T E S   T R A N S M I S S I O N S
Repair and recondition of Automatic transmissions and manual gearboxes for cars and light commercial vehicles
T r a n s m i s s i o n    R e m a n u f a c t u r e r s
We repair gearboxes for these Car Manufacturers: Isuzu, Renault aston martin, Audi, Bentley, BMW, Chrysler, Citroen, Daewoo, Daihatsu, Daimler, Fiat, Ford, Honda, Hyundai, Suzuki, KIA, Jaguar, Land Rover, Lexus, Mazda, Mercedes, Mitsubishi, Nissan, Peugeot, Porsche, Renault, Rolls Royce, Rover, Saab, Seat, Skoda, Subaru, Toyota, Vauxhall, VW, Volvo, Xedos and in these areas: Avon, Bath, Berkshire, Bournemouth, Bristol, Devon, Exeter, Dorset, Gloucestershire, Hampshire, Oxford, Reading, Portsmouth, Salisbury, Southampton, Somerset, Wiltshire, Jersey, Ireland.
Telephone: +44 (0)1373 822041    Fax: +44 (0)1373 858790
The basic Remanufacturing process is fairly obvious. A good clean and strip down must come first, but wherever possible, a report on the nature of the fault for a particular gearbox is referred to ensure that likely component faults are identified during the strip down process. Inevitable inspections of all assemblies and components follows, with the faulty items either being disposed of or reclaimed in the appropriate way. There are of course some gearboxes that represent routine work for TES, especially those boxes embraced by their contracts with vehicle manufacturers. In such cases, experience will enable the staff to quickly identify routine faults. However, of note is the fact that TES do in fact perform modifications to the gearboxes and components (approved where necessary) to improve performance or reliability. The largest single major assembly (certainly on a cost basis) is the torque converter. Remanufacturing of torque converters involves separation of the sections, which are originally welded together. Remanufacturing of the torque converter therefore involves more than just replacement of the worn components because the assembly must then be welded back together again. The obvious point is that the assembly is then going to be turning at maybe 7000 rpm and not only does it need to have a secure weld but the assembly must remain in balance after remanufacturing. TES perform the torque converter rebuild, including the re-welding operation on site and therefore have total control on quality of the finished product. Although automatic transmissions have traditionally had mechanical and hydraulic control and actuation which has provided the ability to adapt to the different driving conditions, the introduction of computer control has further enhanced the capability of operation. However, an implication is that the complete transmission assembly is now subject to outside influences with regard to performance. This situation increases the need to ensure that a remanufactured gearbox performs correctly prior to despatch to the customer because poor performance may in fact be caused by electronic problems and not the gearbox itself. Testing has in fact been a fundamental part of the process at TES but to eliminate any compromise and enable guarantee of workmanship, TES designed and built their own test rigs. A number of test rigs are made use of at TES to test the operation of valve bodies, pressure and temperature transducers etc. However, 2 computer controlled "end of line" test rigs are used to simulate driving conditions to ensure that each completed gearbox performs correctly before shipment. A big advantage of the TES testing processes is that hard copy point outs are produced of the tests for each gearbox thus completing a traceable performance and rebuild history. It is difficult to relate the professionalism at TES but any visitor would walk away with an overwhelming impression of meticulous detail in all of the processes performed at the factory. As well as remanufacturing the gearboxes, TES have found that customer support by way of a dedicated customer helpline has the dual benefits ensuring customer loyalty but also providing valuable information back to TES staff. As stated previously, there is more than just cleanliness involved in remanufacturing an auto gearbox but the effort applied to this aspect is indicative of the overall operation. Testing is another example, TES have seen a need to design and build their own test equipment to ensure that the results are meaningful and sufficiently comprehensive. And perhaps ironically, this has lead to TES forming a separate company that specialises in building and selling the test equipment to other companies. With a range of remanufactured gearboxes embracing Peugeot, VW, Renault, Ford and Vauxhall, TES is also able to supply most manufacturers' gearboxes either from stock or by reworking customers units. After all the bad press in recent years of remanufacturing, it is good to see that TES and their professional competitors do not take short cuts or work for a fast buck.
