TO DISASSEMBLE
Jaws, magazine and pusher assembly
1. Remove screw (#28) from magazine and feeder guide rail (#31
and #40).
2. Remove (2) button head screws (#1) from rear of feeder guide
rail.
3. Remove lock nuts, washers and latch spring (#19, #18 and #17)
from jaw bolts (#34).
4. Remove jaw bolts from tool, this allows the magazine and
pusher assemblies, latch (#20) and jaws (#21 and #23) with
jaw bushings (#22) to be removed from the tool.
Feeder blade and rollers
1. Remove button head screw (#42) from trigger guard (#24).
2. Remove (2) socket head cap screws (#41) with lock nuts (#16).
3. Remove side plates, trigger guard, trigger and roll pins (#15,
#24, #25 and #10).
4. Remove (4) rollers, (2) roller pins, feeder blade and feeder
blade shim (#12, #13, #14 and #56).
Piston and Piston Rod
1. Remove the remaining button head screws (#1) from rear of
tool.
2. Remove end cap and end cap gasket (#2 and #3).
3. Slide piston rod (#11) so that the piston end is exposed out of
the housing.
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 (#5) with 9/16” open end or adjustable spanner
wrench.
7. Piston rod (#11) and bumper (#57) may now be removed from
front of tool.
8. Remove piston rod o-ring (#7) using machinist scribe from the
clearance hole at the front of tool (side plate mtg. end).
Throttle
1. Remove screw and air deflector parts (#28 and #52).
2. Loosen set screws (#8) on both ends.
3. Remove rear valve seat (#51).
4. Remove throttle spring (#50).
5. Remove front valve seat (#44) and throttle stem (#43) 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 (#9) is to be removed only during manifold kit
installation.
TO RE-ASSEMBLE
1. Assemble one side of the o-ring support assembly (#46, #55,
#53, #7, #54, #7 and #53) on throttle valve spacer (#49). The
chamfer on both washers (#55) 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 an 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 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).
5. Insert valve spring (#50) into the rear of the valve assuring that
the locator is inserted into the hex of the cap screw (#46).
6. Screw rear valve seat (#51) with lubricated o-ring (#45) into
rear of the valve port.
7. Install o-ring (#7) into housing from the front using the piston
rod clearance hole.
8. Install bumper (#57) onto piston rod (#11) so the tabs are at the
threaded end of the piston rod.
9. Slide piston rod (#11) into front of housing. Be careful not to
damage o-ring (#7) when pushing piston rod into housing, use
lubrication.
10. Place o-ring (#4) onto piston (#5).
11. Apply Loctite #242 or equivalent onto threads of piston rod
(#11).
12. 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.
13. Use 9/16” open end or adjustable spanner wrench to tighten
piston while holding flat areas of piston rod.
14. Mount the end cap (#2) with notch in gasket (#3) properly
aligned to the housing using only two button head screws (#1)
as shown in exploded view.
15. Mount feeder blade, feeder blade shim and two roller pins
(#14, #56 and 13) on piston rod (#11).
16. Place rollers (#12) on the roller pins (#13). Lubrication will
hold the rollers in place while assembling the rest of the tool.
17. Assemble trigger and trigger guard (#25 and #24) to the side
plates with (3) roll pins (#10).
18. Verify that valve stem is still inserted into front valve seat.
19. Slide side plates (#15) with trigger and trigger guard into place
on the housing (slight force may be used to place the side
plates onto the key on housing).
20. Insert (2) socket head cap screws (#41) from magazine side of
tool and install lock nuts (#16).
21. Leave trigger guard loose for adjusting the valve. See Throttle
Valve Adjustment Procedure for proper valve adjustment
instructions.
22. Insert roll pins (#26) into pusher (#27) from both sides.
23. Install pusher onto feeder guide rail (#40) by sliding feeder
guide rail through the spacer between the roll pins and the
pusher body. Make sure that the pusher is in proper
orientation, see parts diagram.
24. Mount constant force spring (#35) onto spring spool bracket
(#38) using roll pin (#37). Make sure that spring is in the
proper orientation, see parts diagram.
25. Install feeder guide rail onto spring spool bracket using roll pin
(#37).
26. Attach the constant force spring (#35) onto pusher (#27) with
button head cap screw (#28) (feed the spring through the large
opening in pusher).
27. Attach feeder guide rail to rear of housing using button head
cap screws (#1).
28. Mount latch (#20) onto side plate (#15) side opposite the
magazine.
29. Install jaw bushings (#22) into jaws (#21 and #23). Lubricate
both jaws and bushings before installing them.
30. Place jaws with bushings between the side plates.
31. Slide magazine assembly into position between spring spool
bracket and side plate. Attach the magazine assembly to the
rear of the feeder guide rail using button head cap screw (#28).
But do not tighten completely.
4 of 6 01/03
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