Hydraulic System Maintenance for DALI-CLW Garbage Compactor Trucks
Manufacturer: DALI-CLW Special Purpose Vehicle Co., Ltd.
Release Date: June 26, 2023
Product Category: Garbage Compactor Trucks / Hydraulic System
As a professional manufacturer of special purpose vehicles, DALI-CLW designs and produces garbage compactor trucks with reliable hydraulic systems to ensure stable compaction performance, high efficiency, and long service life. Proper maintenance of the hydraulic system is essential for maintaining optimal working conditions and reducing operating costs.
Overview of DALI-CLW Garbage Compactor Truck Hydraulic System
The hydraulic system used in DALI-CLW garbage compactor trucks is a key functional system responsible for driving the compaction mechanism. It is engineered for high efficiency, stable pressure output, and smooth operation under continuous working conditions.
The hydraulic system mainly consists of:
- Hydraulic oil pump
- Control valve assembly
- Hydraulic hoses and pipelines
- Hydraulic cylinders
- Hydraulic oil tank with filters and breathers
The hydraulic pump is powered by the vehicle engine and generates hydraulic pressure. Hydraulic oil is transmitted through control valves and pipelines to the compaction cylinders. When the compaction system is activated, the hydraulic cylinders exert strong force to compress waste materials, significantly reducing waste volume and improving transportation efficiency.
DALI-CLW hydraulic systems are designed for high flow efficiency and minimal pressure loss, ensuring consistent performance during compaction cycles.
Routine Maintenance of the Hydraulic System
1. Hydraulic Oil Tank Maintenance
a. Oil Return Line Fine Filter
- First replacement after 50 operating hours
- Regular replacement every 250 operating hours
- Replace immediately if major hydraulic components fail
b. Oil Tank Breather
- Keep the breather clean, unobstructed, and correctly installed
- Replace every 6 months
- Shorten replacement intervals in dusty or harsh working environments
c. Hydraulic Oil Replacement
- First oil change after 150 operating hours
- Second oil change after 6 months
- Regular replacement every 12 months
Recommended hydraulic oil:
YWZ-80T hydraulic oil or equivalent standard hydraulic oil approved by DALI-CLW
d. Oil Outlet Strainer
- Clean during every oil change
- Replace when damaged or excessively contaminated
2. Hydraulic Cylinder Maintenance
a. Weekly Inspection
- Inspect hydraulic cylinders for oil leakage
- Check for abnormal operating noise
b. Piston Rod Inspection
- Inspect piston rod surfaces for scratches or damage
- Repair surface defects promptly to prevent seal damage and operational risks
Common Hydraulic System Failures and Troubleshooting
1. Oil Leakage at Hydraulic Cylinder Piston Rod
Possible Causes
- Worn or damaged sealing elements
- Scratches on piston rod surface
Solutions
- Inspect guide sleeve and replace sealing elements
- Replace damaged piston rod or related components
2. Slow Movement of Hydraulic Cylinders
Possible Causes
- Air trapped in the hydraulic system
- Insufficient hydraulic oil level
- Incorrect hydraulic oil viscosity
- Blocked inlet or outlet strainers
- Restricted hydraulic oil flow
- Leakage in suction pipeline
- Worn hydraulic pump or internal components
- Improper system adjustment
- Contaminated pressure valve
- System overload
- Improper hydraulic pipe connections
- PTO malfunction
- Low hydraulic oil temperature
- Insufficient engine speed
Solutions
- Bleed air from the hydraulic system
- Refill hydraulic oil and inspect for leaks
- Replace with recommended hydraulic oil
- Clean or replace filters and strainers
- Inspect and clean hydraulic pipelines
- Repair or replace worn components
- Adjust system settings according to DALI-CLW technical specifications
- Clean pressure valves
- Operate within rated load limits
- Correct hydraulic pipe connections
- Inspect PTO operation
- Warm hydraulic oil to normal operating temperature
- Adjust engine speed
3. Insufficient Compaction Force
Possible Causes
- Damaged piston seals
- Low system pressure caused by overflow valve malfunction
- Worn hydraulic pump
- Insufficient hydraulic oil
- Blocked oil filter
Solutions
- Replace piston sealing elements
- Adjust overflow valve pressure
- Repair or replace hydraulic pump
- Refill hydraulic oil
- Replace filter elements
4. Hydraulic Oil Pump Leakage
Possible Causes
- Damaged sealing rings
- Loose or improperly sealed pipe joints
Solutions
- Replace sealing rings
- Tighten joints or reseal with sealant
- Replace damaged connectors if required
5. Foaming or Air Bubbles in Hydraulic Oil
Possible Causes
- Low hydraulic oil level
- Water contamination
- Leakage in suction pipeline
- Kinked or crushed hydraulic hoses
- Incorrect hydraulic oil selection
- Worn pump shaft seals
Solutions
- Adjust oil level and inspect for leaks
- Replace contaminated hydraulic oil
- Tighten joints or replace suction pipes
- Replace damaged hoses
- Use DALI-CLW recommended hydraulic oil
- Clean or replace worn sealing components
6. Excessive Noise from Hydraulic Pump
Possible Causes
- Hydraulic oil viscosity too high
- Excessive pump speed
- Blocked suction pipeline
- Blocked oil tank breather
- Clogged primary oil filter
- Internal component seizure
- Air in hydraulic oil
- Low hydraulic oil level
- Pump wear
Solutions
- Use hydraulic oil with correct viscosity
- Adjust pump speed
- Clean or replace suction pipelines
- Clean oil tank breather
- Clean or replace filters
- Repair or replace damaged components
- Eliminate air from hydraulic system
- Adjust oil level
- Repair or replace hydraulic pump
7. Hydraulic Cylinder Oil Leakage
Possible Causes
- Cylinder body damage
- Damaged piston valve components
- Loose cylinder connections
- Damaged piston rod
Solutions
- Replace damaged cylinders and identify root causes
- Repair or replace piston valve components
- Tighten loose connections
- Replace piston rod if necessary
8. Hydraulic Oil Temperature Too High
Possible Causes
- Prolonged control valve operation
- Improper hydraulic oil selection
- Excessive engine speed
- Internal system leakage
Solutions
- Return control lever to neutral position when not in use
- Replace with appropriate hydraulic oil
- Adjust engine speed
- Inspect pumps, valves, and cylinders and repair internal leakage
About DALI-CLW
DALI-CLW Special Purpose Vehicle Co., Ltd. specializes in the design, manufacturing, and export of garbage compactor trucks and other sanitation vehicles. With strict quality control and mature hydraulic system design, DALI-CLW products are widely used by municipal sanitation departments and waste management companies worldwide.