Ingersoll Rand 1 Serie Manual De Funcionamiento Y Mantenimiento página 22

4. Place assembled Valve components on large or
threaded end of Barrel with Valve Seat down.
5. Install Handle (1) and tighten to 180 ft–lb (244 Nm)
torque.
Assembly of the Handle, Throttle Mechanism and
Nozzle
1. Install the Air Strainer Body (11) in the Handle.
2. Slide the new Throttle Valve Plunger Bushing (7) over
a plunger bushing arbor and insert it into the Handle
through the threaded opening at the base of the grip.
3. Press the Bushing until its trailing face is 1–21/32"
(42.06 mm) below the face of the throttle valve cap
oss on the Handle.
4. Using a plunger bushing reamer guide and a throttle
valve plunger bushing reamer, ream the Throttle
Valve Plunger Bushing to size.
5. Install Throttle Valve Plunger (6), Throttle Valve
Ball (5), Throttle Valve Spring (8) and Throttle Valve
Cap (9).
6. Align Throttle Lever (2) in Handle and drive in
Throttle Lever Pin (3).
7. Reposition the tool in a vise with leather–covered or
copper–covered jaws by clamping the Handle across
the Throttle Lever Pin with the Barrel up.
8. Slide Locking Ring (20) over splines on Barrel,
aligning castellations on Locking Ring with
castellations in Handle. Tap Locking Ring lightly in
several places to secure in position.
9. Spread apart and install the Exhaust Deflector (21).
10. Install new Nozzle (24) after Tool has been
assembled. Using a soft hammer, start new Nozzle,
externally beveled end first, squarely into Barrel bore.
Installation of a Hexagon Nozzle requires a 50 ton
press.
For Hexagon Nozzles, position a flat of the Nozzle at
the top so that the chisel blade will be installed in the
correct operating position. Support the Handle
directly beneath the Barrel and using a 50 ton press,
press in the new Nozzle until it seats.
11. Install Retainer (33) on front of Barrel and secure
with Lock Spring (33A) or Flat Spring and Pin (33B).
MAINTENANCE SECTION
Installation of Oversize Piston
Do not install an oversize Piston without first lapping
the Barrel.
Greater wear occurs near the center of the barrel bore than
at either end. To obtain full benefit from an oversize
Piston (22), it is necessary to lap the Barrel (23) until the
bore is of uniform size for its entire length.
Select and install the proper size Piston after truing up the
Barrel bore. Pistons are furnished .004", .008"or .012"
oversize.
Installation of Oversize Nozzle
Steel hexagon or round nozzles are furnished with outside
diameters of .0005" oversize.
The Nozzle must be a tight press fit in the front of the
Barrel (23). After the Nozzle has been replaced a few
times, the Barrel may become enlarged to the extent that
the Nozzle is no longer tight. If this condition is noted, an
oversize Nozzle should be used. The oversize Nozzle is
plainly etched with the amount of oversize; a standard
Nozzle is unmarked. Examine a Nozzle that can be
pressed easily from the Barrel. If it is unmarked, use the
.0005" oversize when reassembling the Chipper.
See MAINTENANCE TOOLS for Nozzle removal tool.
Installation of Oversize Inlet Bushing
This part is available .012" oversize. It should be used
only in cases where the threads in the Handle have
become worn to the extent that air leakage is noted. A
special tap must be used to oversize the threads in the
Handle before the oversize Bushing can be installed.
Replacement of Throttle Valve Guide (8) in Handle. (For
Series 1, 2, 3, 4 and Series W1, W2, W3 and W4 Chipping
Hammers with first two letters of serial number SA
through SP).
1. Tap the worn Throttle Valve Guide (8) to a 9/16"–12
2. Thread a 9/16"–12 thread Cap Screw into the Guide,
3. Using the No. HH–607 Throttle Valve Guide Inserting
22
thread.
grasp the head of the Cap Screw in a vise and pull the
Guide from the Handle (1).
Tool, press the new Throttle Valve Guide into the
Handle until the shoulder on the Inserting Tool
contacts the face of the throttle valve cap boss on the
Handle. If a piloted arbor is used instead of the
Inserting Tool, press the Throttle Valve Guide into the
Handle until its trailing face is 37/64" (14.68 mm)
below the face of the throttle valve cap boss.