Always use the following
Pressure Relief Procedure
whenever shutting off, cleaning,
or in any way checking or servicing the control
handle:
1) Disconnect compressed air line or turn off
power supply at the fluid pump.
2) Point the control handle outlet into a waste
container and open trigger to relieve pressure.
3) Open any bleed-type supply air valves and
fluid drain valves in the system.
4) Leave the drain valves open until you are
ready to re-pressurize the system.
WARNING
!
Replace the Lower Seals:
Remove foot valve
(29) from pump tube (20). Remove and inspect
pins (30), foot valve ball (22) and o-ring (23),
inspect, and replace if required. Remove pump
tube (20) from adapter (17) and slide off. Grip
rod (30) with spanner wrench and use a spanner
wrench to remove fluid piston nut (25). Inspect
the fluid piston ball (4), spring (21), quad ring
(27) and wear band (28) on the fluid piston nut
(25). Inspect and replace as required. Remove
the six socket head screws (23) from housing
(22). Slide adapter (17) off over rod (26). Place
adapter (17) on bottom and remove six screws
(24) on top. Fluid seal (16) is now accessible.
Change as required. Reassemble in reverse
order,
being sure to use grease (#826733) on
seal (16) to ease reassembly. Be sure to insert
pump rod (26) from the bottom of the adapter
(17) so as not to destroy new seal (16).
Pump Repair/Servicing
Model #1130-009:
Pump Disassembly / Reassembly:
Using a
soft jaw vise or a suitable fixture, clamp the
pump horizontally on the small diameter of the
housing (22).
Removing the Air Motor:
Remove nut (12)
and u-washer (11) from cap (8). Remove cap
(8) from housing (22). Remove foot valve (29)/
pump tube (20) assembly from adapter (17)
and slide off. Remove six socket head screws
(23) from housing (22). Grip rod (26) with a
spanner wrench then use a spanner wrench to
remove fluid piston nut (25). Grip rod (26), pull
air motor assembly downward until the rod can
be slid out of the “saddle” stem (33). Reach
into the top of the housing and remove the air
motor. The air motor and the housing o-ring (3)
can now be serviced. Reassemble in reverse
order,
being sure to use grease (#826733) on
all seals and o-rings.
Replacing the Air Motor Seals:
Place air
motor on clean work surface with the air valve
mechanism up. Remove eight screws (58), four
posts (57) and the rest of tripping assembly (39,
50, 40, and 38).
Take care not to lose small
parts.
Unscrew flange nuts (41) and remove.
Remove plastic washers (37) and valve bar
(51), replace plastic washers (37) as needed.
Replace o-rings (34) on valve stems (44 and 45)
as needed. To remove top spring (47), remove
plastic washer (49) and rod (48) will slide out
of valve bar (51). Snap lower spring (47) off
sleeve (54) and slide off rod (48). Reassemble
in reverse order,
being sure to use grease
(#826733) on all seals and o-rings.
Note:
The air motor is lubricated with
a life-tested synthetic grease (#826733) at
the factory. This grease coats all parts and
repels air line moisture to inhibit corrosion.
It is imperative that any grease removed
during maintenance be replaced afterwards.
Contact your local Balcrank
®
distributor,
using the above part number, for
replacement grease.
