256 Pneudraulic Installation Tool (HK1015)
7
8. Unscrew Check Valve Plug from side of head. Remove
Check Valve Spring, Guide, and Ball. A small magnet is
helpful.
9. If Check Valve Seat (Figure 10) is damaged, contact
your HUCK representative. If Relief Valve Seat is
damaged, it can be removed as described in step 10.
NOTE:
If seats are removed, they may not be reused;
they must be replaced.
10.
R
elief
V
alVe
S
eat
a
SSembly
R
emoVal
Note:
All parts in
check valve hole must be removed before Plug “A”
can be removed. (Figs. 1 & 10) Unscrew Screw “B”.
Insert a #10 screw in the thread of Plug “A”, and pull
to remove. Using a small drift and hammer, from rear
side of head, drive Relief Valve Seat Assy (Fig. 10) out
toward the front of the head.
11. Pintail Deflector can be pulled off barbed end at rear
of Hydraulic Pull Piston.
12. Unscrew Cylinder Cap from Cylinder/Head using a
1-3/4” open-end wrench.
13. (Fig. 2) Place Spacer on Hydraulic Pull Piston, and
screw Assembly/Disassembly Bullet onto piston. Tap
or press piston assembly out of head.
This will push
out front and rear gland assemblies and wiper and
wiper housing.
14.(Fig. 11) Remove Throttle Arm Screw; then remove
Throttle Arm. Pull Throttle Valve out of cylinder, and
remove Spring.
15.(Fig. 10) With a small punch and hammer, drive Trigger
Pin from the Handle. Remove Cable Pin. Remove ball
end of Cable from Throttle Arm (Fig. 11), and pull
cable out of handle.
16. Remove Reservoir Fill Plug from handle. (Fig. 10)
17. (Fig. 3) Hold tool inverted in vice. Unscrew 3 Cap
Screws with 5/32 hex key.
18. Remove Muffler End Cap, Bottom Exhaust Gasket,
Muffler and O-ring.
19. Remove Retaining Ring from Cylinder Assembly.
Tap
Cylinder Head down into Cylinder Assembly for
easier removal of Retaining Ring.
20. Screw Cap Screws into Cylinder Head, and carefully
pry under screws to remove Cylinder Head. (Figure 3)
21. Push Air Piston all the way into cylinder and lay
tool on its side. Hold Self-locking Nut with a 9/16
socket and extension and, with 7/64 hex key, unscrew
Intensifier Piston Screw.
22. Turn cylinder and handle upside down and secure in a
vise.
23. Grip Self-locking Nut under Air Piston with pliers and
pull piston and rod assembly from handle and cylinder
assembly.
24. With a 1 3/8 socket and extension, remove Main
Gland Assembly. Handle and cylinder will now
separate.
25. To remove Polyseal from Gland Assembly, remove the
Gland Assembly Retaining Ring and Spacer first.
26. Using a soft drift, push Intensifier Piston out of handle.
27. To service handle sleeve and handle, use a blunt-
tipped punch to gently tap sleeve from top of handle
through the bottom. Inspect sleeve for damage or
wear, and replace if necessary. Service O-ring inside
handle bore.
Front Gland
Assembly
close-up
NOTE: Spacer must only be used for disassembly procedure
as it assists in pushing out Front Gland Assembly.
Note orientation
of polyseal
123111-1
Assembly
Bullet
123112-1
Spacer
HUCK
Figure 2
Muffler
End Cap
Bottom
Exhaust
Gasket
Muffler
O-Ring
Retaining
Ring
Cap Screws
Use the screws
to pry out the
cylinder head.
Cylinder
Head
Assembly
Press air
piston
and piston
rod fully into
the air
Self-locking
Nut
Main Gland
Assembly
Intensifier Piston
Assembly
(Must be
unscrewed from
handle-side of
piston rod.)
Piston Rod
Air Piston
Assembly
Handle Sleeve
Handle O-ring
Figure 3
Disassembly Procedure
continued
