
Page 11
PROTECTOR® IV Top of Rail Installation, Operation & Maintenance Manual
Install the MC-4TR® wiping bars as follows:
1.
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where rail is in good condition.
2.
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3. Ensure bars mounted on the same rail are located at a distance of 56 ½” (143 cm) between centers.
Note: Based on a 36” (91 cm) wheel diameter, the 56 ½” (143 cm) spacing allows bars to distribute material
uniformly over opposing sections of each wheel’s circumference. If track conditions do not permit a 56 ½” (143
cm) distance to be respected, install bars closer together but maintain at least one bar length in between.
4. Ensure inlet elbows clear rail hardware. On smaller rail sizes, it is best to attach the wiping bar supply hose
(and adapter where necessary) before assembling to rail. The piping adapter is used to gain additional
clearance with track hardware.
5. Loosely assemble wiping bars to mounting clamps.
6. Clean dirt and scale from rail in appropriate areas.
7. With a pick and ballast fork, remove ballast from selected cribs for installation of rail clamps.
8. Lay wiping bar assemblies adjacent to selected mounting locations.
9. Ensure mounting clamps are square to rail and fasten them to the base of rail. As the “J” bolt nuts are being
tightened using a hammer, occasionally tap clamp blocks driving the “V” slot on to the rail base. Torque
mounting bolts to approximately 200-250 ft-lbs (340 N-m).
10. When clamps are secured tighten the safety nuts.
11. Position wiping bar assemblies on top of rail clamp blocks and against rail.
12. Adjust the wiping bar height as follows:
a) Mount the TOR bar such that the tip of the seal is not
higher than the top of the railhead (shown in Figure 3 MC-
4TR Wiping Bar Installation). A simple level can be used to
help establish this position.
DO NOT STORE EXTRA SPACERS UNDER THE HEAD OF
MOUNTING BOLTS.
b) Remove or add spacers between TOR clamps and wiping
bar mounting feet.
c) Adjust blade height until the inner (thin) blade is just at
top of the side of railhead. Store excess spacers in clean
hands section of the tank.
Note: With newer rail, or where the radius has been ground on the top of the railhead, the curvature of the
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the required lower bar mounting draws the seal end away from the contact patch.
Figure 3: MC-4TR Wiping Bar Installation