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Service Instructions
133893 Rev. C
Table 4�
Housing
Model
GTD01
GTD2
GTD3
GTD4
GTD5
3.4.25 Lubricate stop screw (7-180) and install into the outer end cap (7-80).
NOTE:
The stop screw is installed from the outboard side of the outer end cap (7-80).
3.4.26 Install o-ring seal (8-100) onto the out board side of the stop screw (7-180).
3.4.27 Install jam nut (7-190) onto the out board side of the stop screw (7-180).
3.4.28 Adjust stop screw (7-180) back to settings recorded earlier in Section 2 at step
3.4.29 Tighten jam nut (7-190) securely.
3.4.30 If removed apply thread sealant to two pipe plugs (7-210) and install into the ports
3.4.31 For installation of the GTO oil cylinder onto Drive Module (housing) refer to
3�5
Actuator Testing
3.5.1
3.5.2
NOTE:
If excessive leakage across the piston remains, the actuator must be disassembled and the
cause of leakage must be determined and corrected.
3.5.3
3.5.4
3.5.5
Actuator Reassembly
Tie Bar Nuts (7-90) Torque Table
TORQUE (±5%)
FT-lb
70
95
70
95
125
169
190
258
330
447
2.3.2.
of outer end cap (7-10) and inner end cap (7-80).
Section 4 step 4.2 for GTO oil cylinder installation instructions.
Leakage Test - All sources of leakage to atmosphere and across pistons are to be
checked, using pneumatic pressure.
Cycle the actuator five time at 10 % percent of the operating pressure, as listed
on the actuator name tag under max. pressure or use a minimum 80 to 100 psig
pressure.
Apply operating pressure as listed in step 3.5.2 to one side of the piston and allow
the actuator to stabilize.
Repeat the above procedure for the opposite side of the piston.
If an actuator was disassembled and repaired, the above leakage test must be
performed again.
Section 3: Actuator Reassembly
Housing
Model
N-m
GTD7
GTD8
GTD10
GTD13
January 2013
TORQUE (±5%)
FT-lb
N-m
466
632
680
922
875
1186
1367
1854
18
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