Grizzly G9249 owner manual Change Gears, To re-configure the change gears

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Change Gears

Change gears are configured to provide a wider range of feed rates and inch/metric threading.

Use Figure 55 and the descriptions below to become familiar with the components of the change gear system.

A

B

C

F

D

E

G

Figure 55. Change gear system.

A.Spindle Gear: Transfers power from the spindle to the change gear system.

B.Forward/Reverse Drive Gears: Selects clockwise or counterclockwise rotation of the feed rod or leadscrew.

C.Top Change Gear: Transfers power from the drive gears to the middle change gear.

D.Middle Change Gears: Transfers power from the top change gear to the bottom change gear. This is a 120T/127T combina- tion gear.

E.Bottom Change Gear: Transfers power from the middle change gears to the feed rate gearbox.

F.Feed Direction Lever: Selects which for- ward/reverse drive gear will transfer power from the spindle gear to the change gears.

G.Pivot Bracket: Provides positioning of the middle change gear so that it correctly mesh- es with the top and bottom change gears.

Tools Needed	Qty
Hex Wrench 5mm	1
Wrench 16mm	1
Wrench 18mm	1
To re-configure the change gears:

1.DISCONNECT LATHE FROM POWER!

2.Open the change gear door.

3.Use the feed direction lever to engage one of the drive gears with the spindle gear to keep the change gears from rotating during the next step.

4.Loosen the hex nut on the top change gear, the hex nut on the middle change gears, and the cap screw on the bottom change gear.

5.Support the middle change gears, loosen the hex nut securing the pivot bracket, then allow the middle change gears and bracket to swing down.

6.Remove the retaining fasteners of the top and bottom change gears, then remove these gears.

-38-	G9249 12" x 37" Belt Drive Gap Bed Lathe

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Contents Model G9249 Ss ,EAD from Leadbased PAINTS Table of Contents Foreword Functional Overview IntroductionContact Info Identification Machine Data Sheet Tailstock Info Other Specifications !,7!93 53% !.3 !002/6%$$ 3!&%49 ,!33%33 7%. /0%2!4 !,7!93 53%3 %!2.2 02/4%#4/ %. /0%2!4.! -!#.%29 53%3!!2/5.$%$ %84%.3/..#/2$ 2!4%$4&/2/4%-!#.%!-0%2!%2 53%3 2%#/--%.$%$- !##%33/2%3 -!.9 -!#.%3 #!. %*%#4 7/2+0%#%3 4/7!2$ /0%2!4/2 !,7!93 ,/#+ -/,% !3%3 & 53%$ % %&/2% /0%2!4. -!#.%29#Additional Safety Instructions For Metal Lathes Circuit Requirements 220V OperationSetup Setup SafetyItems Needed for Setup UnpackingInventory Box 1 Inventory Figure QtyClean Up Box 2 Inventory Figure Qty Left Cabinet StandLathe Assembly Placement Placement LocationSite Considerations Floor LoadLoosening the carriage lock bolt Mounting to Shop Floor Using Machine MountsBolting to Concrete Floors Check Gearbox Oil Test RunTo test run the machine Lubrication subsection onMERGENCYG3TOP Utton Factory adjustments that should be verified Recommended AdjustmentsSpindle Break-In Operation Safety OperationsBasic Controls Headstock ControlsCarriage Controls Tailstock ControlsTools Needed Qty Chuck & Faceplate Mounting/RemovalTo remove a chuck or faceplate Mounting a Workpiece Mounting a Chuck or FaceplateTo remove and install the jaws Using the 3-Jaw ChuckTo mount a workpiece in the 3-jaw chuck Using the 4-Jaw Chuck To mount a workpiece on the 4-jaw chuckUsing the Faceplate Installing a Sleeve and Center into the SpindleCenters To mount a workpiece on the faceplateTailstock Installing a Tapered Tool into the QuillRemoving a Sleeve and Center from the Spindle Offsetting Tailstock To set up the tailstock to cut a shallow taperAligning Tailstock To align the tailstock with the headstockStep Drilling with Tailstock To set up the tailstock for drillingTo remove a tapered drill arbor or drill bit To install and use the steady rest Steady RestCross Slide Follow RestHandwheel Dial Increments Compound Slide Tool PostsTo set the compound slide angle To load and use the 4-way tool postSpindle Speed Configuring the V-Belts and Back GearCalculating the Correct Spindle RPM To engage the back gears To disengage the back gearsPower Feed Recommended Feed Rates Setting Feed RateTo set the feed rate To re-configure the change gears Change GearsSide Front View Change gear. G9249 12 x 37 Belt Drive Gap Bed LatheThreading Operation To cut threadsEdhidc Accessories H3022-Measurement Tool SetPc. Carbide Tipped Tool Bit Sets H2670-HSS Square Tool BitsH2996-Double Ended Boring Bar H5936-2 Pc. Knurling Tool SetH6879-Lathe Operation & Maintenance Book G1070-MT3 Live Center SetCleaning Protecting MaintenanceSchedule Lubrication Spindle Bearing OilLubricant Frequency Qty To add oil to the spindle bearing reservoirsHeadstock Change Gears Headstock Idler Pulley ShaftHeadstock Gears Headstock Spindle Pulley ShaftApron Gearbox Feed Rate GearsTo lubricate the feed rate gears Ball Oilers Back Gear ShaftAdjusting Motor V-Belt To adjust the motor V-belt tensionTensioning Replacing V-Belts Replacing Motor V-BeltPower Twist V-Belt G9249 12 x 37 Belt Drive Gap Bed Lathe Spindle V-BeltTroubleshooting ServiceMotor & Electrical Faceplate Operations To adjust the saddle gib Adjusting GibsTo adjust the cross slide and compound slide gibs To adjust the tailstock lock To adjust the cross slide backlashTailstock Lock Cross Slide BacklashGap Removal Spindle Bearing PreloadDisconnect Lathe from Power To confirm that the bearings are correctly pre- loaded To remove/install the rest fingers To remove/install the brass tipsRest Finger Tips Type of Finger Tip Part NumberAdjusting Half-Nut To adjust the half-nut guide barWiring Electrical Safety InstructionsWiring Overview Diagram onControl Panel MotorElectrical Cabinet Wiring Diagram Control Panel & Motor Wiring Diagrams BoxParts BedHeadstock Headstock Parts List Figured Flat NUT M8-1.25Bushing Feed Rate Gearbox Feed Rate Gearbox Parts List Apron Apron Parts List + + Carriage Parts List #* #+ Spindle Lever Change Gear Cover Complete Steady Rest Complete Follow Rest Electrical Cabinet Electrical Cabinet Parts List Cabinet Stand Accessories Label Placement 22!.49 #!2$ 99.$5342!, .# 0//88 %,,.!- 7! Warranty and Returns #ALL 4ODAYD&ORO! &2%%