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Technical / Sale Enquiry Form

Please complete the form below:

Engine Type:
Transmission Type:
Are you able to get your vehicle to one of our branches nationwide, for a free diagnostic service?

Or will you prefer to purchase a loose gearbox?

Would you prefer to buy another gearbox, or do you have time to send yours in for repair?

Which warranty would you require?

Would you be able to get your old failed gearbox back to us (At your own cost)?

Who would you use to remove and fit your gearbox?

Can you provide us with an engine code and/or gearbox code (You may have to ask a technical person for these details)?

Great! Please visit any of our branches for a free diagnostic test while you wait.
If you cant make a trip right away and would like to know more about what the job might cost, or how long it will take, please answer the questions below:

Would you prefer to buy another gearbox, or do you have time to repair your gearbox and possibly save money?

Which warranty would you require?

8 - 3 =

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Mayfair Gearbox's 23 Years In Business

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Minimizing Gearbox Failure

With service prices continuously rising and funds tightening, preventative maintenance is central to extending the lifespan of gearboxes. When machinery fails, often the prevalent concern is how to get it functioning again, and the premium costs related to that. However, discovering the source and developing a comprehension of how, through preventative maintenance measures, future gearbox failures can be minimized.

A crucial first step in any preventative maintenance measure is ascertaining the potential reasons for equipment failure. By giving managers and service technicians this knowledge, a crucial connection in the power transmission chain, they can create an effective preventative maintenance program that will ultimately lengthen the lifespan of gearboxes and help thwart extreme replacement/repair costs.


Sufficient lubrication is extremely perilous to all gearboxes and will aid in preventing gear and bearing failures. The keys to sustaining effective lubrication are using the appropriate lubricant, keeping oil clean and free of external materials, and maintaining a sufficient oil flow. Lubricant selection is centred on several factors like gear type, load type, speed, operating temperatures, and input power (among others), and should be left to a gear lubrication specialist.

When lubrication problems such as scoring and galling are generally caused by oil film breakdown do occur, which results in metal-to- metal contact, and high temperatures, which cause ‘gear-teeth’ surface damage. If a gear persists operating with inadequate lubrication, the gear's teeth will reduce to the point where replacement is the only solution.

Maintenance experts have numerous important tools used for diagnosing gearbox lubrication problems, the most come of which is oil analysis. By regularly analysing particulate concentration and content in the oil, engineers can monitor the condition of an operating gearbox and circumvent damage that may be beyond repair. Further analysis of the oil can yield vital information about the condition of the lubricant used in the equipment, alerting engineers to possible problems within the lubrication system.


Vibration is another important indicator in the diagnosis of machine faults. Each machine fault generates a specific vibration profile, and a single vibration measurement can provide information concerning multiple components.

By analysing shaft vibration, engineers can figure out whether the cause of the machine fault is imbalance, misalignment, general looseness or wear, bearing defects, gear defects or some other unexpected problem.

Imbalance is the force generated by a rotating body when its centre of mass is offset from its centre of rotation. Imbalance can cause other faults to appear. Misalignment is the deviation from a common centreline during operation and can occur as offset (shafts meeting square, but not on a centreline), angular (shafts meeting at an angle from one another), or both. Gear damage caused by misalignment often presents itself as a fracture originating at one end of a gear tooth, occurring on a diagonal line. It is also a common cause of broken teeth on helical and bevel gears. Wear is another fault determinable by vibration analysis, and can cover a broader range of gear damage - from scoring and galling, to abrasive wear and plastic yielding. Left alone, any of these machine faults can cause enough damage to necessitate shutting down a process. The key is to analyse the vibration data on a routine basis.

Establishing a preventative maintenance plan

While identifying the cause of equipment failure can sometimes be as simple as looking closely at the damage, discovering the root cause of such a problem can be considerably more difficult. Instrumenting the equipment solves only part of the problem. It is having the technical skill to interpret the data over time that has the biggest impact on reducing unplanned downtime. Unfortunately, many companies have reduced the number of in-house experts available to review such data.

Outsourcing preventative maintenance functions is certainly an option, and one that allows engineers to focus on their own core competencies, while letting experts, with access to both a strong knowledge base and a wide range of equipment, handle routine preventative maintenance and repair duties. When selecting a preventative maintenance provider, several fundamental services should be evaluated as part of the program. Providers should be thoroughly skilled in performing gearbox failure root cause analysis, as well as have the ability to react to breakdowns, scheduled maintenance outages, parts reconditioning, service upgrades, reverse engineering, alignment and balancing and on- or off-site diagnostic services.

Any sound preventative maintenance contract should include a strong warranty on all equipment serviced. Such warranties often cover many of the services already mentioned, and are ultimately a value-add to the refurbished equipment. Mayfair Gearbox specialises in Heavy Commercial, Light Duty Truck and Car Remanufactured Fleet Gearboxes and Diffs for all types of Fleets. We understand that downtime costs fleets money which is why we are committed to getting you back on the road as quickly as possible. We carry a complete line of products to service any size fleet and combined with vast years of experience, nationwide coverage and 18 OE Approvals, Mayfair Gearbox offers superior service to our customers.

Quick Facts

Who We Are

Mayfair Gearbox is a National and International supplier of fleet reman gearboxes, diffs and propshafts. We are led by a Management Team of true industry professionals who have pioneered the gearbox remanufacturing industry. Mayfair Gearbox has been established for 20 years in the Industry.

What We Do

Mayfair Gearbox is the solution to limit your fleet’s downtime! We are quality driven to provide only the finest remanufactured gearboxes, diffs and propshafts.

What Makes Us The Best

Commitment and integrity to provide outstanding quality, exceptional service and support at all times, to you our valued Customer. Approved by most manufacturers and a National Footprint of 14 Branches.

Product Division

Heavy Commercial & Buses
Truck Gearbox Repairs Bus Gearbox Repairs
Earthmoving 4 x 4
Earthmoving Gearbox Repairs 4X4 Gearbox Repairs
Passenger Manual Passenger Automatic
Manual Gearbox Repairs Automatic Gearbox Repairs

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Remanufacturing = Sustainability + Efficiency

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Mayfair Gearbox's 23 Years In Business

Book A Test Drive