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Gearbox repair · Terex Comedil
Terex Comedil Gearbox Repair in Fontana
When a Terex Comedil gearbox starts making noise, running hot or shedding metal into its oil, the machine behind it is living on borrowed time. We rebuild Terex Comedil gearboxes working in Terex Comedil tower-crane slew, hoist and trolley drives at our Fontana shop at 14166 Whittram Ave — strip and measure every gear, shaft and bearing, manufacture what can no longer be bought, and return a box that runs to specification. Everything is done under one roof by the crew that quoted the job, with no work farmed out and no parts swapped on guesswork.
Gearbox repair · Terex Comedil
How Terex Comedil gearboxes wear — and what we do about it
The Terex Comedil units that reach our bench most often show slew-ring drive tooth fatigue, hoist gear wear from lift cycles, and weather-exposed seal failure on cranes that live outdoors. At teardown we record backlash, tooth contact patterns, bearing condition, shaft wear and housing bore condition before anything is quoted — then we renew what the measurements condemn: bearings and seals as a set, shafts restored or made new, and gears cut in-house when the original is worn past saving or discontinued. Backlash and preload are set to specification and the finished box is run-checked before it leaves Fontana.
Brands we serviceTerex ComedilFalkFlenderSEW-EurodriveHansenNordSumitomo
Terex Comedil Gearbox Repair in Fontana · Fontana, CAOne Fontana shop for gears, machining and rebuilds
Gear cutting, machining, rebuilding and testing all happen at 14166 Whittram Ave, Fontana, CA 92335 — so a Terex Comedil gearbox job never waits on an outside machine shop. Regular hours are Monday to Friday, 6 AM to 5 PM, with 24-hour rush and emergency service every day of the year, 365 days. Talk to John Clark's team on (800) 821-3404 or (949) 400-2937, or write to [email protected], for a free quote.
- Terex Comedil gearbox teardown, inspection and full rebuild
- Replacement gears manufactured in-house, including discontinued gears
- Bearing, seal and shaft renewal set to specification
- Backlash and preload set and run-checked before release
- 24-hour rush and emergency gearbox service, 365 days
Our 8-step repair process
A clear path from the first call to a tested component or machine returned to work.
Inspection
Disassemble and evaluate the complete failure.
Photos & video
Document condition and findings for a clear repair conversation.
Repair quote
Define the recommended work and quote before proceeding.
Approval
Confirm scope, urgency and the practical path forward.
Manufacturing
Machine, weld, rebuild or reverse engineer required components.
Testing
Verify operation and workmanship before release.
Shipment
Return the completed component or equipment to service.
Frequently asked questions
Can you rebuild a tower-crane hoist gearbox?
Yes — lift-cycle gearing is measured and renewed or cut in-house, bearings and seals replaced as a set, and backlash reset so loads lift and hold without drift.
What are the warning signs a gearbox needs attention?
New noise under load, rising operating temperature, metal in the oil, leaking seals and growing backlash are the usual warnings — catching them early is the difference between a bearing-and-seal renewal and a full gear replacement.
Do you offer rush gearbox repair?
Yes — 24-hour rush and emergency service runs every day of the year. Call (800) 821-3404 or (949) 400-2937.
Related services
Emergency breakdown? Call the 24-hour rush line.
(949) 400-2937Schedule service or open a repair order
Request a service call.
Include the make, model, symptoms, location, urgency and preferred service time. Your details open in a text to John so you can review them before sending.