Marley Cooling Tower Gear Drive / Right-Angle Drive Repair
Marley cooling tower right-angle gear drives rebuilt in our Rialto, CA shop — keeping SPX Cooling Technologies tower fans turning nationwide.
Repair experience with Marley cooling tower gear drives
American Gearbox Repair repairs and rebuilds Marley cooling tower gear drives — the right-angle Geareducer units made by SPX Cooling Technologies that drive the fans on industrial cooling towers. Our repair experience covers Marley right-angle fan drives across a range of tower sizes, from single-cell units to large multi-cell field-erected towers serving power plants, refineries, chemical plants and HVAC systems.
Please note: we are not an authorized dealer or authorized service center for Marley or SPX Cooling Technologies. We repair Marley equipment based on our repair experience, using inspection and rebuilding practices developed over years of working on cooling tower right-angle drives.
These drives live in a tough environment — constant moisture, chemical treatment, outdoor exposure and continuous fan loads. A failed fan drive takes a cooling tower cell offline and can force a plant to cut load, so we treat these jobs as urgent and inspect every unit fully before quoting.
Common Marley gear drive problems we fix
- Bevel gear pitting and wear — spiral-bevel gear sets worn by continuous fan loads and contaminated oil
- Water ingress and oil contamination — failed seals letting tower water into the gearbox, causing rust and scoring
- Bearing failure — worn pinion and output bearings producing fan vibration and noise
- Oil leaks — hardened seals, worn seal journals and leaking gaskets on the drive housing
- Fan shaft wear — scored output shafts and worn bearing seats from long service in wet conditions
- Housing corrosion — outdoor and chemical exposure corroding housings and hardware
How we rebuild your Marley gear drive
1. Inspection and failure analysis
We disassemble the drive, clean all components and measure bevel gear teeth, backlash, shafts and bearing bores. We check carefully for water damage and corrosion, the most common killers of cooling tower drives.
2. Gear and housing repair
Worn bevel gears are re-cut or manufactured new to match the original set. Shafts are reground or replaced, bores are repaired, and corroded housings are cleaned, inspected and refinished where sound.
3. Rebuild and run test
New bearings, seals and gaskets are fitted, gear mesh and backlash are set, and the drive is run-tested for noise, temperature, vibration and leaks. Every rebuild carries our 24-month warranty.
Replacement components
Spiral-bevel gear sets, bearings, seals, gaskets, fan shafts, pinion shafts, oil breathers and mounting hardware. Our in-house gear manufacturing helps when a Marley part is obsolete or on a long lead time.
Emergency and rush Marley repair
A cooling tower cell down in summer is an emergency. We provide 24/7 emergency service, 24–72 hour rush repairs on qualifying jobs, and emergency pickup & delivery to our shop nationwide. Turnaround depends on equipment condition, required parts, job complexity and availability. All work is performed at our Rialto, CA shop — we do not repair equipment on your site. Request a quote with your drive size and symptoms, and we will give you a straight timeline.
Need this unit back in service?
Call now or request a quote — emergency pickup & delivery available nationwide.