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 long pin punch, drive the Trigger Pin (3) clear
of the Trigger (2). Remove the Trigger from the front
face of the Handle.
Disassembly of the Outside Trigger Assembly
1. Grip the body of the Handle (65) 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
(66) clear of the Trigger (63). Remove the Trigger
from the rear of the Handle.
4. Using a long pin punch, drive the Intermediate Lever
Pin (66) clear of the Intermediate Lever (64).
Remove the Intermediate Lever from the front face of
the Handle.
Disassembly of the T Handle
1. Grip the body of the Handle (53) in leather–covered
or copper–covered vise jaws and unscrew the Air
Connection Cap (61). Extract the Air Connection (59)
from the taper in the Air Connection Cap.
2. Remove the Handle from the vise and gently tap the
air inlet on a workbench. This will allow the Throttle
Valve Plunger (57), Throttle Valve (6) with Throttle
Valve O–ring (5) and Throttle Valve Spring (58) to
slide from the bore of the Handle.
3. Using a suitable pin punch, drive the Pins (56) out of
the Handle and extract the Throttle Valve Lever (54).
Disassembly of the Cover
1. The Outer Lower Bushing (40) is retained by the
Front End Cap (41) which is a snap fit onto the Cover.
To remove the Front End Cap, use a suitable soft drift
and drive the Outer Lower Bushing from inside the
Cover (39) until the Front End Cap breaks free of the
snap fit.
MAINTENANCE SECTION
Disassembly of the Barrel
1.
2.
3.
4.
Disassembly of the Isolator
1.
2.
General Instructions
1.
2.
3.
25
Unscrew the Elbow (26) of the Air Feed Assembly
(23) from the barrel thread. Remove the complete
Assembly.
The parts are supplied only as an assembly.
The press fit between the Barrel (33) and the
Nozzle (36) and Cushion Bushing (34) 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.
Removal of the 1" Hex Nozzle (DT10–S6–2) may
require that the Cushion Bush (34) be removed
first to allow a larger pressing bar access to the
Nozzle. The Cushion Bush Retaining Clip (35)
usually does not need to be removed.
Should the Bushing Retaining Clip (35) require
replacement, 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 Clip. Always install a new clip on
reassembly.
If the Lower Inner Sleeve (37) must be removed,
have another on hand as it is likely to be damaged
during removal.
To remove the Lower Inner Sleeve, remove the
Retaining Clip (38) and drive off the Barrel using a
suitable drift.
Remove the Nose Cap Screw (19) and the Male
Nosecap (18).
Grip the Isolator (15) in leather–covered or
copper–covered vise jaws. The Female Isolator (17)
can now be pulled away.
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.