The Genie GTH-644 telehandler is a heavy-duty construction machine designed for lifting, loading, and rough-terrain operations. Its transmission system plays a critical role in delivering smooth power transfer under high torque conditions.
To ensure long service life and reliable performance, using the correct transmission oil is essential. Incorrect fluid selection can lead to overheating, slipping, or premature wear of internal transmission components.
Genie GTH-644 Transmission Oil Type
The recommended transmission oil for Genie GTH-644 is SAE 10W hydraulic/transmission oil that meets API CI-4 or CK-4 specifications. In many applications, CAT TO-4 equivalent transmission fluid is also used depending on operating temperature and load conditions.
Factory specifications indicate the use of Chevron RPM SAE 10W or equivalent, making it critical to avoid mixing incompatible fluids that may affect clutch performance or torque converter efficiency.
Best Overall Choice: SAE 10W TO-4 equivalent transmission fluid provides the best protection for the Dana powershift transmission system.
Genie GTH-644 Transmission Oil Capacity
Transmission oil capacity varies slightly depending on the installed Dana transmission model. Proper filling is critical to avoid pressure loss or overheating.
Genie GTH-644 Transmission Oil Change Interval
Regular transmission maintenance is essential for preventing clutch wear and torque converter failure in heavy-duty telehandlers.
Operating Condition | Recommended Interval |
|---|---|
Normal Construction Use | Every 1000 hours |
Heavy Load / Continuous Operation | Every 800–1000 hours |
Severe Conditions (Dust, Heat, Heavy Towing) | Every 500–800 hours |
Transmission Filter Information
The Genie GTH-644 transmission system uses an internal filtration system designed to protect the torque converter and hydraulic circuits.
- Replace transmission filter at every oil change
- Use OEM or Dana-approved filter components
- Inspect filter for metal debris during service
- Always clean housing before installing new filter
Genie GTH-644 Transmission Oil Change Cost
Due to the large oil capacity and specialized fluid type, service cost can vary significantly.
- DIY Service: ₹3,000 – ₹7,000
- Workshop Service: ₹7,000 – ₹12,000
- Dealer Service: ₹12,000 – ₹20,000
- Oil Type Factor: TO-4 fluids are more expensive than standard oils
How to Change Transmission Oil in Genie GTH-644
Common Transmission Problems
Slipping Gears
Often caused by low or degraded transmission oil.
Overheating
Heavy loads and dirty fluid can lead to high transmission temperatures.
Delayed Shifting
May indicate contaminated or incorrect fluid type.
Frequently Asked Questions (FAQ)
What oil does Genie GTH-644 transmission use?
SAE 10W TO-4 equivalent transmission oil is recommended.
How much transmission oil does it hold?
Approximately 13.6 quarts (12.9 liters).
How often should transmission oil be changed?
Every 1000 hours or earlier under heavy use.
Can I use hydraulic oil instead of transmission oil?
Only if it meets TO-4 or manufacturer specifications.
Final Thoughts
The Genie GTH-644 transmission system is built for heavy-duty lifting and demanding job site conditions. Using the correct SAE 10W TO-4 equivalent oil and following proper service intervals ensures long-lasting performance and reduces costly breakdowns.
Quick Summary
- Oil Type: SAE 10W TO-4 Equivalent
- Capacity: 13.6 Quarts
- Change Interval: 800–1000 Hours
- Key Tip: Replace filter every service