6
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46
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466 6666 6666
6-4.8 REASSEMBLY OF CYLINDER.
a. If piston rod bushing (42) was removed, install
squarely into cylinder (47) in the same
orientation noted during disassembly. The
piston rod bushing should slide smoothly
down the cylinder bore until it rests against its
mating shoulder. Check that it is not cocked in
the bore. Install both springs (40), with spring
guide bushing (41) between the springs, down
the cylinder bore.
b. If setscrew (48) was removed, apply Henkel
Corporation, L o c t i t e 2 7 1 , to the threads and
install in cylinder (47). If Dowel pin (14) was
removed, press into the cylinder. Insert pilot
tube (43) into the cylinder until it bottoms and
insert new o-ring seal (44) in its groove around
the pilot tube bore.
6-4.9 REASSEMBLY AND INSTALLATION OF
PISTON ASSEMBLY.
a. Assemble piston U - c u p s e a l ( 3 5 ) , bumper
(36), and wear ring (34), (oriented the same as
noted during disassembly - "U" faces t h e
b u m p e r on the piston. Note: Lubricate the
U-cup before installation with Marvel ®, Air Tool
Oil, Turtle Wax, P.O. Box 247, Westmont, IL
60559 (Paratech PN 550291).
b. Install the piston assembly through springs
(40), spring guide bushing (41), piston rod
bushing, (42) and into cylinder (47). The
assembled piston should slide freely back
and forth within the cylinder assembly.
Note: Lubricate the piston and bushings before
installation with Marvel ®, Air Tool Oil, Turtle
Wax, P.O. Box 247, Westmont, IL 60559
(Paratech PN 550291).
6-4.10 REASSEMBLY AND INSTALLATION OF THE
SHUTTLE VALVE ASSEMBLY.
a. If setscrew (32) was removed, apply Henkel
Corporation, L o c t i t e 2 7 1 , to the threads and
install in valve body (31).
b. Insert push rod (28) into valve body (31). Press
backup washer (30) and new U-cup seal (29)
(oriented the same as noted during
disassembly – “U” faces toward back of gun)
onto the push rod. Lubricate the U-cup before
installation with Marvel ®, Air Tool Oil, Turtle
Wax, P.O. Box 247, Westmont, IL 60559
(Paratech PN 550291).
c. Insert new o-ring seals (27) in their grooves in
valve body (31) and valve cover (26).
d. Apply Henkel Corporation, L o c t i t e 2 7 1 , to
the threads of screws (25) and with holes in the
valve cover (26), valve body (31) and cylinder
(47) aligned, install the screws with lock
washers (51) and tighten evenly to 15 foot-
pounds (20.4 N-m).
e. Install D handle into slot in valve cover. Apply
Henkel Corporation, L o c t i t e 2 7 1 , to screw
(22) threads. Secure the D handle in position
with the screw and lock washer (23). Torque
the screw to 20 foot-pounds (27.2 N·m).
f.
If label(s) (45, 45A, 46, or 50) were removed,
remove backing and press onto cleaned
surface of cylinder (47) to adhere in place.
6-4.11 REASSEMBLY AND INSTALLATION OF
HANDLE ASSEMBLY.
a. Assemble
new
o-ring seals
(7
and
10)
in
their
grooves in trigger valve plunger (8). Slide
trigger spring (9) over the trigger valve plunger.
If trigger link (11) and the trigger valve plunger
were disassembled, Henkel Corporation,
L o c t i t e 2 7 1 , to the threads of the trigger link
and screw into the trigger valve plunger until
an overall length dimension of 5.120” (130
mm) (end-to-end) is achieved.
b. Install trigger valve plunger (8) with assembled
trigger link (11) into handle (12). Install spring
pin (39) through upper hole in trigger lever (4),
hole in the handle, hole in the trigger link and
then out through the handle and trigger lever. It
may be necessary to press the trigger valve
plunger forward within its recess to properly
position the hole in the trigger link. Pin the
trigger lever to the handle with a second spring
pin (3).
c. Insert new o-ring seals (6) into their grooves in
trigger valve plug (5) and carefully screw the
trigger valve plug into handle (12). Do not apply
a thread sealant to the trigger valve plug
threads. Check through handle hole where
dowel tube (13) is installed to be sure the front
o-ring seal (6) does not distort and tear/abrade
as the trigger valve plug is screwed into the
handle. It may be necessary to press a small
dowel rod down the hole to restrain the o-ring
seal within its groove.
6 - 5
With the trigger valve plug fully tightened into
