Ingersoll-Rand GRS15A06S7 manual Probable Cause Solution, Never operate a Grinder without an Inlet

MAINTENANCE SECTION

4.Clean the threads on the Arbor; apply a film of thread locking compound to the threads. Screw the Bevel Gear Nut (48) onto the Arbor and tighten to 8.5 to 11.5 ft–lb (11.5 to 15.5 Nm) torque. Remove the Arbor from the vise.

5.Grasp the Angle Arbor Housing (43) in or leather–covered copper–covered vise jaws, angle head up. Install the Upper Bearing Spring Washer

(46)and Upper Arbor Bearing (47).

6.If replacement of the Mounting Plate Pin (45) is necessary, press a new pin into the Angle Arbor Housing.

7.Install the assembled Depressed Center Wheel Arbor

(55)into the Angle Arbor Housing.

8.Place the Sander Arbor Retaining Plate (52) in position on the Angle Arbor Housing.

9.Install the Screw Lock Washers (53) and Retaining Plate Screws. Tighten to 7.5 to 8 ft–lb (10 to 11 Nm) torque.

10.Install the Pad Mounting Kit Spacers (57) and Sanding Pad Assembly (56).

For GRP15A Models, install the Wool Bonnet (58).

11.Using the No. 49845–217 Sander Arbor Wrench to hold the arbor, install the Pad Mounting Kit Nut (57) and tighten securely.

12.Insert a 5” (127 mm) long 3/16” hex wrench into the elongated slot in the end of the Dead Handle (70) and into the hex recess in the screw head.

13.Position the Handle against the Angle Arbor Housing (43) and thread the screw into the Housing. The Handle can be attached at either of two positions 180 degrees apart. Select the desired position and tighten the screw to 18 ft–lb. (24.4 Nm) torque.

14.Apply approximately 5 cc of IRAX No. 68–1LB Grease into each Grease Fitting (44).

TROUBLESHOOTING GUIDE

Trouble	Probable Cause		Solution
Low power or low free speed	Insufficient air pressure at the	Check the air pressure at the inlet of the Tool.
	inlet	It must be 90 psig (6.2 bar/620 kPa).
	Plugged Screen	Clean the Inlet Bushing Screen in a clean, suitable,
		cleaning solution. If it cannot be cleaned,
		replace it.

	Never operate a Grinder without an Inlet
	Bushing Screen. Ingestion of dirt into the
	Grinder can, in some cases, cause an unsafe
	condition.
Worn or broken Vanes	Replace a complete set of new Vanes.
Worn or broken Cylinder	Replace the Cylinder if it appears cracked or if the
	bore is wavy or scored.
Improper lubrication or dirt	Lubricate the Grinder as instructed in
build–up in the motor	LUBRICATION. If lubrication does not result in
	satisfactory operation, disassemble the motor,
	clean and inspect all parts.

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