The maintenance of a concrete pumping truck (also known as a concrete pump truck or mixer pump truck) directly affects the equipment's lifespan, construction safety, and efficiency.
Daily Maintenance (per shift/day)
Pre-operation Inspection
Check the hydraulic oil level (should be above 3/4 of the gauge) and oil quality (should be clear and pale yellow, without emulsification or turbidity).
Check the water tank level, piston seal, and for any mortar seepage into the water tank.
Check the clearance of the S-tube, spectacle plate, and cutting ring (maximum not exceeding 2mm), and adjust if necessary.
Confirm that the lubrication system is working properly, with grease overflowing from all grease fittings.
Check the boom and outrigger components for deformation or cracks, and ensure the connecting bolts are tight.
Check tire pressure, lights, braking system, and chassis condition.
In-operation Monitoring
Monitor the hydraulic oil temperature (not exceeding 80℃), engine coolant temperature, oil pressure, and other instrument readings. Listen for any abnormal noises or vibrations, and observe whether the pumping pressure is stable.
Maintain the concrete level in the hopper above the mixing shaft to prevent air intake and pipe blockage.
Post-operation cleaning and maintenance
Thoroughly clean the hopper, S-tube, delivery cylinder, and boom to remove concrete residue.
Pump clean water or grease to clean the pipes and lubricate critical parts.
Retract the outriggers, reset the boom, and park the vehicle in a dry, well-ventilated, and safe location.
Regular maintenance (according to usage cycle)
- Every 50 working hours or 10 days: Drain the sediment from the bottom of the hydraulic oil tank.
Check the cleanliness of the lubrication system, electrical components, and cooler.
- Every 500 working hours or 12 months (refer to mainstream manufacturer recommendations): Replace the hydraulic oil and all filters (suction, return, and pilot filters).
Replace the engine oil, oil filter, and fuel filter. Inspect or replace easily worn parts such as pistons, seals, cutting rings, and spectacle plates.
Retighten the torque of critical connecting bolts on the boom and chassis.
Inspect the slewing bearing clearance and lubricate the slewing bearing.
- Annual Overhaul
Conduct a comprehensive inspection of engine performance, hydraulic system leaks, and structural component fatigue damage.
Calibrate the electrical control system and safety devices (such as emergency stop buttons and limit switches).
