24
MAINTENANCE SECTION
Always wear eye protection when operating or
performing maintenance on this tool.
Always turn off the air supply and disconnect the air
supply hose before installing, removing or adjusting
any accessory on this tool, or before performing any
maintenance on this tool.
LUBRICATION
Whenever one of these Grinders is disassembled for
overhaul or replacement of parts, lubricate as follows:
1.
Always wipe the Vanes (16) with a light film of oil
before inserting them into the vane slots.
2.
Lubricate the Front Seal Cup Awwembly (19) with
Ingersoll–Rand No. 50 Oil.
3.
Inject 0.5 to 1.0 cc of Ingersoll–Rand No. 10 Oil into
the Air Inlet Assembly (1) after assembly.
DISASSEMBLY
General Instructions
1.
Do not disassemble the tool any further than
necessary to replace or repair damaged parts.
2.
When grasping a tool or part in a vise, always use
leather–covered or copper–covered vise jaws to
protect the surface of the part or tool and help prevent
distortion. This is particularly true of threaded
members and housings.
3.
Do not remove any part which is a press fit in or on a
subassembly unless the removal of that part is
necessary for repairs or replacement.
4.
Do not disassemble the tool unless you have a
complete set of new gaskets and O–rings for
replacement.
5.
Do not press any needle bearing from a part unless
you have a new needle bearing on hand for
installation. Needle bearings are always damaged
during the removal process.
Disassembly of all Collet Model Angle Heads
1.
Grasp the tool in copper–covered or leather–covered
vise jaws with the Collet (57) upward. Using the
Collet Body Wrench (65) on the flats of the collet
Arbor (35) and the Collet Nut Wrench (66) on the
Collet Nut (58), unscrew the Collet Nut and remove
the Collet.
2.
Using a spanner wrench, unscrew and remove the
Arbor Bearing Cap (36). This is a left–hand thread.
Rotate the spanner wrench clockwise to remove the
Cap.
In the following step, do not allow the Angle Head
to rotate when separating it from the Motor or
Extension Housing. Components may fall from the
Angle Head.
3.
Using the Clamp Nut Wrench (70), loosen the Clamp
Nut (29) and pull the Angle Housing Assembly (27)
away from the Motor Housing (8)). This is a
left–hand thread. Rotate the Nut Wrench clockwise
to loosen the Nut.
4.
Remove the Flange Clamp (23) from the Angle
Housing or Flange (22).
5.
Grasp the collet Arbor and pull the assembled Arbor
out of the Angle Head. The Wick is staked into
position and will be destroyed by removal. Make
certain a replacement Wick is available before
removing the old Wick.If the Wick (32) needs
replacement, pull it out of the Angle Housing.
6.
If the Upper Arbor Bearing (31) needs replacement,
support the Angle Head on the table of an arbor press,
arbor end downward, and press the Bearing out of the
Angle Head.
7.
Grasp the collet Arbor in copper–covered or
leather–covered vise jaws with the collet end
downward. Using an adjustable wrench, unscrew and
remove the Bevel Gear Nut (33) and lift the Bevel
Gear off the Arbor.
8.
If the Lower Arbor Bearing (34) must be replaced,
use a piece of tubing to support the Bearing on the
table of an arbor press and press the Arbor from the
Bearing.
When removing the Clamp Nut in the following
procedure, take all precautions necessary to
prevent the Spacer from being forcefully ejected in
a manner or direction that is hazardous.
9.
If the Clamp Nut must be removed from the Angle
Housing, insert the blades of two screwdrivers,
approximately 180 degrees apart, under the Clamp
Spacer (28) and pry the Spacer off the Housing.
Disassembly of all Wheel Model Angle Heads
1.
Grasp the tool in copper–covered or leather–covered
vise jaws with the Flange Nut (63) upward.
2.
For models ending in P945M, P945MC, P945ML,
P95M, P95MC or P95ML, use a 4 mm hex wrench
to unscrew the Wheel Retaining Screw (64A).
Summary of Contents for HA120RG4
Page 18: ...MAINTENANCE SECTION 18 Dwg TPA1297 6...
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