TO DISASSEMBLE
Jaws, magazine and pusher assembly
1. Remove lock nuts, washers and latch spring (#20, #19 and
#18) from jaw bolts (#35).
2. Remove jaw bolts from tool, this allows the magazine
(#34), pusher assemblies, latch (#21) and jaws, jaw
bushings and spring washers (#22, #25, #23 and 57) to be
removed from the tool.
Feeder blade and rollers
1. Remove button head screw (#42) from trigger guard (#26).
2. Remove (2) socket head cap screws (#41) with lock nuts
(#17).
3. Remove side plates, trigger guard, trigger and roll pins
(#16, #26, #27 and #11).
4. Remove (4) rollers, (2) roller pins, feeder blade shim and
feeder blade (#13, #14, #15 and #24).
Piston and Piston Rod
1. Remove (4) button head screws (#1) from rear of tool.
2. Remove pusher hook bracket, end cap and end cap gasket
(#2, #3 and #4).
3. Slide piston rod (#12) completely through tool housing,
exposing piston end.
4. Place tool into vise clamping down on flat areas of piston
rod (do not over-tighten so as not to deform feeder blade
slot).
5. Apply heat as needed to break down thread lock adhesive
on threaded end of piston rod.
6. Remove piston (#6) with 9/16” open end or adjustable
spanner wrench.
7. Piston rod (#12) may now be removed from front of tool.
Throttle
1. Remove (1) button head screws and air deflector (#39 and
#48)
2. Loosen set screws (#9) on both ends.
3. Remove rear valve seat (#47).
4. Remove throttle spring (#46).
5. Remove front valve seat (#41) and throttle stem (#40) using
a 3/16” wrench.
6. Using two 9/64” Allen wrenches, unscrew throttle valve
screws (#46) to remove valve units. Hint: Hold tool so that
the valve is vertical to help prevent loosing parts.
7. One valve screw will remain with other valve parts on
throttle valve spacer (#49), and can be disassembled after
removal from housing.
8. 1/8” NPT plug (#10) is to be removed only during manifold
kit installation.
TO RE-ASSEMBLE
1. Assemble one side of the o-ring support assembly (#46,
#52, #50, #8, #51, #8 and #50) on throttle valve spacer
(#49). The chamfer on both washers (#52) should be
installed, with chamfer side against cap screw head (#46).
2. Hold tool vertically and install o-ring support assembly with
spacer into throttle bore from the top.
3. Holding cap screw with a 9/64” Allen wrench, bring second
o-ring support assembly (mounted on screw (#46)) in from
the opposite side and complete valve assembly. The valve
should have free motion of travel of about 3/32”
[.09”(2.3mm)].
4. Insert valve spring (#53) into the rear of the valve assuring
that the small loop is inserted into the hex of the cap screw
(#46).
5. Insert throttle stem (#43) into front valve seat (#44) and
slowly screw front valve seat with lubricated o-ring (#45)
into front of the valve bore. (See Throttle Valve Adjustment
Procedure).
6. Screw rear valve seat (#54) with lubricated o-ring (#45) into
rear of the valve port.
7. Install o-ring (#8) into housing from the front piston rod
bore.
8. Slide piston rod (#12) into front of housing. Be careful not
to damage o-ring (#8) when pushing piston rod into
housing, use lubrication.
9. Place o-ring (#5) onto piston (#6).
10. Apply Loctite #242 or equivalent onto threads of piston rod
(#12).
11. Slide piston with o-ring into housing end, aligning piston
with piston rod. Be careful of piston o-ring when inserting
piston, use lubrication on the o-ring.
12. Use 9/16” open end or adjustable spanner wrench to tighten
piston while holding flat areas of piston rod.
13. Mount the pusher hook bracket, end cap and gasket (#2, #3
and #4) with notch in properly aligned to the housing use
(4) button head screws (#1).
14. Mount feeder blade and feeder blade shim (#24 and #15)
with two roller pins (#14) on the piston rod (#12).
15. Place rollers (#13) on the roller pins (#14). Lubrication will
hold the rollers in place while assembling the rest of the
tool.
16. Assemble trigger, trigger guard and side plates (#27, #26
and #16) together with (3) roll pins (#11).
17. Verify that valve stem is still inserted into front valve seat.
18. Slide side plates (#16) with trigger and trigger guard into
place on the housing (slight force may be used to place the
side plate assembly onto the key on housing).
19. Insert (2) socket head cap screws (#41) from magazine side
of tool to secure side plate assembly to the housing and
install lock nuts (#17).
20. Leave trigger guard loose for adjusting the valve. See
Throttle Valve Adjustment Procedure for proper valve
adjustment instructions.
21. Attach pusher spring (#37) in uncoiled position to pusher
(#38) using roll pin (#39).
22. Insert slotted spring bolt (#29) through spring spool bracket
(#40) and loosely tighten with Flexlock nut (#36).
23. Align spring end with hole in spring spool bracket and pass
end of spring through the slot in the slotted bolt.
24. Using an Allen wrench, turn slotted bolt to wind spring
until pusher just pulls off the end of the magazine.
25. Tighten spring bolt (#29) with Flexlock nut (#36).
26. Mount latch (#21) onto side plate (#16) side opposite the
magazine.
27. Install jaw bushings (#23) into jaws (#22 and #25).
Lubricate both jaws and bushings before installing them.
28. Install spring washer (#57) on jaw bushing.
29. Place jaws with bushings between the side plates.
30. Mount spring spool bracket, magazine and magazine shims
(#40, #34, #28 and #32) onto side plate. Place (2) .030”
shims (#28) and (1) .010” magazine shim (#32) under the
magazine foot, between magazine and side plate. Other
shims may be added or subtracted to get the proper drop in
the magazine shoe. See Magazine Adjustment Procedure.
31. Insert jaw bolts (#35) through the spring spool bracket,
magazine, shims, side plate, jaw bushing, side plate, latch
spring (#18) and washers (#19). Secure jaw bolts with
nylock nuts (#20). Do not over tighten jaw bolts, jaws must
still pivot freely.
32. After all adjustments to the tool are made, the trigger guard
is secured with button head screw (#42).
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