Ingersoll-Rand GRS15A04S9 Trouble Probable Cause Solution, Disassembly and assembly instructions

MAINTENANCE SECTION

TROUBLESHOOTING GUIDE

Trouble	Probable Cause		Solution
Rough operation	Worn or broken Rear End Plate	Examine each bearing. Replace the Rear End Plate
	Assembly or Front Rotor Bearing	Assembly if worn or damaged or replace the Front
		Rotor Bearing.
		Rear End Plate Assembly is a matched set. See
		disassembly and assembly instructions.
	Worn or broken Bevel Gear or	Check for worn or broken teeth. If a replacement
	Pinion	is necessary, install both the Bevel Gear and
		Pinion. They are a matched set and must not be
		mismatched.
	Bent Arbor	Mount the Arbor on centers. Check bearing
		diameter runout with an indicator. Replace the
		Arbor if runout exceeds 0.002” (0.051 mm) Total
		Indicator Reading.
Scoring	Improper assembly	Make certain that all motor parts are properly
		aligned prior to installing the Handle Assembly
		into the Arbor Housing.
Air leaks	Worn Valve Seat or Valve Seat	Replace worn parts.
	Washer
	Worn Throttle Valve Seals	Replace both Seals.
	Oil Chamber Plug worn or not	Tighten the Plug. If the problem persists, replace
	tight	the Plug.
High free speed	Worn Rear End Plate Assembly	Replace the Rear End Plate Assembly if the large
	and/or Controller Seal	inside diameter of the Rear End Plate is worn to
		1.156” (38.506 mm) or larger.
Grinder will not run	Coupling Nut too tight	Loosen Coupling Nut and retighten to 47.5 to
		52.5 ft–lb (64.5 to 71.5 Nm) torque.
		Do not exceed 52.5 ft–lb (71.5 Nm) torque.

SAVE THESE INSTRUCTIONS. DO NOT DESTROY.

PN49999–459