Service, Troubleshooting | Grizzly G0759 instruction

SECTION 7: SERVICE

Review the troubleshooting and procedures in this section if a problem develops with your machine. If you need replacement parts or additional help with a procedure, call our Technical Support at (570) 546-9663. Note: Please gather the serial number and manufacture date of your machine before calling.

Troubleshooting

Symptom	Possible Cause		Possible Solution
Machine does not	1.	Circuit breaker on machine tripped.	1.	Press reset button on motor junction box; reduce
start.				load on motor to prevent overheating.
	2.	Plug at fault or wired incorrectly.	2.	Ensure plug is not damaged and is wired correctly.
	3.	Motor wired incorrectly.	3.	Ensure motor wiring is correct.
	4.	Wall fuse/circuit breaker is blown/tripped.	4.	Ensure circuit size is correct and a short does not
				exist. Reset breaker or replace fuse.
	5.	Wiring is open/has high resistance.	5.	Check for broken wires or disconnected/corroded
				connections; repair/replace as necessary.
	6.	Machine power switch is at fault.	6.	Ensure switch is wired correctly; replace if at fault.
	7.	Motor is at fault.	7.	Test/repair/replace.

Machine stalls or is	1.	Feed rate/cutting speed too fast.	1.	Decrease feed rate/cutting speed.
overloaded.	2.	Wrong cutter type.	2.	Use the correct cutter for the task.
	3.	Machine is undersized for the task or tooling	3.	Use smaller or sharper tooling; reduce feed rate or
		is incorrect for the task.		spindle speed; use cutting fluid if possible.
	4.	Motor connection is wired incorrectly.	4.	Wire motor correctly for the intended voltage.
	5.	Motor bearings are at fault.	5.	Test by rotating shaft; rotational grinding/loose shaft
				requires bearing replacement.
	6.	Motor has overheated.	6.	Clean off motor, let cool, and reduce workload.
	7.	Motor is at fault.	7.	Test/repair/replace motor.

Machine has	1.	Motor or machine component is loose.	1.	Inspect/replace stripped or damaged bolts/nuts, and
vibration or noisy				re-tighten with thread locking fluid.
operation.	2.	Excessive depth of cut.	2.	Decrease depth of cut.
	3.	Cutter/tooling is loose.	3.	Make sure tooling is properly secured.
	4.	Cutter is dull or at fault.	4.	Replace/resharpen cutter.
	5.	Bit is chattering.	5.	Replace/sharpen bit; index bit to workpiece; use
				appropriate feed rate and cutting RPM.
	6.	machine is incorrectly mounted or sits	6.	Tighten/replace mounting bolts in bench; relocate/
		unevenly.		shim machine.
	7.	Motor bearings are at fault.	7.	Test by rotating shaft; rotational grinding/loose shaft
				requires bearing replacement.

Model G0704 (Mfg. Since 08/11)

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Grizzly G0759 owner manual Service, Troubleshooting

Contents

Model G0759 Machine Data Sheet Table Info Column & Stand Description Electrical Box Headstock Description Chip Guard Labels Model G0704 MILL/DRILL with Stand Page Table of Contents Introduction Manual Accuracy Contact InfoMachine Description Identification G0704 electronic controls identification Electronic Controls Identification Model G0704 DRILL/MILL with Stand 50 2250 RPM Accessories Included Safety Instructions for Machinery Safety ChILdREN & BYsTANdERs. Keepchildrenand Maintain Power CORds. When disconnect Additional Safety for Mill/Drills Power Supply 50 ft Minimum Gauge Size 16 AWG Needed for Setup UnpackingDescription Qty Contents Qty InventoryNot Shown Cleanup Before cleaning, gather the followingBasic steps for removing rust preventative Site Considerations Weight Load Moving & Placing Machine Example of a direct mount setup Bolting to Concrete Floors Mounting to Shop Floor To assemble your machine AssemblyTo install the drill chuck onto the arbor Drill Chuck Arbor Connecting Power Power Connection To test run and break-in the spindle bearings Test Run & Spindle Break-in Operation Overview Operations Speed Range Selector Knob Selects low range Basic Controls Digital readout unit controls Model G0704 Mfg. Since 08/11 To use the digital readout Digital Readout Unit To determine the needed spindle speed Calculating Spindle Speed To set the spindle speed Spindle Speed Direction Spindle Height Controls Changing Spindle Position Using Quill Feed Levers Drill Chuck To install the drill chuck and arbor To install the tooling Loading ToolingTo remove the collet Headstock Travel Axis and Rotation To raise or lower the headstockTo tilt the headstock to the left or right Table Travel Longitudinal FeedCross Feed H8179 H8177-Worktable with AngleG5684-R-8 Vertical Collet Rack G9322-Boring Head Combo Set G8683Z-Mini Shop Fox Mobile BaseH5685-4Rotary Table G5758-Tilt x Model G9512 T-Slot Nuts Maintenance ScheduleLubrication To lubricate the leadscrews Tools Needed Qty Handwheel gears Troubleshooting Service Symptom Possible Cause Possible Solution To adjust the table gibs To adjust the headstock gibsGibs To replace the digital readout unit battery Battery ReplacementTo adjust the Y-axis leadscrew nut To adjust the X-axis leadscrew To inspect and replace the motor brushes Motor Service Wiring Safety Instructions Wiring Wiring Diagram Side panel Rear panel Column Breakdown Parts Column Parts List 80-1 92V2 Electrical Box Breakdown & Parts List Headstock Breakdown Headstock Parts List Description Chip Guard Breakdown & Parts List Labels Breakdown & Parts List Model G0704 Mfg. Since 08/11 Comments Warranty Card BOX BELLINGHAM, WA Grizzly INDUSTRIAL, INC Warranty and Returns