Ingersoll-Rand IR17JV Bedienungsanleitung Seite 52

ASSEMBLY OF THE IR17JV AND IR17JS JACKHAMMER
GENERAL INSTRUCTIONS
• Before assembly of the jackhammer, clean all parts thor-
oughly dry off and inspect carefully for signs of wear.
• Lubricate all moving parts with recommended oil (see
Lubrication).
• Apply a thin film of O-ring lubricant to all O-rings before
final assembly.
ASSEMBLY OF THE HANDLE ASSEMBLY
JV MODELS
If the handle stop (35) was removed during disassembly it
should now be replaced. Use a new part, as the retaining
feature of the handle stop is severed on removal.
Locate the handle stop in position and tap sharply home us-
ing a soft drift and hammer.
If the hand grip rubbers (39) were removed these should
now be replaced.
Lubricate the inside of the hand grip rubber (39) with soapy wa-
ter and slide the new grips into position on the handle levers.
Grip handle body (33) in leather or copper covered vice jaws.
Position the handle levers (37) together. Lubricate and replace
the sleeve (42) to loosely retain handles together.
Locate both handle springs (36) in position inside the handle
body slot.
Slide the handle levers and sleeve assembly into position in
the slot of the handle body (33) fix the assembly in place by
drifting or pressing in handle trigger pin (34).
ASSEMBLY OF HANDLE ASSEMBLY
JS MODELS
Grip handle body (44) in leather or copper covered vice jaws.
If the hand grip rubbers (46) were removed these should
now be replaced. Lubricate the inside of the rubber grip
with soapy water and slide the new grips into position on
the spacer tubes (45).
Thread a spacer tube (45) complete with handgrip rubber
(46) over handle bar (47).
Thread handle bar into handle body (44).
Assemble remaining spacer tube (45) complete with handgrip
rubber (46) over handle bar and secure with washer (48) and
nut (49).
ASSEMBLY OF CYLINDER HEAD
Grip cylinder head (27) in leather or copper covered vice
jaws.
Lubricate and replace the throttle detent plunger spring (25)
and throttle detent plunger (26) in position in the throttle
lever (24).
Locate the throttle lever (24) in position in the cylinder head
(27). Should the throttle lever (24) be replaced, the new part
should be lapped in using grinding paste, to its mating ta-
pered hole in the cylinder head (27).
Lapping is complete when a continuous band is visible
around the taper sides of the throttle lever and the cylinder
head hole.
Clean the assembly of all traces of grinding paste thoroughly
before further assembly.
Clean, lubricate and replace the 14 ball bearings (30) and
using a suitable size drift, tap home the plastic closing pin
(31) to secure the assembly.
Check the throttle valve (24) is free to rotate.
Renew and lubricate the inlet O-ring seal (28) in the groove
on the air inlet (29). Locate the air inlet (29) in position in
the cylinder head (27). Clean, lubricate and replace the 14
ball bearings (30) and using a suitable size drift, tap home
the plastic closing pin (31) to secure the assembly.
Check the air inlet (29) is free to rotate.
Replace the quick coupling (32) using "Loctite 2701" thread
sealing liquid, if the quick coupling was removed.
52
ASSEMBLY OF MOTOR COMPONENTS
Clean the rifle bar (20) and rotation pawls (21) thoroughly
and inspect the ends of the pawls for wear. If wear is evident
the pawls can be removed and turned around in their slots to
provide a second period of life. If the both edges of the pawls
(21) are worn they should be replaced as a set along with new
springs (23) and plungers (22).
Inspect the rifle bar (20) for signs of excessive wear of the
splines. Lubricate and reassemble the pawl springs (23) pawl
plungers (22) and pawls (21) with the rifle bar (20).
Replace the blow tube (19) and seal (18). Use tool no.3 in the
maintenance kit cpn 15909492 or manufacture a blow tube
tool as per the drawing on page 53 of this manual, to prevent
bending of the blow tube upon assembly.
Thread the rifle bar assembly (20) through ratchet plate (17)
and engage the pawls.
NOTE: only one pawl is engaged with the ratchet plate at
any time.
Thread valve cap (16) over rifle bar (20) until it butts up to
ratchet plate (17). Slide valve housing (15) into position and
locate on valve cap (16). Replace slide valve (14) and valve
body (13). Check for free rotation of rifle bar and listen for
valve movement when the assembly is shaken.
Replace the rifle nut (12) in the piston (11) and tighten fully
by hand using the rifle bar. Note the rifle nut has a left hand
thread.
Lubricate the splines of the rifle bar (20) and engage with
the mating splines of the rifle bar nut (12) contained in the
piston (11).
Lubricate and assemble the cylinder (9) by sliding over the
piston then replace impact sleeve (6).
Renew O-ring (8) and slide muffler (7) into position. Thread
side bolts (43) through the assembly to retain the components
in position.
ASSEMBLY OF THE FRONTHEAD
Grip the front head (3) in leather or copper covered vice jaws
and locate one end of the retaining spring (1) in position. Use
a flat bar as a lever to stretch the spring until the other end
can be located in position.
CAUTION: There is considerable energy stored in the spring
take care to wear eye protection and gloves. Guard against
sudden energy release
Replace chuck-nut (5) in the chuck (4) Note the left-hand
thread.
Lubricate chuck (4) and slide into fronthead (3) check the
chuck is free to rotate.
Locate the splines of the chuck nut (5) with those of the
piston (11) and slide the fronthead complete with chuck into
position. Locate the two-side bolts (43) through the flange of
the fronthead. Replace the two side rod nuts (2) and tighten
evenly to a torque of 40 Nm (30 -ft.lbs).
Following service the jackhammer should be checked for cor-
rect operation prior to being released back to the job site.
Fit the correct accessory into the jackhammer and connect
to an airline. Caution: The throttle should be moved to the
off position (90 degrees to axis of the hammer).
Use low-pressure air initially to verify the jackhammer is
free from leaks around the inlet connection and the tool runs
and rotates.
Increase the air pressure to 6 bar and operate the tool in
short burst to check the tool starts and stops cleanly without
hesitation
Operating frequency should be 2040 blows per minute (34
Hz) with 170 revs per minute of chisel rotation.
The air consumption should be 2.8 M 3 /min @ 6 bar