Silicone Oil Fan “Roar” Solution (Focus on Silicone Oil Issues)-Iota

Products

News

Office Address:	Sunmoon Science Park, 985 Xingzhong Road, High-Tech Zone, Bengbu, China
Factory Address:	Mohekou Industrial Park, Huaishang District, Bengbu, Anhui, China
Contact:	Nathan Zhang
Phone:	0086-552-19805521900
FAX:	0086-552-3822922
Mobile:	19805521900/18119733779
WebSite:	www.siliconeoil.cn www.siliconeoil.net
Email:
QQ:	729118868

News > Dynamic industry > Silicone Oil Fan “Roar” Solution (Focus on Silicone Oil Issues)

Silicone Oil Fan “Roar” Solution (Focus on Silicone Oil Issues)

The “roar” of a silicone oil fan is typically directly related to abnormal operation of the silicone oil clutch. Core causes include silicone oil leakage, oil deterioration, or mechanical faults in the clutch caused by these issues. The following provides targeted diagnostic and repair steps focusing on silicone oil-related problems.

I. Diagnosis: Confirm if the Issue is Silicone Oil Related

1. Visual Inspection (Initial Assessment)

Check the clutch housing: Silicone oil is translucent to light yellow. Oil stains indicate possible leakage due to worn or damaged seals.
Check fan operation:
- Cold start (engine at low temperature): Fan should rotate slowly and quietly.
- If the fan runs at high speed with noticeable noise during a cold start, clutch sticking or oil leakage may be causing abnormal engagement.

2. Silicone Oil Condition Check (Key Step)

Disassemble the clutch (professional handling recommended): If no external leak is visible but oil deterioration is suspected.
Assess the oil:
- Color: Normal = light yellow or translucent; black, brown, or carbonized indicates thermal aging.
- Viscosity: Normal = honey-like; if too thin (water-like), it cannot effectively transmit torque.

3. Functional Test (Verify Engagement)

Cold test: Rotate fan blades by hand → should have some resistance but rotate slowly; if fully stuck, mechanical issues such as friction plate adhesion may exist.
Hot test: Heat engine to ~90 °C → fan speed should increase noticeably; if it does not, it may be due to oil leakage or temperature control malfunction.

II. Solutions for Silicone Oil-Related Issues

Case 1: Silicone Oil Leakage (Seal Aging/Damage)

Cause: Worn housing seals or shaft seals allow oil loss, preventing normal clutch engagement.
Solution:
- Replace the entire clutch assembly (refilling oil alone is insufficient).
- During installation, clean contact surfaces and tighten bolts to specified torque to prevent leaks.

Case 2: Silicone Oil Deterioration (High Temperature or Low-Quality Oil)

Cause: Prolonged high-temperature operation or use of non-standard oil → viscosity reduction, carbonization, blockage of internal channels.
Solution:
- Replace the entire clutch assembly (changing oil alone is insufficient).
- Prevention:
  - Use only manufacturer-specified high-temperature, anti-carbonization silicone oil.
  - Regularly inspect the cooling system (radiator, water pump) to prevent overheating.

Case 3: Clutch Mechanical Failure (Secondary Damage from Oil Issues)

Cause: Oil leakage or deterioration leads to friction plate wear, adhesion, or spring breakage, causing vibration or sticking.
Solution:
- Replace the entire clutch assembly (mechanical damage is not repairable).
- Post-installation verification:
  - Fan speed should increase appropriately with engine temperature.
  - At cold start, fan should rotate slowly and quietly.

✅ Summary:
The main causes of a silicone oil fan “roar” are oil leakage, oil deterioration, or resulting mechanical failures. The most effective solution is timely replacement of the clutch assembly, use of manufacturer-approved silicone oil, and regular maintenance of the cooling system to prevent recurrence.

分享到

Feedback to "Iota Silicone Oil (Anhui) Co., Ltd."