Fairbanks 12-1492 - 12-1496 A.A.R. Combination Railroad Track/MTS - Manual (Page 30)

04/12 30 50538 Rev. 7
End Center
50538-15
Referring to the detail above, note that the "open" side of the assemblies at end sections face
the center of the scale; middle sections have assemblies installed with the "open" side facing
the end of the scale.
TIP: For Analog Instrumentation, measure the bridge resistance of each load cell, and pair
the closest matches for installation in each section.
Lower Assembly:
1: Ensure the base plate is clean and free from any dirt and debris. Place the support
assembly into position, correctly orienting it in the appropriate direction and approximately
centered on the base plate.
2: Apply grease and install the two 5/8-18 x 1¼” socket-set screws (headless) in the holes at
the bottom plate of the support assembly to serve as locating pins for the lower bearing plate.
3: Place the lower bearing plate in position with the two holes engaging the locating pins.
4: Place the lower button's threaded stud through the center hole of the bottom flexure. Apply
grease to the threads. Place the stainless steel spacer (4” diameter, 1/8” thick) over the stud
so that it rests on top of the flexure plate.
5: With the load cell supported on its side, place the lower button/flexure/spacer against the
base of the load cell with the center hole aligned. Then screw the lower button/flexure/spacer
into the cell until all threads are very snug. Turn the lower button with large pliers, being care-
ful not to bend or damage the lower flexure in any way.
6: Position the four spacers at the corners of the lower bearing plate concentric with the
tapped ½" holes.
7: Carefully lift the load cell assembly upright, and place it into the support assembly with the
load cell wiring junction facing the open side of the support assembly.
8: Apply grease and install four ½"-13 x 1½" screws and lock washers through the lower flex-
ure and pipe spacers, and turn them into the corner holes of the lower bearing plate.