AnsaldoSTS 95 - Mast Mounting for Sidewalk Gate Mechanisms

General Maintenance and Troubleshooting
2-2 SM 6495, Rev. 7, December 2008
4. Thread 1-1/2” flexible conduit and 90° elbow coupling (X46700002) to gate mechanism and
junction box.
5. Install cable grip conduit for gate arm lights cable, included with gate mechanism.
6. Apply a light coating of grease to the main shaft ends. Install gate arm supports (hubs pre-
mounted) to keyed main output shaft (Taping the keys to the shaft may assist with installation of
the gate arm supports). Place washers and nut on the end of shaft and tighten.
7. Install conversion bracket assembly (J7051915806) to gate arm supports.
8. Install gate arm (rotate gate mechanism so that gate arm will extend parallel to roadway, so traffic
is not blocked during installation).
9. Install counterweights as follows:
a. Install stud plate assemblies (X46700001) on support arms.
b. Slide on the proper number and type of counterweights. Refer to the Counterweight Table
(Table 2-1).
c. Secure with the proper hardware.
The number of counterweights required depends on the type and length of the gate arm. The fiberglass
and aluminum arms are equal in weight, so they require the same counterweight arrangements. If
extension arms are not used for longer arms, additional weights must be used to compensate and obtain
a proper torque value.
10. Rotate the mechanism on the mast so the gate arm is positioned over the roadway before raising the
arm when the highway is clear.
2.2.1. Mast Mounting for Sidewalk Gate Mechanisms
1. Erect mast with junction box.
2. Position mechanism approximately 42-3/4” above top of the foundation. (The exact height may
need to be adjusted slightly in order to meet the required height of the gate arm above the
sidewalk.)
3. Install T-bolts (X46705401), included with mechanism) in back of gate mechanism with threaded
portion toward the mast. Sit gate mechanism on top of support clamp. Fasten to mast with clamps
and supplied hardware.
4. Thread 1-1/2” flexible conduit and 90° elbow coupling (X46700002) to gate mechanism and
junction box.