Gearbox Rebuild

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  1. Gearbox Rebuilding

Manual Transmission Repair and Service at Cottman. Whatever the reason you have for owning a car with a manual transmission, when you have a problem with your car’s transmission, there’s only one name you need to remember: Cottman. Rebuild process A thorough Motorsport gearbox service requires the complete disassembly of the gearbox. Each part is stripped down and inspected one by one, to determine that they are not damaged. Before assembling the gearbox, the sales consultant will get in touch to discuss the needed and advised actions in order to rebuild the gearbox.

QRS Standard Overhaul and
Repair Procedures and Practices

QRS General Mechanical Repair Specifications

1. All speed reducers or assemblies will be:

  • Completely disassembled.
  • Hot Tank Stripped.
  • Cleaned, wire brushed of all rust and grease.
  • Inspected and/or tested as follows:
  • Measure all 'fits' and compare with original drawing dimensions. Provide photographs and/or sketches for assembly.
  • Cases, housings, etc. - will be visually inspected for cracks and other signs of wear.
  • Shafts & Gearing - visually inspect and dimensionally checked, for possible reuse.

2. A detailed line by line quotation of all work required to recondition the assembly/speed reducer will be prepared and include:

  • Listing of any new parts required.
  • Summary of required procedures to return reusable parts to print specification.
  • Summary of price for labor and all materials to complete the job.

3. You must approve repair prior to any work proceeding.

  • QRS will give a one-year warranty when we have replaced all parts, bearings, and seals as recommended in our quote.
  • If the job is not awarded to QRS, compensation for disassembly labor, cleaning, inspection, and freight will be made to Quality Reducer Service, Inc.
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QRS Repair Specifications:

1. Fits

  • All fits will be returned to original size and relative centers using either; plating, sleeving and/or welding and machining as approved by the customer.

2. Shafting

  • Repair may be made by plating and grinding, or machining and sleeving.
  • Will be straight and finished in accordance with tolerances and finish specifications as indicated on appropriate drawings.
  • New shafting provided will match the specifications and dimensions of the original part as per customer print.
  • Exposed threads, shaft ends and couplings will be protected with an anti-rust protection coating prior to shipping your Gear Box.

3. Gearing

Gearbox Rebuilding

  • Will be dimensionally inspected to customer prints, manufacturers' prints, or reverse engineered. See attached literature from our gear manufacturing facility, Circle Gear, Inc.
  • New gearing provided will meet or exceed the specifications and dimensions of the original parts as per customer print.
  • QRS has a direct affiliation with Circle Gear and Machine Company.