FF-MM-300-REV - 00
Page 20
Operation and Maintenance Guide Pneumatic Needle Scalers
Diassembly and Re-assembly for SN45PGVL
a. Shut off air supply and allow residual Pres-
sure to bleed off.
b. Unscrew Front tube (17) from Interme-
diate Tube (8) & remove Insert (16) and
Front Spring (15).
c. Remove O-ring (10), Needle Holder (13)
with Needles (14) and Piston (11), Piston
Cushion (7) from Intermediate Tube (8).
Now remove Piston Ring (12) and Valve
Pin (19) from Piston (11) and replace it
with new ones. (If found damaged/worn-
out)
d. Unscrew Intermediate Tube (8) from Cov-
er Assembly (20).
e. Remove O-ring (10) from Guide Plate (4)
& remove Ball Retaining O-ring (3) and
Ball (2) from Cylinder (6) to replace it
with new ones. (If found damaged/worn-
out)
f. Unscrew Valve Body (21) from Cover
Assembly (20).
g. Remove Rubber Grip (1) from Cover
Assembly (20) and replace with new
ones. (If found damaged/worn-out)
h. Unscrew Valve Cap (22) with O-ring
(23) from Valve Body (21) & remove
Valve Spring (24), Valve Stem (25) and
O-ring (26) to 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 (27) to re-
place 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 reas-
semble the Needle Scaler.
