INSTALLATION
MANUAL
MODEL 773 SERIES
REINFORCED CRASH ARM
B&B ARMR: A Division of B&B Roadway and Security Solutions
Page 21 of 38
0773-9001 Rev D
B&B ARMR reserves the right to change any information concerning product or specification without notice or obligation.
Figure 12 - Installed Arm
3.3.7.4.
Verify arm aligns with the receiver stanchion and there is no interference or
binding on the shaft bearings.
3.3.7.5.
IF
binding occurs, loosen the drive stanchion bearing bolts (4x per weldment)
and use the adjustment screws (2x per weldment) in the stanchion to adjust the
position of both bearings.
Align the arm such that it does not strike or touch the receiver stanchion when
in the closed position. The arm alignment should be centered as closely as
possible between the receiver stanchion weldments.
Snug adjustment screws.
There are two adjustment screws per bearing. Always adjust both
screws in unison. Tightening one adjustment screw against the other,
could result in damage to the bearing.
Verify alignment; snug bearing bolts
.
Hinge Pin must
install flush on
both sides of
stanchion
Drive
Stanchion
