J&M 275ST User Manual
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1.
Slide the weigh bar into the scale mount. Making sure that the Weigh bar sticker is facing up (Figure 6.1).
2.
Insert two 3/8”-16 X 3 1/2” Grade 5 Zinc Hex Bolt (#1) into scale mount and tighten using 3/8”-16 Centerlock Hex Nut
(#2) (Figure 6.1).
3.
Insert 4 Spacer Blocks in between the Shell/Leg Weldment and the Chassis Frame. Be sure the 4 Spacer Blocks are
identical in width and fit snug between the Shell/Leg Weldment and the Chassis Frame (Figure 6.2).
4.
Remove the 4 bolts from each of the Dummy Scale Mounts and remove it from the unit.
WARNING: With the 4 bolts removed from each of the Dummy Scale Mounts. The Chassis and Shell are not attached and
can slide apart.
5.
Lift the shell approximately 2-3”. This will allow enough clearance to slide the weigh bars into the Shell/Leg
Weldment Spools. (Figure 6.2).
6.
Slide Weigh Bars into the Shell/Leg Weldment Spools and lower the Shell/Leg Weldment down so the Weigh Bar Mounts
set on the Scale Mounting Plates.
7.
Use a punch to align the Weigh Bar Mount holes with the Scale Mounting Plate holes.
8.
Insert 1/2”-13 X 1 3/4” Grade 5 Hex Head Bolt (#3) with two 1/2” Zinc USS Washers (#4) and 1/2”-13 Grade 5 Zinc
Centerlock Hex Nut (#5) (Figure 6.3)
IMPORTANT: Be careful not to pinch wires between the Speed Tender chassis and the Scale Mounting Plates.
9.
Torque each bolt down to 85 ft-lbs on all 4 Scale Mounting plates (Figure 6.3).
6.0 Aftermarket Installation Instructions
6.1 Scales Installation
Note: For Scale parts see Section 5.3
1
2
Figure 6.1
Figure 6.2
Figure 6.3
Spacer Block
Shell/Leg
Weldment Spools
4
5
3