Ingersoll Rand K2LA1 Manuel D'exploitation Et D'entretien page 16

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 K2LA1, K2LA1SA, K2LA2 or
K2LA2SA 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.
Weekly, flush the tool and lubricate immediately
afterwards as instructed in Placing the Tool in Service.
Loss of power and excessive air consumption may be due
to wear on the Piston (15) and the bore of the Barrel (13).
This can be determined by checking the Piston diameter at
each end and in the center with a micrometer. If the
diameter at the center is .003" greater than the diameter at
either end, it is proof that the Piston and Barrel are worn.
To correct, lap the Barrel and install an oversize Piston as
instructed on Page 8 under Installation of Oversize
Piston.
If examination of the Handle (1) indicates that it is not
seating squarely on the Valve Box (10), reface the handle
seat. Coat the barrel threads with graphite grease or other
rust resisting compound before screwing on the Handle.
DISASSEMBLY
General Instructions
1. Do not disassemble the tool any further than
necessary to replace or repair damaged parts.
2. When 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.
Disassembly of Handle and Throttle Mechanism
1. Remove the Lock Spring (33A) or Flat Spring and
Pin (33B) and Retainer (33).
MAINTENANCE SECTION
2. Using a vise with leather–covered or copper–covered
3. Using a pin punch, drive the Throttle Lever Pin (3)
4. Unscrew the Throttle Valve Cap (7) and remove the
5. Unscrew and remove the Strainer Body (6).
Disassembly of the Barrel, Piston and Nozzle
1. Using the No. 34SR–54 Exhaust Deflector Pliers,
2. Using a screwdriver and hammer, tap Lock Ring (16)
3. Unscrew the Handle using a wrench at least 30"
4. Remove Valve Assembly from top of Barrel and
5. Remove Barrel from vise, remove Deflector and Ring
6. To remove Nozzle (14), use the No. K2L–119 Nozzle
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
Assembly of the Barrel, Piston and Nozzle
1. Secure the Barrel (13) in a vise with leather–covered
2. Install Piston (15), small end first, in Barrel.
3. Assemble Valve components in the following
4. Place assembled Valve components on large or
5. Install Handle (1) and tighten to 180 ft–lb (244 Nm)
16
jaws, clamp the Scaler by the barrel with the Handle
(1) up.
from the Handle. Remove the Throttle Lever (2).
Throttle Valve Spring (8), Throttle Valve (4) and
Throttle Valve Plunger (9).
spread apart the Exhaust Deflector (17) and let it slide
down the Barrel.
until it disengages from the castellations on the
Handle and slides free of the splines on the Barrel.
(760 mm) long.
disassemble by removing Dowel Pins.
from Barrel and while holding it over a bench, tip
large end down to allow Piston (15) to slide out.
Ejection Arbor, support the end of the Barrel and
press out old Nozzle.
ASSEMBLY
leather–covered or copper–covered vise jaws. Take
extra care with threaded parts and housings.
thin film of oil before installation.
final assembly.
or copper–covered jaws with large or threaded end up.
sequence: Valve Seat (12), Valve (11) and Valve Box
(10). Align holes in Valve, Valve Seat and and Valve
Box and install Dowel Pins (12A).
threaded end of Barrel with Valve Seat down.
torque.