A cooling tower gearbox operates in one of the most punishing M&E environments in Kuala Lumpur and Selangor: a constant 100% humidity "rain zone" filled with corrosive water treatment chemicals. Over time, moisture ingress contaminates the oil, leading to "pitting" on gear teeth and bearing race failure.
EKG M&E Sdn Bhd provides precision gearbox overhauls to restore the mechanical torque efficiency of your heat rejection system, preventing catastrophic fan failure and Chiller plant downtime.
We don't just change the oil; we perform a structural and mechanical restoration of the drive train.
Before dismantling, we perform a Vibration Spectrum Analysis. This tells us if the noise is coming from the "Input Shaft" (high speed) or the "Output Shaft" (low speed).
Gear Teeth Inspection: We check for "spalling" or "pitting" on the spiral bevel or helical gears. If the "Backlash" (the gap between teeth) is too wide, the fan will "clunk" during start-up, sending shockwaves through the tower's FRP casing.
Moisture is the primary enemy.
The Solution: We replace all internal bearings with high-load, matched sets.
The Seal Upgrade: We install Inpro/Seals or specialized triple-lip viton seals to create a "labyrinth" that physically prevents cooling tower water from entering the oil reservoir, even during heavy Malaysian monsoon storms.
A refurbished gearbox is only as good as its alignment with the motor.
Laser Shaft Alignment: We use laser tools to ensure the motor shaft and gearbox input shaft are perfectly co-linear. Even a $0.5\text{ mm}$ offset creates "Cyclic Loading" that will destroy new bearings within 6 months.
As an HVAC and Clean Air Specialist, we optimize the gearbox for the tropical duty cycle:
Synthetic Lubrication: We utilize high-viscosity synthetic oils with "Extreme Pressure" (EP) additives. These maintain their film strength even when the gearbox is sitting in the 40°C+ ambient heat of a KL rooftop.
VFD Soft-Start Logic: We recalibrate your Variable Frequency Drive (VFD) to include a 30-second "Ramp-up" time. This prevents the "Torsional Shock" of a hard start, protecting the gear teeth from snapping under the massive inertia of the fan blades.
| Symptom | Probable Cause | EKG M&E Rectification |
| Grinding / Droning Noise | Bearing Race Fatigue. | Full Bearing Set Replacement. |
| Oil "Milky" Appearance | Water Ingress / Seal Leak. | Oil Flush & Triple-Lip Seal Install. |
| Heavy Vibration | Misalignment / Gear Pitting. | Laser Alignment & Gear Refurbishment. |
| High Operating Temp | Low Oil / Excessive Friction. | Oil Level Sensor & Synthetic Upgrade. |
No-Load Run Testing: Every overhauled gearbox is bench-tested at our facility to monitor temperature and noise levels before being re-installed on your roof.
Structural Support Check: We inspect the gearbox mounting beams for "Base Softness" and rust, ensuring the restored unit sits on a perfectly rigid platform.
Strategic Support: Based in Kuala Lumpur, we provide turnkey removals, overhauls, and 24/7 emergency support for commercial buildings and industrial plants.
Malaysia
