212 Series Tooling Alcoa Fastening Systems
18
DISASSEMBLY (CONT.)
15.Screw 1/4-20 UNC screws into Piston (39).
Pull evenly on screws to remove assembled
Piston and Rod - - as an alternative, pull on
Lock Nut (42) with VISE-GRIP pliers.
CAUTION
Do not scratch, nick, or ding Piston Rod (41).
This will cause permanent hydraulic leakage.
16.CAUTION: DO NOT remove Gland (29) before
throttle arm pivot Shoulder Screw (23) is
removed. These parts will be damaged if this
removal sequence is not followed.
Remove bumper (38) from Gland (29).
Unscrew Gland (29) with 1 3/8 socket
wrench.
17.Lift Cylinder (24) from Handle/head (3). Turn
handle/head over, and drain hydraulic fluid into
container. Discard fluid.
Note: Do not attempt to remove Oil
Damper Valve (56 & 57) - - no service is
required on these parts
18.Remove Throttle Arm (22). Detach ball end of
Cable Assembly (21) from throttle arm. Drive
Slotted Pin (18) from Handle (3) and remove
Trigger (20) with attached Cable Assembly
(21) and Linkage Pin (19). Push out linkage
pin and remove cable assembly from trigger.
19.Pull Throttle Valve (52) out of Cylinder (24).
20.NOTE: Do not remove bushings unless air
leakage cannot be stopped by replacing all
three throttle valve 0-rings.
If bushing replacement is necessary, press out
Lower Bushing (59) and Upper Bushing (58).
Use square ended brass rods at least six
inches long. With proper size rod, press out
lower bushing first, press out upper bushing
using a larger diameter rod.
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