FAQ automatic transmission

Is my transmission faulty?

As soon as automatic transmission problems become known, you should act immediately. At the first sign it is often still possible to repair minor damage to the transmission before serious problems occur.

For technically competent vehicle owners, it is recommended to first of all to check the transmission oil. You must pull the transmission dipstick and check the transmission oil. Check the oil level through the overflow pipe at max. 35 ° - 40 ° C, follow manufacturer's instructions. Furthermore, it would make sense to remove the oil pan and to investigate both the oil pan and filter screen for contamination.
If the transmission fluid is not burned, so red (or yellow in some gears) and no shavings in transmission oil, there is a real chance that the transmission is not or not badly damaged.
In this case, it would be advisable to make an appointment with us, in which we examine whether it is possible to be a control or other problem.
In mechanical-hydraulic transmission can be the cause for a defective vacuum unit, a defective Kickdown, a hanging governor, a defective sliding shift housing or transmission oil shortage.
With newer, electronically controlled transmissions, however, an external error can be a faulty throttle position sensor, control computer, mass air flow sensor or harness be responsible.
Can be internal in the transmission faulty switch or pressure control valves, speed - pressure - or temperature sensor as well as sliding shift housing and lack of oil to be possible causes.
If your vehicle has no forward nor backward drive, often, it seems likely that the torque converter is defective.

What is the difference between repair and overhaul?

At smaller transmission losses, we also carry out targeted repairs. When repairing only the obviously defective parts to be replaced. The repair is carried at cost.
Only in transmissions that do not have a high degree of pollution, repair is at all possible. In this case, for cost reasons, the torque converter may be used again. You get half a year warranty on the parts replaced. In a general overhaul the automatic transmission is completely disassembled and thoroughly cleaned.Thereafter, a fault diagnosis. All wearing parts are changed, regardless of whether these parts are still functional or not. Defective parts will be replaced. The individual components are carefully checked and mounted. The torque converter is either replaced or repaired. The slide switch or the Mechatronics is tested on special test rigs slide switch for function and performance. After all modules are reassembled into a functional gearbox back together. The transmission is checked for one of our transmission test stands before delivery. The overhaul is carried out at a fixed price, unless housing is in order. You will receive a warranty of one year, unlimited mileage warranty. 

Why a functional torque converter with an overhaul because ever be replaced?

Almost always defective automatic transmissions are heavily conteminated. These dirt particles such as metallic shavings or burnt clutch lining, are also located in the torque converter.
Now, if used in the overhaul of the transmission of the old torque converter again, get all the dirt back over the oil circuit in the transmission. This will damage the transmission again.
Rinsing of the torque converter is not sufficient to remove all dirt particles from it. For converters with lock-up clutch, the problem is that you can not look into it and thus does not know how much the friction lining of the lock-up clutch is already damaged.
Only in transmissions that do not have such a degree of contemination, repair is possible. In this case, for cost reasons, the torque converter may be used again.

Why the gear exchange or repair principle the oil cooler to be cleaned or replaced?

Shavings or burnt clutch lining may be transported through the oil circuit in the oil cooler.
Now, if the transmission is overhauled and the oil cooler is not cleaned thorough, get the dirt particles with time over the oil circulation back into gear. In some cases, the oil cooler is so dirty that no adequate or no oil flow exists. Sufficient transmission oil cooling is no longer guaranteed.
In such a case, or if strong chips throughout transmission are present, the transmission oil cooler must always be replaced, otherwise the outdated gear is damaged and overheated again within a short time.

The transmission must be removed or repaired in the installed condition possible?

Is dark brown to black discolored transmission fluid or transmission fluid smells burnt, then the automatic transmission has to be removed in all cases. This is not the case, then you should remove the oil pan and this study on metallic abrasion. If heavy metal abrasion or even larger chips in the oil pan and the magnet are, there is such a strong mechanical defect that can not be resolved in the installed state.If heavily soiled and / or tension development, a major overhaul is necessary to remove all dirt particles from the transmission.

Must I will send or deliver my gearbox itself and pick up?

We work with a forwarding company to pick up and deliver Transmission. We charge a flat rate nationwide from 60, - € + VAT per one way and transmissions up to 100kg).
When you ship your transmission Your job is simply to make the transmission ready for shipping. So please make it as compact as possible! Best on a small pallet, in a box or a crate. Make sure that the oil is drained and packed spill-proof so no transmission oil can leak during transportation! You need to complete all shipping documents. A simple delivery note with your letterhead, and if possible a short description of the problem(s) and placing orders is sufficient. Of course you can also attach a request for information.
Then tell us your desired pick-up date. We will arrange the pick up with the shipping company.
After shipment from our warehouse or the return delivery of your old transmission you get the transmission usually within 24 hours after dispatch. We charge no extra cost. Delivery is by cash on delivery or check on delivery. You will be notified on the day the goods are shipped via fax / mail about the delivery.

Can the freight company take the old transmission at the same time it delivers thef the exchange transmission.?

Experience has shown that the best way is to compare both transmissions directly with each other prior to installation of the replacement transmission. Here, you can determine if all attachments are unscrewed from the old transmission. Therefore, you should send the old transmission at a later date to us.
In addition, most trucking companies deliver mornings to the customer and pick up during the afternoon.


Do you have any further questions? Please contact us.

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