Maintenance Section; General Instructions - Ingersoll Rand 7802S Manual De Operación Y Mantenimiento

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.
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 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 the Shear Head and Gearing
1. Using a hex wrench, loosen the three Cap Screws (46)
and pull the Shear Attachment (40) off the Gear Case
Housing (39).
2. Using a wrench on the flats of the Gear Case, loosen
and carefully separate the Gear Case and assembled
Spindle (31) from the Motor Housing (1).
3. Carefully grasp the Spindle and unscrew the Eccentric
Driver (42) from the other end. Remove the Washer
(41) and pull the Spindle out the motor end of the
Gear Case.
4. Pull the Grease Shield (35), Front Spindle Bearing Kit
(36) and Spacer (37) out of the Gear Case.
5. Pull the Rear Spindle Bearing (29) of the rear hub of
the Spindle.
6. Using snap ring pliers, remove the Grease Shield
Retainer (34) from the hub of the Spindle and pull the
two Spindle Planet Gears (32) out of the Spindle.
Disassembly of the Motor
1. Pull the Ring Gear (38) out of the Motor Housing (1).
2. Holding the Motor Housing vertically with the motor
opening down, strike it lightly against the wooden

MAINTENANCE SECTION

3. Pull the Front End Plate Assembly (26) and Front
4. Remove the Front Rotor Bearing from the Front End
5. Lift off the Cylinder (23).
6. Remove the Vanes (16). Clean and inspect each Vane
7. If the Rear Rotor Bearing (20) must be replaced,
Disassembly of the Throttle Mechanism
1. Using a screwdriver, remove the two Trigger Shield
2. Remove the Throttle Valve Spring (6) from the
3. Holding the Throttle Valve Assembly (7), unscrew the
4. Using a hex wrench, loosen the Regulator Setscrew
5. Pull the Throttle Valve out of the Throttle Valve
General Instructions
1. Always press on the inner ring of a ball- - type bearing
2. Always press on the outer ring of a ball- - type bearing
3. Whenever grasping a tool or part in a vise, always use
4. Always clean every part and wipe every part with a
5. Check every bearing for roughness. If an open bearing
6. Apply a film of O- - ring lubricant to every O- - ring
14
surface of a workbench to jar the motor free. Grasp
the splined end of the Rotor (24) and pull the entire
motor from the Housing.
Rotor Bearing (28) off the Rotor.
Plate.
for cracked, chipped or burned edges. If any Vane
needs replacement, replace the entire set.
remove the Rear Rotor Bearing Retainer (12) and pull
the Bearing and the Rear End Plate Assembly (21) off
the Rotor.
Screws (17) and pull the assembled trigger
mechanism out of the Motor Housing (1). Slide the
Trigger Shield (16) off the trigger mechanism.
Housing.
Trigger (14) from the Valve.
(13) and unscrew the Speed Regulator (12) from the
Throttle Valve.
Bushing (9).
ASSEMBLY
when installing the bearing on a shaft.
when pressing the bearing into a bearing recess.
leather- - covered or copper- - covered vise jaws. Take
extra care not to damage threads or distort housings.
thin film of oil before installation.
must be cleaned, wash it thoroughly in a clean,
suitable, cleaning solution and dry with a clean cloth.
Sealed or shielded bearings should not be cleaned.
Work grease into every open bearing before
installation.
before installation.