a. Follow Follow steps steps 1 1 through through 6 6 as as listed listed for for latest latest style style center center pintle pintle bushing. bushing. b. b. 1{emove 1{emove the the sleeve sleeve holddown holddown bolts. bolts. c. c. Attach Attach a a grease grease gun gun and and fittings, fittings, capable capable of of 10,000 10,000 PSI PSI with with N2 N2 grease, grease, to to the the hydraulic hydraulic pressure pressure hole hole in in the the center center pinpintle tle bearing. bearing. d. d. Apply Apply maximum maximum pressure pressure with with the the grease grease gun gun to to break break the the sleeve sleeve loose loose from from the the cen cen tel' tel' pin pin tIe tIe bea bea I' I' in in g. g. l{ l{ em em 0 0 ve v e the the sleeve sleeve assembly assembly from from the the center center pinpintle. tle.

c. c. I{emove I{emove the the bushing bushing retainer retainer and and bushing bushing from from the the sleeve. sleeve.

f. f. Clean Clean and and inspect inspect all all parts. parts. 1{ppair 1{ppair or or replace replace all all worn worn or or damaged damaged parts parts and and reassemble reassemble in in reverse reverse of of disassembly. disassemhly.

SWING SWING RACK RACK

Inspect Inspect the the swing swing rack rack and and pinion pinion weekly weekly to to insure insure there there are are no no bare bare n1l'tal n1l'tal spots spots or or contact contact points, points, brokpn brokpn tooth tooth ends, ends, loose loose bolts bolts or or broken broken welds welds at at back back of of rack. rack. In In particular, particular, check check for for pitpitting. ting. abrasion, abrasion, scratching, scratching, spalling, spalling, and and galling galling as as shown shown in in appendix appendix under under the the topic, topic, GEAH GEAH INSPECTION. INSPECTION. All All teeth teeth should should carry carry a a good good coatcoating ing of of protective protective lubricant. lubricant.

If If during during inspection inspection a a broken broken tooth tooth is is noted, noted, shut shut down down the the machine machine immediately immediately and and do do not not operate operate the the machine machine until until the the tooth tooth has has been been repaired. repaired. For For repair repair instructions instructions for for broken broken or or cracked cracked teeth, teeth, refer refer to to appendix. appendix.

WARNING: WARNING: Continued Continued operation operation of of the the mamachine chine with with one one or or more more broken broken teeth teeth in in the the swing swing rack rack could could result result in in additional additional damdamage age to to the the swing swing rack, rack, swing swing pinions pinions and and swing swing machinery machinery units. units.

REPAIR REPAIR

Although Although uncommon, uncommon, if if complete complete cracking cracking of of a a swing swing rack rack segment segment is is noted, noted, the the rack rack segment segment can can be be replaced replaced using using the the following following proced procedure. ure. Prior Prior to to initiating initiating the the repair, repair, contact contact the the Bucyrus-Erie Bucyrus-Erie Service Service Departmen Department t so so that that the the cause cause of ofthe the crackcracking ing can can be be traced. traced.

1. 1. Move Move the the machine machine to to a a safe safe area area with with adequate adequate space space to to perform perform the the repair. repair.

2. 2. Swing Swing the the machine machine so so the the damaged damaged rack rack segsegment ment lies lies behind behind a a roller roller circle circle section section not not havhaving ing an an upper upper rail. rail. Shut Shut down down the the machine machine and and tag tag the the controls. controls.

;L ;L Hemove Hemove the the roller roller circle circle section section completely completely as as described described under under topic topic I{OLLER I{OLLER CIRCLE. CIRCLE. InInstall stall ramps ramps sloping sloping down down from from the the rail rail pad pad toward toward the the damaged damaged rack rack section section (figure (figure ;n. ;n.