Periodic maintenance schedule – Marshalltown Truss Screed User Manual
Page 10
10
OPERATIONS
SECTION 1
Always make sure that the drive shaft is aligned properly.
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When connecting drive shafts, assemble with all the weights on each section facing the bull float blade. If weights are
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mismatched, the screed will not vibrate properly. Match the keyways on the drive shafts and connectors.
Do not overspeed, engine RPM must not exceed 3600 RPM. Shaft speed will remain within the designed limitations if the
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engine maximums are adhered to.
DO NOT crown or invert without universal joints or flex couplers on the shaft connectors.
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Maintain engine in accordance with the manufacturer’s instructions.
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Use Loctite anti-seize MIL A 907D to lubricate the top pipe coupler threads before assembly.
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Grease screed bearings at 40 hr. operating intervals. Use ONE stroke of a hand grease gun (No More). Use Shell Alvo-
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nia #21, Texaco L-15, or Chevron SR1. Clean fittings before greasing. For low temperatures, use Dow Molykote BR-2.
DO NOT OVER GREASE!
Oil winch bushings at 10 hr. operation intervals. Use light lubricating oil.
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CAUTION! Change worn or frayed cables – cables under tension may snap and cause severe injury. Use proper meth-
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ods illustrated in this manual to properly attach cables. Always connect cables properly – wrap cable under last form pin
then connect cable hook to the next form pin towards the screed.
DO NOT hook cables to a stake driven into the ground, the stake can tilt under tension and snap back and cause severe
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injury.
For cold weather operations, use cold weather bearing lubricant that operates from ~-22° F - ~350° F.
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CAUTION! For screeds over 65 ft. in length, consult MARSHALLTOWN.
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• CAUTION! When installing pillow block bearings, be sure that the bottom flat surface does not have nicks or deep marks.
This can cause the bearing to ride off of the mounted surface; when vibration occurs this small deformation can wear off
quickly, allowing the bearing to loosen. With the bearing loose on its mounting, failure can occur.
PERIODIC MAINTENANCE SCHEDULE