DeZurik POWERRAC R3 Manual de instalación y funcionamiento - Página 8

Navegue en línea o descargue pdf Manual de instalación y funcionamiento para Controlador DeZurik POWERRAC R3. DeZurik POWERRAC R3 15 páginas. Cylinder actuator

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DeZURIK
R3 PowerRac
Actuator Disassembly
1.
Remove the tie rod nuts (B56) and washers (B55) from the tie rods (B54), and remove the
cylinder cap (B50).
2.
Remove the piston rod (B42)— with piston (B46) and cylinder tube (B49)— from the cylinder
head on the housing (B1).
3.
Remove the piston rod (B42) and piston (B46) from the cylinder Tube (B49).
4.
Remove the piston nut (B47), the piston (B46), and the O-ring (B43) from the piston rod (B42).
5.
Remove the piston seal (B44) and the O-ring (B45) from the piston (B46).
6.
Remove the piston rod seal (B40) from the actuator housing (B1).
7.
Remove the two cylinder tube O-rings (B48) from the cylinder head on the housing (B1) and
from the cylinder cap (B50).
8.
Remove the tie rods (B54) from the actuator housing (B1).

Actuator Reassembly

Steps 1 through 7 apply to reassembly of the cylinder components. Clean and inspect all parts before
reassembly. Worn parts, especially sealing components such as O-rings and other seals should be
replaced. Lubricate the cylinder O-rings, other seals, and cylinder tube walls with a paint-like coating
using one of these lubricants:
- Dow Corning Molykote No. 44 (recommended)
- Shell Retinax AM (alternate)
- Shell Lithall MDS (alternate)
Refer to Figures 1 and 2 for component identification.
1.
With the O-ring groove toward the piston rod, place the O-ring (B43), the piston (B46), and the
nut (B47) on the piston rod (B42). Tighten the nut to 120 ± 10 foot pounds (163 ± 14 Nm).
2.
Place the O-ring (B45) in the smaller groove of the piston (B46). Place the piston seal (B44) in
the larger groove of the piston as far around the circumference as possible without stretching
the seal. Angle the remaining.
3.
Place one cylinder tube O-ring (B48) in the groove in the cylinder head on the housing (B1),
and place the other O-ring in the groove in the cylinder cap (B50).
4.
Place the 3-piece piston rod seal (B40) in the cylinder head of the housing (B1). Place the
rubber seal in position first, and then place a wiper ring in position on each side of the seal.
5.
Place the cylinder tube (B49) over the piston (B46) at about a 45° angle. Carefully square
the piston into alignment with the cylinder tube, and push the cylinder tube and piston rod into
position on the cylinder head of the housing (B1). Use care to prevent damage to the seals.
Push the piston (B46) into the cylinder so that the piston is against the cylinder head.
6.
Apply Loctite Primer N and Loctite Stud Lock to the shorter threads on each of the tie rods
(B54), and turn each stud as far as it will go into the housing (B1).
7.
Align the holes in the cylinder cap (B50) with the tie rods (B54) and insert the cylinder cap into
the cylinder tube (B49). Place the tie rod nuts (B56) and washers (B55) on the tie rods.
Tighten the nuts to 16 ± 2 foot pounds (22 ± 3 Nm).
D10359
Cylinder Actuator
TM
(Continued)
Page 8
August 2016