Boxing Clever from: AutoTimes by Peter Coombes In last months issue, we looked at the re-manufacture of ECU's, which is a relatively modern sector for the Remanufacturing industry. However, a more established sector for Remanufacturing is for transmission products. Over the years, there have been many suppliers, good and bad, of remanufactured manual transmissions but just a few suppliers of automatic transmissions. One of the problems of course is that the auto transmission market was by comparison much smaller than the manual box sector, but the other issue is the complexity of the automatic gearbox which necessitates greater investment in time and resource to enable a quality remanufactured product to be produced. On a personal level, it is a long time since I worked on an auto gearbox so I welcomed the opportunity to visit an auto gearbox re-manufacturer to look at the newer breed of auto gearbox and the processes involved in Remanufacturing. Wiltshire based TES Transmissions has been around since 1974 and has a wealth of experience in auto trans work. Because of the size of the market and the fact that replacement of an auto trans box is often dealt with by specialist workshops, there is a tendency for most of the industry to be unaware of the participants in this sector. However, along with the well-established ATP and Sussex Automatic Transmissions, TES provides product to the independent repair sector as well as the private sector. Interestingly, TES provides remanufactured units for vehicle manufacturers, which highlights the cost advantages of remanufacturing allied to the ability to produce a high quality product. The one overriding issue that I always remember about auto trans rebuilding was the need for cleanliness in the workshop. TES inevitably need to embrace and implement a spotless working environment, especially in the rebuild area. But cleanliness alone does not ensure a good finished product. An automatic gearbox, even the older generations, require careful assembly of components to ensure correct operation. Slight wear of certain components or minor damage can easily and very noticeably turn an otherwise good box into a disaster. Therefore, whilst a remanufactured gearbox will not have all components renewed during its reassembly, care is necessary to ensure that the critical components are checked, replaced or if necessary, manufactured in-house when an original component is difficult to source.
T E S   T R A N S M I S S I O N S
Repair and recondition of Automatic transmissions and manual gearboxes for cars and light commercial vehicles
T r a n s m i s s i o n    R e - M a n u f a c t u r e r s
Telephone: +44 (0)1373 822041 Fax: +44 (0)1373 858790
We repair gearboxes for these Car Manufacturers: Isuzu, Renault aston martin, Audi, Bentley, BMW, Chrysler, Citroen, Daewoo, Daihatsu, Daimler, Fiat, Ford, Honda, Hyundai, Suzuki, KIA, Jaguar, Land Rover, Lexus, Mazda, Mercedes, Mitsubishi, Nissan, Peugeot, Porsche, Renault, Rolls Royce, Rover, Saab, Seat, Skoda, Subaru, Toyota, Vauxhall, VW, Volvo, Xedos and in these areas: Avon, Bath, Berkshire, Bournemouth, Bristol, Devon, Exeter, Dorset, Gloucestershire, Hampshire, Oxford, Reading, Portsmouth, Salisbury, Southampton, Somerset, Wiltshire, Jersey, Ireland.
Boxing Clever from: AutoTimes by Peter Coombes In last months issue, we looked at the re-manufacture of ECU's, which is a relatively modern sector for the Remanufacturing industry. However, a more established sector for Remanufacturing is for transmission products. Over the years, there have been many suppliers, good and bad, of remanufactured manual transmissions but just a few suppliers of automatic transmissions. One of the problems of course is that the auto transmission market was by comparison much smaller than the manual box sector, but the other issue is the complexity of the automatic gearbox which necessitates greater investment in time and resource to enable a quality remanufactured product to be produced. On a personal level, it is a long time since I worked on an auto gearbox so I welcomed the opportunity to visit an auto gearbox re- manufacturer to look at the newer breed of auto gearbox and the processes involved in Remanufacturing. Wiltshire based TES Transmissions has been around since 1974 and has a wealth of experience in auto trans work. Because of the size of the market and the fact that replacement of an auto trans box is often dealt with by specialist workshops, there is a tendency for most of the industry to be unaware of the participants in this sector. However, along with the well-established ATP and Sussex Automatic Transmissions, TES provides product to the independent repair sector as well as the private sector. Interestingly, TES provides remanufactured units for vehicle manufacturers, which highlights the cost advantages of remanufacturing allied to the ability to produce a high quality product. The one overriding issue that I always remember about auto trans rebuilding was the need for cleanliness in the workshop. TES inevitably need to embrace and implement a spotless working environment, especially in the rebuild area. But cleanliness alone does not ensure a good finished product. An automatic gearbox, even the older generations, require careful assembly of components to ensure correct operation. Slight wear of certain components or minor damage can easily and very noticeably turn an otherwise good box into a disaster. Therefore, whilst a remanufactured gearbox will not have all components renewed during its reassembly, care is necessary to ensure that the critical components are checked, replaced or if necessary, manufactured in-house when an original component is difficult to source.