2012 series Tooling
(HK969)
Alcoa Fastening Systems
12
See
MAINTENANCE: GOOD SERVICE PRACTICE.
Clean all components with mineral spirits, and
inspect for wear or damage. Replace as necessary.
Use seals, wipers and back-up rings supplied in
SERVICE KIT, 2012KIT
and
2012VKIT
-see NOTES.
Smear LUBRIPLATE 130AA or PARKER-O-LUBE on
seals.
Figures 3 through 12.
1.
If Bushings have been removed from cylin-
der:
Use an arbor press and apply LOCTITE #609,
(503377) on bushings before being pressed into
cylinder. Place chamfered end of Upper Bushing
In top of Cylinder. Carefully press bushing
squarely into cylinder. Repeat procedure for
Lower Bushing.
2.
Assemble Gland Assembly after replacing
Polyseal, Spacer and Retaining Ring.
Figure 8
.
NOTE: Cup of POLYSEAL must face toward
top of tool when installed in Gland.
3.
Install Adapter into cylinder handle/head.
4.
Thread Polyseal insertion/removal tool, 121694-
202 into handle/head.
5.
Thread Piston Assembly Tool 123111-4, onto
Piston Assembly.
6.
Push front gland assembly onto piston, as
shown.
7.
Slide wiper onto piston, as shown.
8.
Push assembled components in gently from rear
of tool using a press or soft mallet and wood or
brass drift.
9.
Remove Piston Assembly Tool and Polyseal
Insertion/removal Tool.
10.
For 2012:
Assemble Spring, Spacer, Rear Wiper
Seal and End Cap into handle/head.
For 2012B or 2012V:
Reverse the disassembly
instructions in the Special Disassembly
Instructions for 2012B and 2012V in the
Disassembly section.
11. Position Cable Assembly in Trigger slot and push
Dowel Pin through holes in trigger and cable
assembly. Position assembled trigger in handle
and drive Pin through holes in handle and trig-
ger.
12. Hold handle/head in vise with lower end pointing
up. Turn cylinder bottom up, and position on han-
dle by lining up cylinder pin with handle hole.
13. Apply Never-Seez or equivalent to threads of
Gland Assembly. Screw gland into head/handle.
Using a 1 3/8 socket wrench, tighten gland to
75-80 ft. lbs.
14. Push Bumper firmly over gland, slots must face
toward bottom of tool.
15. Lubricate piston rod. Press assembled air pis-
ton/piston rod into cylinder just enough to allow
installation of cylinder head.
16. Push Cylinder Head squarely into cylinder taking
care not to damage O-ring. Install Retaining
Ring. Align screw holes with muffler end cap.
17. Position Muffler in center of cylinder head.
Position Gasket on cylinder.
18. Carefully position Muffler End Cap on cylinder.
Be certain that muffler is properly positioned
in recess of muffler end cap.
19. Muffler end cap is secured with three Button
Head Screws. Tighten with 1/8 hex key.
20. Place tool upright on level surface. Drop Spring
into throttle valve bore in cylinder. Push Throttle
Valve into cylinder.
21. Place ball end of Throttle Cable in end of Throttle
Arm.
22. Slide Throttle Arm into slot on Cylinder.
23. Install Pivot Screw in cylinder to retain Throttle
Arm.
24. Follow
F
ILLING
AND
B
LEEDING
P
ROCEDURE
of this
manual to fill tool.
25. Install Bleed Screw afte filling and bleeding pro-
cedure.
CAUTION: Always replace all seals, wipers
and back-up rings on/in disassembled
components. These parts wear from fric-
tion and deteriorate with age. Replacement
prevents potential leakage.
A
A
SSEMBLY
SSEMBLY