10
2015 series Pneudraulic Installation Tools
(HK958)
d
iSaSSeMbly
This procedure is for complete disassembly of the tool.
Disassemble only those components necessary to
replace damaged O-rings, Quad-rings, Back-up rings,
and worn or damaged components. For component
identification, see Figures 4–7
.
1. Disconnect the tool from the air source.
2. Remove air hose from cylinder.
3. Unscrew the retaining nut and remove the nose
assembly. (Follow the instructions on the
Nose
Assembly Data Sheet
.)
4. Unscrew the bleed plug, including O-ring. Drain
the fluid into a container. The tool can be cycled to
clear more completely. Discard the fluid.
5.
Model
2015
: Pull the pintail deflector off end cap.
6. Remove the throttle arm pivot screw and lift out the
throttle arm. Disconnect the ball end of the cable
assembly from the throttle arm. Remove the spring
from the
throttle valve. (Figure 7)
7. Secure the tool upside-down in a soft-jaw vise; use
a 1/8” hex key to remove three button-head screws
from the muffler end cap
.
8. Remove the muffler end cap and bottom exhaust
gasket. Remove the muffler from the end cap. Tap
the cylinder head down into the cylinder assembly
and remove the retaining ring.
9. Screw the button-head screws into the cylinder
head, and carefully pry on them to remove the
cylinder head. (Figure 7)
10. Use pliers to grip the self-locking nut and pull out
the air piston and rod assembly from the handle and
cylinder assemblies.
NOTE
:
Do NOT disassemble the air piston and
rod assembly. If the locknut loosens, apply
Loctite
®
271-05; tighten to 25–30 ft.-lbs.
11.
Remove bumper from gland sssembly. Unscrew the
gland with a 1-3/8” socket wrench and extension
.
12. Remove the retaining ring from the gland. Pull out
the spacer and Polyseal.
13.
Model
2013V
: (Figure 5) Press the ring on the tube
connector downward to release the tube.
14.
Lift cylinder assembly from the handle assembly
.
15.
Turn over the handle assembly and drain fluid into
container. Discard the fluid
.
16. Pull the throttle valve out of the cylinder assembly.
NOTE
:
The throttle valve bushings do not
typically require service.
17.
Press out lower and upper bushings. Use square-
ended brass rods at least six inches in length. With
a proper diameter rod, press out lower bushing, and
then
press out upper bushing using a larger rod.
18. Secure the handle in a vise, and continue with the
“gland assembly removal” procedure
.
Model
2015
: (Figure 4) Remove the end cap with
a 15/16” open-end wrench. Remove the spring,
washer, and wiper seal.
REMOVING THE PISTON AND FRONT GLAND
ASSEMBLIES
(Figures 4 & 5)
a.
Thread Polyseal Insertion Tool (P/N
121694-202
)
into the handle/head.
Slide spacer (P/N
123112-3
)
onto the piston. Thread the
Piston Assembly Tool
(P/N
123111-4
) onto the piston.
b.
Use a brass drift to push out the piston from the
front. Allow clearance, with stand-off, as the piston
leaves the tool.
c.
Remove the Piston Assembly Tool, spacer, and
Polyseal Insertion Tool.
NOTE
:
Inspect the piston for wear, scoring, and
damage. Replace if necessary.
d.
Unscrew the adapter (P/N
125132
) with a
wrench, and inspect all seals and parts; replace if
necessary
. (Figure 4)
e. Remove the trigger cable assembly by driving out
the pin with a punch. Remove the trigger pin to
disconnect the cable from the trigger.
WARNING: Disconnect the air hose from
the tool before:
• Removing or attaching the nose assembly
• Performing maintenance on the tool or
nose assembly
• Replacing tool components
If the tool is connected to a pressurized
cylinder, it could activate; serious injury
could result.
CAUTION: Always use a soft-jaw vise to
avoid damaging the tool.
CAUTION: Do NOT scratch, nick, or ding
piston rod. This will cause permanent
hydraulic leakage.
CAUTION: The bushings in the cylinder
must be replaced only if new throttle valve
seals cannot correct an air leak.
Send the unit to an authorized repair
center to have the bushings replaced.
CAUTION: If piston and gland assembly
seals must be reused: during disassembly,
install the Polyseal Insertion Tool (P/N
121694-202) in the rear of the handle/
head
to prevent damaging the seals.
