MIO-R45XRFR4836 Rev E
G&B Specialties Inc. 535 West 3
rd
Street, Berwick, PA, USA Tel: (570) 752-5901 Fax: (570) 752-6397
US Field Service: 570-441-6988; CAN Field Service 570-854-0482; www.rafna.com
-22-
R
AILGEAR
L
OCK
S
YSTEM
A
DJUSTMENT
P
ROCEDURE
The rear lock-up adjustment procedure is the same for all rear lock-up types.
The rear railgear lock system provides a mechanical locking mechanism to hold the railgear
axle in the road position. For the system to function properly, the contact surface of the
angle plate on the axle and the top surface of the locking pins must have a contact length of
approximately 3/4” to 7/8” as shown by Figure 7. If these criteria are not met, the following
procedure can be followed:
1.
Raise the railgear to the road position. Support the railgear axle and the lock-up system.
2.
Remove lock-up cover (if equipped).
3.
Loosen the four 1/2” fasteners that secure the lock-up support to the lock-up frame.
4.
Ensure the lock-up support is adjusted all the way down to the bottom of the adjustment
slots. Torque the four 1/2” fasteners to 100 ft-lbs dry. Do not over torque.
5.
Remove the four inside 3/8” fasteners that secure the lock-up plate to the lock-up
support.
6.
Lower the rear railgear until the bottom surface angle plate and the top surface of the
lock pins are in contact with each other. The angle plate and lock pins should be
parallel to each other upon contact.
7.
If the angle plate and lock pins are not parallel to each other, the lock up support can be
rotated and/or raised/lowered in its mounting slots to adjust the contact angle.
8.
Loosen the two outside 3/8” fasteners that secure the lock-up plate to the lock-up
support.
9.
Adjust the lock-up plate in or out accordingly so that the contact surface of the angle
plate and the top surface of the lock pins have a contact length of approximately 3/4” to
7/8”.
10.
The holes in the lock-up plate and the lock-up support allow for horizontal adjustment in
1/8” increments. Align the closest set of holes that will allow a contact length of
approximately 3/4” to 7/8”.
11.
Re-install the four inside 3/8” fasteners that secure the lock-up plate to the lock-up
support, that were removed in step #5 above. Tighten but do not torque at this time.
12.
Retract the lock pins and lower the railgear. Raise the railgear and ensure that the lock
system has been properly adjusted and functioning properly and that there are no
interferences between lock-up and railgear axle.
13.
With the railgear fully retracted to the road position and the lock-up adjusted as outlined
in the previous steps, there should be approximately 3/4” clearance between the angle
plate and lock pins as shown in Figure 9.
