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Section 10: Assembly
July 2019
(Models 1480-2380)
A.
B.
C.
D.
E.
F.
G.
H.
(Cylinder and Rod Cover Assembly-All Models)
Assemble bolt (33) on end of piston rod before installing rod cover when rod cover
is required.
A.
B.
C.
18
Install yoke seals (42) using o-ring lube and yoke bearings (5) using WD-40 into the
cover (18) and housing (1).
Inspect the housing upper and lower vent passages and clear any blockage. Install
new vent valves (22).
Lubricate the bearing surfaces of the yoke (2) with WD-40 and install the yoke
(2) in the housing (1). Install the yoke with the marking and the pointer drive bar
visible through the cover hole.
Install the piston rod bushings (7) and the piston rod (4).
Install the lower retaining ring (11) on the thrust pin (9) and lubricate the pin with
Whitmore grease. Lubricate the slide blocks (10) with Whitmore grease inside and
out and position them in the yoke (2) slots. Insert the thrust pin (9) through the
thrust pin access hole (Figure 5) and slide it through the lower slide block (10),
piston rod (4), and upper slide block (10). Install the upper retaining ring (11) on
the thrust pin (9).
Place joint compound on the sealing surface of the cover (18), install the cover on
the housing (1), and torque the cover bolts (19) to 30 ft-lb. Install the short cover
bolts (19) into the jack bolt holes of the cover (18).
Insert a bead of Dow Corning 732 silicone sealant on the cover (18) sealing surface
and install the cover (18) on the housing (1) torquing the bolts to 15 in-lb.
Install the cap seal (12a) and cap (15).
Install rod cover (28) if applicable. Actuators utilizing one piston only require a rod
cover. Bolt rod cover and gasket in place with socket head screws (39).
Use "Locktite 222 Thread Locker."
For models 1485 – 3072 install the piston rod spacer plate.
Assemble piston rod o-ring (29) on piston rod. Lubricate o-ring with "Dow Corning
#112" lubricant.
Installation, Operation and Maintenance Manual
MAN-02-01-39-0704-EN Rev. 0
Assembly
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