As a vacuum truck operator, it’s useful to know some basic repair methods for quick fixes during emergencies.
1. Vacuum Gauge Reading Too Low or No Reading
- Cause 1: Vacuum pump speed too low
Solution: Increase engine throttle. - Cause 2: Vacuum gauge tube is blocked
Solution: Clear the blockage. - Cause 3: Vacuum gauge is damaged
Solution: Replace the vacuum gauge. - Cause 4: Four-way ball valve not fully open
Solution: Replace the rotary vane.
2. Vacuum Truck Manhole Cover Leakage
- Cause 1: Left-hand screw not fully tightened
Solution: Tighten the left-hand screw. - Cause 2: Sealing gasket damaged or ineffective
Solution: Replace the sealing gasket. - Cause 3: Pull rod too long
Solution: Adjust the length of the pull rod.
3. Vacuum Truck Power Take-Off (PTO) Abnormal Noise and High Temperature
- Cause 1: Parts are worn out
Solution: Disassemble and inspect the PTO, clean it, and replace worn parts. - Cause 2: Lubricating oil contains impurities or is insufficient
Solution: Replace the lubricating oil or refill it as needed.
4. Vacuum Pump Abnormal Noise and High Temperature
- Cause 1: Foreign objects or debris entered the pump chamber
Solution: Disassemble, clean the vacuum pump, and replace worn parts. - Cause 2: Wear on the wheel hub
Solution: Replace the wheel hub. - Cause 3: Insufficient or contaminated lubricating oil
Solution: Add or replace the lubricating oil promptly.
5. Vacuum Truck Oil Tank Leakage
- Cause 1: Loose connecting screws
Solution: Tighten the bolts. - Cause 2: Damaged sealing gasket
Solution: Replace the sealing gasket. - Cause 3: Excessive amount of lubricating oil
Solution: Ensure the oil level is in the middle of the tank.
By following these steps, you can quickly troubleshoot and resolve common vacuum truck issues, ensuring continued operation and reducing downtime.
