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9. For o.c. systems, place the spring (18) over the threaded
surface of the piston (15) and then screw the piston into the
piston nut (19) using Loctite™ 242. Screw the complete as-
sembly onto the piston rod (21) using Loctite™ 242.
10. Apply grease and install the o-rings (13 & 14).
11. Apply hydraulic fl uid to the cylinder bore, the cylinder
oil tube and the outer surfaces of the piston and piston rod
and then slide the piston and piston rod assembly into the
cylinder and over the cylinder oil tube.
TUBE COUPLING
12. Apply grease and install the back-up ring (23) and o-
ring (22) into the tube coupling (26). Install the back-up ring
fi rst. Apply grease and install the o-ring (13).
13. Apply hydraulic fl uid to the interior surfaces of the tube
coupling and then slide the tube coupling over the piston
rod and screw it into the cylinder. Hard tighten the tube cou-
pling to the cylinder.
INTERNAL TUBE ASSEMBLY
14. Screw the internal tube onto the piston rod using Loc-
tite™ 242 and then hard tighten.
15. Pull out on the internal tube until the piston stops
against the end of the tube coupling. This is an important
step toward completing adjustments which are instructed
later in this section titled "FINAL ADJUSTMENTS".
EXTERNAL TUBE ASSEMBLY
16. Install the lock nut (27) onto the tube coupling.
17. Slide the external tube assembly (28) over the internal
tube assembly, as shown in the parts drawing, and screw
it onto the tube coupling. Do not tighten the lock nut at this
time.
KNIFE BLADE, HOOK, LINK BAR &
SLIDE HEAD DISASSEMBLY
18. Screw the slide link bolt (25) into the internal tube using
Loctite™ 242 and hard tighten.
19. Apply grease and install the o-ring (24) into the slide
head assembly (38). Apply a light coating of grease to the
slide link bolt, the end of the internal tube, and the slot of
the slide head assembly and then slide the slide head as-
sembly over the slide link bolt and internal tube. Screw the
slide head assembly into the external tube assembly and
hard tighten.
SERVICE
20. Install the hook (34) and secure with two capscrews
(31) and washers (30).
21. Lubricate the sliding surfaces of the knife blade (35),
hook and slide head with grease.
22. Install the knife blade between the hook and slide head
as shown in the parts drawing.
23. Install the knife bolt, washer and nut and tighten the
slotted nut only until there is no slack space between the
hook, knife blade and slide head (snug but not too tight
- knife blade should not wobble). You should be able to
rotate the knife blade by hand. Install the roll pin.
24. Install the clevis pin (29) and cotter pin (36).
FINAL ADJUSTMENTS
25. Make sure the clevis pin (40) is not installed, the lock
nut (27) is loose, and the piston is at its full extension (up
against the end of the tube coupling).
26. Push on the link bar until the knife blade is in the full
open position and the link bar is over the slide head and
contacting the hook. See fi gure 3. While maintaining the
knife blade in this position, rotate the external tube assem-
bly in or out until the hole in the slide link bolt is aligned with
the hole in the link bar. Continue to adjust the rotation of
the external tube until a gap of .100 or less exists between
the slide head and the hook and the hook is in line with the
trigger guard. Install the clevis pin (40) and cotter pin (36).
Hard Tighten the lock nut (27) against the external tube
assembly.
17
.000 to .100 gap
Figure 3.
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