Maintenance Guide for Model 730 (3T3 Series): Accurately Control Cycles to Extend Equipment "Lifespan"

Model 730 (3T3 Series) is a core engineering equipment—its stability directly impacts construction efficiency and profits. Scientific maintenance is key to its long-term reliable operation. This article compiles precise maintenance tips for this model to help you maintain equipment efficiently.

Newcomers may ask: Is maintenance really that important? Absolutely. Neglecting it leads to frequent failures, skyrocketing repair costs, and even construction delays. Regular maintenance, however, reduces wear, lowers failure risks, and extends service life. Next, let’s break down key items by maintenance cycles.

Short-Cycle Maintenance: Lay a Solid Foundation and Prevent Minor Issues from Escalating 

The short maintenance cycle mainly focuses on operation checkpoints every few thousand hours. As the "basic practice" of daily equipment maintenance, it must be implemented on schedule.

4000 Hours: Replace 178L HYDO TO10 Oil. As equipment "blood", regular oil replacement cuts internal engine wear and ensures stable power output.

5000 Hours: Replace 378-3178 Diesel Exhaust Fluid (DEF) filter. Its clogging impairs exhaust purification efficiency; timely replacement avoids environmental non-compliance and component damage risks.

6000 Hours: Replace 83L ELC coolant, add 73oz (2.15L) extender, and replace 2 x 248-5513 thermostats & 341-1429 gaskets. Prevents issues like abnormal water temperature and engine overheating.

Mid-Cycle Maintenance: Deepen Maintenance to Avoid Hidden Risks

The mid-cycle maintenance targets equipment operation checkpoints at 10,000 hours and above. By this stage, some core components of the equipment have entered a critical wear period, requiring enhanced maintenance efforts.

10,000 Hours: Replace 2 pieces of 506-5818 DEF Manifold Filters. These filters affect DEF injection accuracy, and replacement ensures fuel economy and power performance.

12,000 Hours: Replace 83.2 liters of ELC coolant and add 73 ounces of extender. Regular maintenance prevents coolant aging and enhances the system's corrosion resistance.

Long-Cycle Maintenance: Prioritize Safety for Comprehensive Protection

Every 3 Years: Replace 566-5659 cab seat belt. Its protective performance declines with material aging—replacing it per service life is key to safety.

Maintenance Tips: Don’t Overlook These Details!

1. Choose Genuine Spare Parts: Use genuine spare parts to avoid equipment damage caused by incompatibility.
2. Establish Maintenance Records: Document information such as date, operating hours, and spare part models for easy traceability and summary.
3. Flexibly Adjust Cycles: Shorten maintenance intervals in harsh environments such as high temperatures and heavy dust.

There is no shortcut to maintenance for the Model 730 (3T3 Series). Accurately controlling maintenance cycles and implementing maintenance items are the core to ensuring the equipment operates stably. Feel free to share your maintenance experience in the comment section!