Ingersoll Rand IR15BV Operación Y Mantenimiento página 51

DISASSEMBLING THE IR15BV AND IR15BS PAVING BREAKER
GENERAL INSTRUCTIONS
• Clean the breaker outer surface.
• Do not disassemble the breaker any further than neces-
sary to replace or repair damaged or worn parts.
• Whenever grasping a breaker or a part in a vice, always
use leather or copper -covered vice jaws to protect the
surface of the part and help pre vent distortion. Take
extra care with threaded parts and housings.
• Do not remove any part that is a press fi t in or on a sub-
assembly unless the removal of the part is necessary for
repairs or replacement.
• Do not disassemble the breaker unless a com plete set of
and O-rings is available for re place ment.
DISASSEMBLY OF THE FRONTHEAD
Remove nut (25) and fronthead pinch bolt (24) from the front-
head (3). Lightly tap the fronthead (using a hide mallet if
necessary) from the cylinder (1).
Press or drift out the two fronthead spring pins (22, 23) and
remove the latch (6).
The plunger (20) and the plunger spring (21) can be removed
from the fronthead.
Handle Disassembly (BV and BS models)
Using a hide mallet tap loose and remove the muf fl er (29)
and the muffl er ring (32) from the cylinder.
Firmly grip the cylinder upright in a vice with leath er or
copper covered jaws.
Loosen the four-handle nuts (27), unscrew and re move the
four-handle screw's (26).
Lift the handle assembly (5) or (42) from the cyl in der (1) (tap
with a hide mallet if necessary).
For BV models only: Press or tap out the handle pivot pin
(12), remove both handle levers (8 and 9) from the handle
body (5) together with the trigger (7). Tap out the sleeve (13)
to detach the handle le vers from each other. Remove the
handle springs (11) from the handle body (5). If it is neces-
sary to remove the handle lever stop (14), use a punch of a
suitable size (∅15 – 19 mm) and drift the stop out from the
cylinder side.
It is possible to remove the trigger pin (15) at this stage if
required.
Unscrew the inlet bushing (18), and remove trigger spring
(17) the trigger ball (16) and throttle pin (15). Remove the
handle screws (40) and washers (39) (if fi tted) and remove
the handle grips (10). It may prove eas i er to cut off the old
handle grips if they are to be replaced.
For BS models only: Drift or press out the spring pin (45)
and remove the trigger lever (44)
The trigger pin (46) may be removed at this stage if re-
quired.
Removal of the handle bar (43) from the casting should not
normally be necessary. If this is required fi rst cut off the rub-
ber hand-grips (10) and drift or press out the lock spring pin
(45). Securely support the handle body (42) beneath a press
and using a suitably sized pressing bar press the handle bar
out of the handle body.
Unscrew the inlet bushing (18), and remove trigger spring
(17) the trigger ball (16) and trigger pin (46).
Remove the handle screws (40) and washers (39) and remove
the handle grips (47). It may prove easier to cut off the old
handle grips if they are to be replaced.
Cylinder Disassembly
Remove the spacing washer (30) from the valve cov er. Lift
off valve plate (31), and slide valve (35), out from the valve
body (36), valve ring (37).
Remove the two valve pins (38) from the cylinder.
Release the cylinder from the vice, invert and allow the piston
(4) to slide out and be caught.
The nozzle (2) is pressed in the cylinder and re tained with
Loctite 601 – do not disassemble unless re place ment is nec-
essary.
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