Ingersoll Rand DB9 Serie Manual De Operación Y Mantenimeinto página 25

Disassembly of the Outside Trigger Assembly
1. Grip the body of the Handle (36) in leather–covered
or copper–covered vise jaws and unscrew the Inlet
Bushing (9).
2. Remove the Handle from the vise and gently tap the
protruding steel portion of the Handle on a
workbench. This will allow the Throttle Valve
Plunger (4), Throttle Valve (6) with Throttle Valve
O–ring (5) and Throttle Valve Spring (7) to slide from
the bore of the Handle.
Do not attempt to remove the threaded steel
portion of the Handle. This part is molded in and
is not a serviceable item.
3. Using a suitable long pin punch, drive the Trigger Pin
(37) clear of the Trigger (34). Remove the Trigger
from the rear of the Handle.
4. Using a long pin punch, drive the Intermediate Lever
Pin (37) clear of the Intermediate Lever (35).
Remove the Intermediate Lever from the front face of
the Handle.
Removal of the Cover
The Cover (39) is not a serviceable item. If this
part is damaged, replace it with a new one.
1. To replace the Cover, follow the relevant instructions
for removal of the Fronthead (30) or Retainer–type
fitted to the tool. Remove the O–ring from the groove
in the Barrel.
2. Grip the threads of the Barrel in copper–covered or
leather–covered vise jaws to prevent damage to the
threads.
Do not use excessive force to hold the barrel.
3. Using a 6 mm hexagonal wrench, remove the four
Handle Cap Screws. Lift the Handle off the Adaptor
Plate.
The Piston and Valve Assembly parts can now slide
out of the Barrel of the tool if it is tipped or
inclined.
4. Remove the four Isolator Cap Screws and Lock
Washers from the Adaptor Plate.
5. The Cover can now be pushed or pulled from the
Barrel/Adaptor Plate Assembly.
MAINTENANCE SECTION
Disassembly of the Barrel
1.
2.
General Instructions
1.
2.
3.
4.
Assembly of the Barrel
1.
2.
3.
4.
25
The press fit between the Barrel (22) and the
Nozzle (36) and Cushion Bushing (25) is heavy
interference and a suitably guarded press should
be used.
Remove the Nozzle with a pressing bar which just
passes through the Cushion Bushing and press out
from the Valve end of the Barrel.
Press the Cushion Bushing down the barrel toward the
Valve bore end approximately 1/4" (6 mm). Using a
pointed drift and long nose pliers, extract the Cushion
Bushing Retaining Clip (24). Press the Cushion
Bushing out of the Barrel through the Nozzle End.
ASSEMBLY
Whenever grasping a tool or part in a vise, always use
leather–covered or copper–covered vise jaws. Take
extra care with threaded parts and housings.
Always clean every part and wipe every steel part
with a thin film of oil before installation.
Apply a film of O–ring lubricant to all O–rings before
final assembly.
Make sure that no grit, swarf or dirt enters the
sub–assemblies.
The press fit between the Barrel (22) and the
Nozzle and Cushion Bushing (23) is heavy
interference and a suitably guarded press should
be used.
Press the Cushion Bushing (23) into the nozzle end of
the Barrel.
For correct assembly, the large radius bore end of
the Cushion Bushing should be oriented to face the
handle end of the Barrel.
Press in the Cushion Bushing until the groove in
which the Cushion Bushing Retaining Clip (24) fits
can be seen from the nozzle end of the Barrel.
Press the Cushion Bushing into the Nozzle end of the
Barrel (end with the large radius bore) until the
Cushion Bushing has passed the groove where the
Cushion Bushing Retaining Clip (35) fits.
Insert the Cushion Bushing Retaining Clip into the
Nozzle end of the Barrel and seat the Clip into the
groove in the Barrel.