Truck loading point — spillage, dust and uneven loads
Symptom
Concrete spills when loading trucks, dust escapes at the loading point, or some truck loads are short and others long.
Likely causes
- Rubber boot torn, hardened or too short, or the truck badly positioned.
- Dust curtains torn, or the truck-loading dust collector blinded.
- Concrete build-up in the chute that breaks off into the next truck.
- Positioning lights, mirrors or sensors dirty or broken.
Most likely and cheapest to check first.
Checks
- End of every shift - chute, boot and floor washed.
- Weekly - rubber boot and curtains, positioning aids, drainage and settling pit.
- Monthly - chute liner wear; pivots and cylinders of moving chutes.
Fix
- Replace the boot and curtain strips; repair the positioning aids.
- Service the dust collector (Book 11).
- Wash the chute at every break, not only at the end of the shift.
- Replace worn chute liners.
Parts you may need
Build-up in the chute is a weighing problem too
Material that sticks in the chute falls into the next truck, so some loads are short and others long. Washing the chute at every break keeps every load right.
DANGERDrivers never climb on the truck or stand under the chute while loading. Cleaning inside the discharge chute only under a written safe system of work, with the mixer locked out.
⚠ Every check inside a machine starts with full lockout. Safety disclaimer