Product Safety Information
Failure to observe the following warnings, and to avoid these potentially hazardous situations, could result in death or serious
injury.
Read and understand this and all other supplied manuals before installing, operating, repairing, maintaining, changing accessories
on, or working near this product.
Always wear eye protection when operating or performing maintenance on this tool. The grade of protection required should be
assessed for each use and may include impact-resistant glasses with side shields, goggles, or a full face shield over those glasses.
Always turn o the air supply, bleed the air pressure and disconnect the air supply hose when not in use, before installing, removing
or adjusting any accessory on this tool, or before performing any maintenance on this tool or any accessory.
Note: When reading the instructions, refer to exploded diagrams in parts Information Manuals when applicable (see under Related Documentation
for form numbers).
Lubrication
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Each time the 93 and 95 Series Diggers are disassembled
for maintenance, repair or replacement of parts, lubricate
the tool as follows:
Inject approximately 3 cc of oil into the air inlet of
the Grip Handle Digger before attaching the air hose.
Disassembly
General Instructions
Do not disassemble the tool any further than necessary to replace
or repair damaged parts.
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 and help prevent distortion. This is particularly true of
threaded members and housings.
Do not remove any part which is a press t in or on a subassembly
unless the removal of that part is necessary for repairs or replace-
ment.
Do not disassemble the tool unless you have a complete set of
new gaskets and O-rings for replacement.
Disassembly of the Digger
Clamp the Barrel (33) of the Digger in leather-covered or copper-
covered vise jaws with the Handle (1, 31) upward.
Remove the Handle Bolt (25), Handle Bolt Lock Washer (26), and
the Handle Bolt Nut (27).
Carefully remove the Handle and the Valve Box (28).
After removing the Barrel from the vise, tip it to allow the
Piston (32) to slide out.
Regrasp the Barrel in the vise, accessory end upward.
Remove the Sleeve Locking Spring (36).
Loosen the Retaining Sleeve (37).
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2.
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4.
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7.
Remove the Retaining Sleeve and the Accessory (41) along with
the Buer Spacer (39), Buer Washer (40), and the Buer (38).
If required, drive the Nozzle (35) and/or the Barrel Bushing (34)
from the Barrel Assembly (33).
If required, remove the Spacer, Washer, and Buer from the
Sleeve.
Disassembly of the Handle Assembly
Clamp the Handle Assembly in leather-covered or copper-covered
vise jaws with the Valve Box (28) upward.
Carefully remove the Valve Box, Valve Box Dowel (30), Valve (31),
and the Valve Dowel (29).
Drive the Throttle Lever Pin (11) from the Handle and remove the
Throttle Lever (10).
Remove the Throttle Valve Cap (3) and the Throttle Valve
Spring (2).
From the throttle lever end, push the Throttle Valve (5), Throttle
Valve Bushing (12), and the Throttle Valve Plunger (13) from the
Handle.
If required, remove the Throttle Valve Face Cap Nut (6), the
Throttle Valve Face Cap (7), the Throttle Valve Face (8), and the
Throttle Valve Face Lock Washer (9) from the Throttle Valve.
Unscrew the Inlet Bushing (4).
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7.
Assembly
General Instructions
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 part with a thin lm of oil
before installation.
Apply a lm of O-ring lubricant to all O-rings before nal
assembly.
Assembly of the Handle Assembly
Clamp the Inside Trigger Handle Assembly (1) in leather-covered
or copper-covered vise jaws with the inlet valve bore upward.
Place the Throttle Valve Face Lock Washer (9) on the threaded end
of the Throttle Valve (5).
Follow the Lock Washer with the Throttle Valve Face (8) and Throt-
tle Valve Face Cap (7).
Secure the assembly with the Throttle Valve Face Cap Nut (6).
Place the Throttle Valve, long end rst, into the Handle.
Follow the Throttle Valve with the Throttle Valve Spring (2) and
secure with the Throttle Valve Cap (3).
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2.
3.
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2.
3.
4.
5.
6.
Install the Inlet Bushing (4).
Rotate the Handle in the vise to allow installation of the Throttle
Lever (10).
Install the Throttle Valve Plunger (13) into the throttle valve bore.
From the inside of the Handle, install the Throttle Lever.
Secure the Throttle Lever with the Throttle Lever Pin (11) making
sure that the Lever actuates the Throttle Valve.
Assembly of the Digger
If required, press the Barrel Bushing (34) and/or the Nozzle (35)
into the Barrel Assembly (33).
Place the Piston (32), long end rst, into the Barrel.
Clamp the Handle Assembly (1, 31) in leather-covered or copper-
covered vise jaws with the top downward.
Carefully place the Valve Box Dowel (30) into the dowel hole in
the handle.
Place the Valve (31) and the Valve Dowels (29) into the Valve
Box (28).
Place the assembled Valve Box onto the handle, aligning the Valve
Box Dowel with the dowel hole.
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