FF-MM-300-REV - 00
Page 8
Operation and Maintenance Guide Pneumatic Needle Scalers
Diassembly and Re-assembly for SN24PG
a. Shut off air supply and allow residual Pres-
sure to bleed off.
b. Unscrew Allen Bolt (21) from Straight
Front Tube (18) & remove.
c. Unscrew similar Allen Bolt (21) from In-
termediate Tube (19) & remove Anvil (16),
Needle Holder (17) with Needles (22) and
Compression Spring (20) from Intermedi-
ate Tube (19) and replace it with new ones.
(If found damaged/worn-out)
d. Unscrew Cylinder (1) from Cover Assem-
bly (6), Now remove Piston (4), O-ring
(3),& O-ring (2) from Cylinder (1) and
replace it with new ones (If found dam-
aged/worn-out).
e. Unscrew Valve Body (7) from Cover Assem-
bly (6) & remove rubber handle grip (5).
f. Unscrew Valve Cap (8) with O-ring (9) on
Valve Body (7). Now remove Valve Spring
(10) and Valve Stem (11) with O-ring (12)
from Valve Body (7) and replace with new
ones. (If found damaged/worn-out)
g. Remove O-ring (9) on Valve Cap (8) and
replace with new one.
h. Remove Roll Pin (14) on valve body (7) &
remove throttle Lever (13).
i. Coat parts with the recommended light oil
before re-assembling. Now follow the above
steps in reverse manner to reassemble the
Needle Scaler.
