Ingersoll Rand IR15BV Operación Y Mantenimiento página 52

ASSEMBLY OF THE IR15BV AND IR15BS PAVING BREAKERS
GENERAL INSTRUCTIONS
• Before assembly of the breaker, clean all parts thor ough ly
and lubricate surfaces with a thin fi lm of rec om mend ed
oil (see Lubrication).
• Apply a fi lm of O-ring lubricant to all O-rings be fore fi nal
assembly.
• It is recommended that the assembling of the noz zle (2)
and the liner (33) should be carried out by the man u fac-
tur er or authorised dis trib u tor.
• The existence of a piston air cushion should be de ter-
mined. Hold the cylinder vertically and al low the piston
to drop down the bore small di am e ter fi rst. An air cush-
ion is present if the pis ton "bounc es" at the bottom of
the cylinder and no metal to metal contact noise can be
heard. If a cushion is not present contact your authorised
In ger soll –Rand re pair centre for advice.
CYLINDER ASSEMBLY
Grip the cylinder (1) vertically in a vice protected with leath er
or copper covered vice jaws.
Lubricate and insert the piston (4) small end fi rst into the
bore. - Check for cushion.
Position valve location pins (38) into the holes in the end of
the cylinder.
Lubricate and slide the valve (35) into the valve body (36)
renew valve ring (37) and replace valve cover (31) over valve
body.
Grip the assembly and shake to check that the valve can be
heard to move freely.
Locate the valve assembly onto the location pins (38) and
position the valve spacer (30) on top.
Replace the sealing ring (28).
HANDLE ASSEMBLY
BV models only:
If the handle stop (14) was removed during dis as sem bly it
should be replaced with a new part as the re tain ing feature is
severed on removal. Locate the stop in the hole in the han dle
and tap sharply into place using a soft drift and hammer.
If the hand grip rubbers (10) have been removed these should
now be replaced. Lubricate the inside of the rubber with soapy
water and slide the new rubber into position, retain each rub-
ber with wash er (39) and screw (40) (if fi tted).
Assemble left and right hand, hand grips (8 and 9), trigger (7)
together with sleeve (13), lubricate around the pivot area and
position the sub assembly along the slot in handle body (5).
Note it is usual to position the trigger lever on the same
side as the air inlet of the handle body.
Locate the handle springs (11) between hand grips and han dle
body and fi x the assembly in place by drift ing or pressing in
handle pivot pin (12).
Lubricate the trigger pin (15) , trigger ball (16) and replace
in the air inlet connection of the handle body.
Note the trigger pin has a reduced diameter which is
placed next to the trigger ball.
Locate the trigger spring (17) on top of the trigger ball. Ap ply
thread retainer (loctite 243, or similar) on the thread of the
inlet bushing (18) and tighten to 200 Nm (147 lb.ft) torque.
Check that the handles and trigger move freely.
BS models only:
If the handle bar has been disassembled from the handle
body.
Securely support the handle body (42) beneath a press and
position the handle bar (43) in the mating body hole.
Note: Ensure that the handle bar has the cor rect ori-
52
en ta tion and alignment to accept the trigger pin (45)
when pressed home.
Press home the handle bar to depth until the lock pin-hole
is aligned.
Press or drift in the lock spring pin.
Lubricate and replace the trigger pin (46). Note the trigger
pin has a reduced diameter which is placed next to the trig-
ger ball.
Check that the trigger pin can move freely.
Position the trigger lever (44) and secure in place with spring
pin (45)
Lubricate the trigger pin (46), trigger ball (16) and replace
in the air inlet connection of the handle body.
Note the trigger pin has a reduced diameter which is
placed next to the trigger ball.
Locate the trigger spring (17) on top of the trigger ball. Ap ply
thread retainer (loctite 243, or similar) on the thread of the
inlet bushing (18) and tighten to 200 Nm (147 lb.ft) torque.
Check that the trigger moves freely.
Lubricate the inside of the handle grip rubber (47) with soapy
water and slide the new rubber into po si tion.
MAIN ASSEMBLY
Lightly grip the cylinder assembly vertically in a vice and
position the handle assembly in place.
Note that it is usual to orientate the trigger le ver and
air inlet 180 degrees from the front head bolt groove
in the cylinder.
Replace the four handle screws (26) use new handle nuts
(27) and tighten down evenly to a torque of 90 Nm (66.4
lb.ft) torque.
Remove the cylinder and handle assembly from the vice.
Assemble muffl er ring (32) in muffl er (29) and re place the
assembly by tapping the muffl er fully home using a hide
mallet.
FRONT HEAD ASSEMBLY
Apply a coating of grease then replace spring (21) and plung er
(20) in position in fronthead (3).
Position the latch (6) in its slot and secure in place by drift-
ing or pressing in outer spring pin (23). Po si tion then press
or drift home inner spring pin (22).
Replace fronthead assembly onto cylinder and align ing pinch
bolt hole with the cylinder groove.
Replace pinch bolt (24) and nut (25) and tighten a torque of
90 Nm (66.4 lb.ft) torque.
ASSEMBLY CHECKS
Following service the breaker should be checked for correct
operation prior to being released back to the job site.
Fit the correct size accessory into the breaker and con nect to
an airline. Using air at low pressure 2 bar (30psi), check that
the breaker is free from air leaks around the inlet con nec tion
and that the break er does not au to mat i cal ly start to operate
without the trigger being depressed.
Increase the air pressure to 6 bar (90psi) and run the tool
in short bursts to check the tool operates cor rect ly and stops
and starts cleanly without hes i ta tion.
Breaker operating frequency should be 1200 blows per minute
and air consumption 0.7m
pressure.
3 /min (26CFM) at 6 bar (90psi) air