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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 a Series 99H Grinder is disassembled for
overhaul or replacement of parts, lubricate as follows:
Inject about 1.5 cc of Ingersoll–Rand No. 50 Oil into the
Inlet Bushing (4) after assembly. Fill the oil chamber.
After each eight hours of operation, replenish the oil
supply. The use of an air line lubricator is recommended
with these grinders. Where the lubricator cannot be
permanently mounted, we recommend using
Ingersoll–Rand No. 8LUB12 Lubricator. For permanent
installations, we recommend using Ingersoll–Rand No.
C31–06–G00 Filter–Lubricator–Regulator Unit. These
units have 3/4" pipe tap, 1/2 pt. (237 mL) capacity.
Larger capacity units may be used, but do not use a unit
having less than a 3/4" pipe tap inlet and outlet.
OILER ADJUSTMENT
The built–in lubricator has been properly adjusted at the
factory. A lack of oil indicates the Oiler needs filling or
the Oiler Felts (21) are clogged and must be replaced as
follows:
For Grip Handle Models
1. Remove the Arbor Housing Screws (30), Lock
Washers (31) and Arbor Housing Gasket (32).
2. Remove the Oil Chamber Plug (24) and pour the oil
from the oil chamber.
3. Using snap ring pliers remove the Oiler Retainer (18).
4. Insert a 1/4 x 20 (M6 x 1.0) machine screw in the
pilot hole of the Oiler Body Assembly (19). (Refer to
Dwg. TPD638.)
MAINTENANCE SECTION
(Dwg. TPD638)
17
5.
Grasping the screw head with pliers, pull out the Oiler
Body Assembly.
6.
With a thin–blade screwdriver, unscrew the Oiler
Adjusting Screw (20).
7.
Using tweezers or a piece of bent wire, remove the
Oiler Felts (21) and install a new set.
8.
Replace the Oiler Adjusting Screw, installing it
slightly below flush.
9.
Replenish the oil supply.
For Lever Handle Models
1.
Remove the Arbor Housing Screws (30), Lock
Washers (31) and Arbor Housing Gasket (32).
2.
Remove the Oil Chamber Plug (24) and pour the oil
from the oil chamber.
3.
Using snap ring pliers, remove the Oiler Retainer
(18).
4.
Insert lock ring pliers in the hole of the Oiler Body
Assembly (19) and pull out the Oiler Body Assembly.
5.
With a thin–blade screwdriver, unscrew the Oiler
Adjusting Screw (20).
6.
Using tweezers or a piece of bent wire, remove the
Oiler Felts and install a new set.
7.
Replace the Oiler Adjusting Screw, installing it
slightly below flush.
8.
Replenish the oil supply.
DISASSEMBLY
General Instructions
1.
Do not disassemble the tool any further than
necessary to replace or repair damaged parts.
2.
Whenever grasping a tool or part in a vise, always use
leather–covered or copper–covered vise jaws to
protect the surface of the part 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
replacements.
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