FF-MM-300-REV - 00
Page 14
Operation and Maintenance Guide Pneumatic Needle Scalers
Diassembly and Re-assembly for S39PGVL
a. Shut off air supply and allow residual Pres-
sure to bleed off.
b. Unscrew Front tube (18) from Interme-
diate Tube (12). Now remove Insert for
Front Tube (16) and Front Spring (20)
from Front Tube (18).
c. Remove O-ring (17), Needle Holder (14)
with Needles (15) and Piston (10), Piston
Cushion (13) from Intermediate Tube
(12). Now remove Piston Ring (11) and
Valve Pin (9) from Piston (10) and replace
it with new ones. (If found damaged/
worn-out)
d. Unscrew Intermediate Tube (12) from
Cover Assembly (1).
e. Remove O-ring (4) from Guide Plate (2).
Now remove Ball Retaining O-ring (7) and
Ball (8) from Cylinder (6) and replace it
with new ones. (If found damaged/worn-
out)
f. Unscrew Valve Body (21) from Cover As-
sembly (1).
g. Remove Rubber Grip (19) from Cover As-
sembly (1) and replace with new ones. (If
found damaged/worn-out)
h. Unscrew Valve Cap (22) with O-ring (23)
from Valve Body (21). Now remove Valve
Spring (24), Valve Stem (25) and O-ring
(26) and replace with new ones. (If found
damaged/worn-out)
i. Remove O-ring (23) from Valve Cap (22)
and replace with new one.
j. Remove Roll Pin (28) from Valve body (21
& remove Throttle Lever (27and replace
with new ones. (If found damaged/worn-
out).
k. Coat parts with the recommended light oil
before re-assembling. Now follow the above
steps in reverse manner to reassemble the
Needle Scaler.
