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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 Series 172 or 182 Scaler 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.
DISASSEMBLY
General Instructions
1. Do not disassemble the tool any further than
necessary to replace or repair damaged parts.
2. 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.
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.
Removal of Grip Handle or Head Block,
Valve and Piston
1. Insert a Chisel in the tool. Clamp the shank of the
Chisel in a vise with the tool in a vertical position.
2. For Pistol Grip Handle (25), unscrew the Adapter
Bolt Nut (38) and pull the Pistol Grip Handle from the
Adapter (35).
3. For all tools, loosen the Casing Locknut (45).
4. Grasp the flats on the Head Block (1) or (15) or Grip
Handle Adapter (35) with a large wrench and unscrew
that member from the Casing (52).
5. Withdraw the Valve Cap (46), Valve Spacer (49),
Valve (48) and Piston (51).
Disassembly of Throttle Mechanism
For Pistol Grip Throttle
1. Secure the Grip Handle in a vise with leather–covered
or copper–covered jaws, drive out Throttle Lever
Pin (27) and remove Throttle Lever (26).
MAINTENANCE SECTION
2. Unscrew Throttle Valve Cap (32) and remove Throttle
3. Remove Throttle Valve Face (30) from Throttle
1. Secure the Head Block (1) in a vise with
2. Unscrew the Throttle Valve Cap (2), remove the
3. Remove the Throttle Valve Face (6) from the Throttle
1. Secure the Push Throttle Body (18) in a vise with
2. Remove the the Throttle Body Retainer (21) and pull
3. Pull the Push Throttle Valve (19) from the Push
Disassembly of the Retaining Mechanism
1. Remove the accessory from the nozzle of the tool.
2. Remove the Retainer Sleeve Lock Ring (57).
3. While holding the Scaler with the nozzle facing away
4. Fully depress the Lock Plunger and rotate the
General Instructions
1. Whenever grasping a tool or part in a vise, always use
2. Always clean every part and wipe every part with a
3. Apply a film of O–ring lubricant to all O–rings before
18
Valve Spring (33), Throttle Valve (29) and Throttle
Valve Plunger (28).
Valve.
For Lever Throttle
leather–covered or copper–covered jaws, drive out the
Throttle Lever Pin (11) and remove Throttle
Lever (10).
Throttle Valve Spring (3) and Throttle Valve (5).
Valve.
For Push Throttle
leather–covered or copper–covered jaws and remove
the Inlet Bushing (17).
the Push Throttle Body with throttle components from
the Head Block.
Throttle Body. Remove the Throttle Valve Pin (22)
and the Throttle Valve Face (20) if they need to be
replaced.
from you, rotate the Retainer Sleeve (54) to the left
until the Lock Plunger (55) snaps outward.
Retainer Sleeve further to the left as far as it will go
and then withdraw the Retainer Sleeve from the end
of the Casing (52).
When you withdraw the Retainer Sleeve, the
Retainer Ball (53), Retainer Sleeve Lock
Plunger (55) and Plunger Lock Spring (56) are free
to fall from their respective recesses in the Casing.
Do not lose these parts.
ASSEMBLY
leather–covered or copper–covered vise jaws. Take
extra care with threaded parts and housings.
thin film of oil before installation.
final assembly.
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