Maintenance Section; General Instructions - Ingersoll Rand DB9 Serie Manual De Operación Y Mantenimeinto

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
Each time a DB9/DT9/6001 IRGOPIC is disassembled
for maintenance and repair or replacement of parts, pour
about 3 cc of Ingersoll–Rand No. 10 Oil in the air inlet
and operate the tool for 5 seconds to coat the internal parts
with oil.
After each two or three hours of operation and at the
beginning of each shift, flush the tool and lubricate
immediately afterwards as instructed in Placing the Tool
in Service.
DISASSEMBLY

General Instructions

1. Do not disassemble the tool any further than
necessary to replace or repair damaged parts
2. Whenever grasping 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
replacement.
Disassembly of the Retainer
For Screw–on Retainer
1. Remove the Chisel and unscrew the Retainer (29).
For Latch Retainer
1. Unscrew the Fronthead (30) from the Barrel (22). If
the Fronthead does not need to be disassembled for
service or repair, set it aside intact. If it does need to
be disassembled, refer to Disassembly of the
Fronthead.
For Hitch Cutter Retainer
1. Unscrew the Retainer (38) from the Barrel.
Disassembly of the Fronthead
Remove the Latch slowly and carefully as the
Plunger (33) could be ejected out of the Fronthead
by the force of the Spring (32).

MAINTENANCE SECTION

1.
2.
Disassembly of the Tool
1.
2.
3.
4.
5.
Disassembly of the Inside Trigger Assembly
1.
2.
24
Position the Latch until it is 3/4 of a turn from the
closed position. Use a suitable drift and tap the Latch
slowly and carefully until it is removed.
Remove the Plunger and Spring from the Fronthead.
Later models have a continuous groove around the
Latch.
Grip the threaded portion of the Barrel in
leather–covered or copper–covered vise jaws to avoid
damage to the Barrel.
Do not use excessive pressure on the Barrel.
Using a 6 mm hexagonal wrench, remove the Handle
Cap Screws (10) from the sockets in the Handle. Lift
off the Handle. Be careful not to lose the O–ring Seal
(15) which could be attached to the Handle or left on
the Adaptor Plate (14A).
To service or replace the Piston (21) or Valve
Assembly (19), no further disassembly is required.
Place the tool on its side on a flat workbench. Using
a suitable soft drift inserted through the nozzle end of
the tool, gently tap the Piston to the top of the Barrel
(Handle end). Continue in this manner until the Valve
Assembly is ejected from the Barrel. Remove the
Piston.
Use a 6 mm hexagonal wrench to remove the four
Isolator Cap Screws (14) and Lockwashers (11). The
Cover can now be removed.
Remove the O–ring (28) from its groove at the front
of the Barrel.
The Piston and Valve Assembly parts can now slide
out of the Barrel of the tool if it is tipped or
inclined.
The Cover can now be pushed or pulled from the
Barrel/Adaptor Plate Assembly.
Grip the body of the Handle in leather–covered or
copper–covered vise jaws and unscrew the Inlet
Bushing (9).
Remove the Handle from the vise and gently tap the
protruding steel portion of the Handle on the
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.