Ingersoll-Rand QS511 Operation And Maintenance Manual page 18

6. Remove the Vanes (27) from the Rotor.
7. Support the Front End Plate Assembly (28), as near
the rotor body as possible, on the table of an arbor
press and press the Rotor from the Front Rotor Bear-
ing (30). Remove the Bearing from the Front End
Plate.
Disassembly of the Housing
1. Pull the Housing Plug Cover (19) off the inlet end of
the Motor Housing (1).
2. If the Housing Plug (3) does not drop out of the
Housing when the Cover is removed, tap the inlet end
of the Housing on a block of wood to dislodge the
Plug from the Housing.
3. Insert a 5/16" wooden dowel between 6 and 8 inches
long, into the inlet end of the Motor Housing and
push the Reverse Valve Assembly (4) out the motor
end of the Housing.
4. Use a hooked tool to pull the Housing O- -ring (2) out
of the Motor Housing.
ASSEMBLY
General Instructions
1. Always press on the inner ring of a ball- -type bearing
when installing the bearing on a shaft.
Always press on the outer ring of a ball- -type bearing
2.
when pressing the bearing into a bearing recess.
3. Whenever grasping a tool or part in a vise, always use
leather- -covered or copper- -covered vise jaws to pro-
tect the surface of the part and help prevent distor-
tion. This is particularly true of threaded members
and housings.
4. Except for bearings, always clean every part and wipe
every part with a thin film of oil before installation.
5. Apply o- -ring lubricant to all o- -rings before final as-
sembly.
6. Check every bearing for roughness. If an open bear-
ing must be cleaned, wash it thoroughly in a clean,
suitable cleaning solution and dry with a clean cloth.
Sealed or shielded bearings should never be
cleaned. Work grease into every open bearing before
installation.
Assembly of the Housing
1. Lubricate the Housing O- -ring (2) with o- -ring lubri-
cant and install it at the bottom of the cylinder bore in
the Motor Housing (1).
MAINTENANCE SECTION
2.
3.
4.
5.
6.
Assembly of the Motor
1.
2.
3.
18
Inspect the face and o- -ring on the hub of the Reverse
Valve Assembly (4) for nicks or damage. Replace the
Reverse Valve Assembly if any damage is evident.
Lubricate the o- -ring on the hub of the Reverse Valve
Assembly with o- -ring lubricant and insert the Assem-
bly, o- -ring end leading, into the cylinder bore of the
Motor Housing. Push the Assembly toward the bot-
tom of the cylinder bore until it "snaps" into its prop-
er location.
While holding the Motor Housing with the inlet end
facing you and the reverse valve slot upward, rotate
the Reverse Valve Assembly until the threaded hole
in the valve body is positioned at the right hand edge
of the slot.
Insert the pin end of the Housing Plug (3) into the
hole in the Reverse Valve while fitting the remainder
of the Plug into the recess in the Motor Housing.
While holding the Plug in position, from the inlet end
of the Housing, slide the Housing Plug Cover (19)
onto the Housing. Make certain it captures the Plug
when it moves along the Housing and stops against
the housing shoulder.
Place the Front End Plate (28) on the splined shaft of
the Rotor (26) with the bearing recess away from the
rotor body.
Place the Front Rotor Bearing (30) onto the shaft and
using a sleeve or piece of tubing that contacts the
inner race of the Bearing, press the Bearing onto the
shaft until the Front End Plate nearly contacts the
rotor body.
In the following step, the measurement must be
made at the end corner of the large rotor body.
The clearance between the Front End Plate and Rotor
is critical. While pressing down with your finger on
the outer edge of the Front End Plate on the bearing
side, insert a 0.004" (0.1 mm) feeler gauge between
the face of the rotor body and the face of the End
Plate at a point that is 180 degrees from where the
pressure is applied. Refer to Dwg. TPA1740. To
increase the gap, support the End Plate and lightly tap
the rotor shaft with a plastic hammer; to decrease the
gap, press the Bearing farther onto the rotor shaft.