6 of
10
shoe approximately 1/4 inch from the bottom of the housing bore. Double vane actuators require two
shoes and only one shoe should be placed in the actuator at a time.
L. Install the second shoe (if required) . Remember that the rounded corner of the shoe (6) with the rounded
corner of the ID of the housing (1). Remember to leave the shoe about 1/4 inch from the bottom.
M. Push the shaft (5) and shoe(s) (6) down together with the shaft bottoming first. CAUTION: If the shoe
bottoms first, the sharp edges of the shaft will pinch the corners of the shoe seal and cause unusual high
internal leakage.
N. Press the corners of the shoe and vane seals below the surface of the top of the housing.
O. Remove the shim stock, or assembly tools.
P. Install the head (2).
Q. Pull down evenly and secure with the head screws (22).
R. Torque to the value shown on chart on Table 2.
Factory built Rotac
®
actuators are then tested for internal by-pass leakage and breakaway pressure.
See chart on Table 3.
FIGURE 3. – Shoe and Shaft Installation
Note:
Install shoe into body
with shaft in the
approximate location
as shown, Position
#1 (adjacent to the
shoe).
Caution:
DO NOT ALLOW
VANE SEALS TO
CROSS SHOE
DOWELS HOLES
OR PORT HOLES.
After shoe and shaft
are installed, rotate
shaft to Position #2
(Vane Seal
approximately
opposite the shoe).
Table 1. Assembly Tool Kits for 26R Models
Includes the Shoe Seal Protector, the Vane Seal Protector and the Shaft Seal Proctor.
Assembly numbers available on request.
Vane radius
