Tech Tips for Slipping Transmission

4/30/2015

Slipping is one of the most common clutch problems. Slipping can occur right after installation or after years of service. A clutch slipping condition on a manual transmission equipped vehicle will manifest itself as excessive RPMs in the engine, but lack of acceleration.

There are 3 primary causes of slipping:

Oil leaks, over lubricated input shaft causing contaminated friction material
Misadjusted, binding, or worn release system, or blocked master cylinder compensation port.
Improperly machined flywheel.

Listed below are diagnoses of some different reasons for slipping:

Contaminated friction material can contribute to a slipping condition caused by the loss of the material's coefficient of friction.

Common causes of contamination include: over-lubricated input shaft splines, leaking engine rear main seals, and transmission input shaft seals. Inspect friction material for contamination.

If a vehicle has a hydraulic or manual cable release system, it is important to inspect for a binding condition. A release cable may be worn, stretched, or kinked.

If you are working with a hydraulic release system, there may be issues with the slave cylinder internally. These can include deteriorated seals, o-rings, and hose. The master cylinder may also have a blocked compensation port. This would cause the clutch to remain partially disengaged. These examples can also cause unsmooth pedal travel. Be sure to properly inspect and test the release system on the vehicle.

Another reason for slipping is improper step and cup dimensions after a flywheel has been machined. This would cause a "thick disc condition." A thick disc condition is a flywheel step that is too tall, or a flywheel cup that is too shallow. Due to the characteristics of the diaphragm spring the clamp load will be diminished, leading to a slipping condition.

Remember to pay attention to OE flywheel specifications.

6 Comments

https://findgaragedooropener.com link

8/11/2018 05:53:02 am

There are some interesting points in time in this article but I don?t know if I see all of them center to heart. There is some validity but I will take hold opinion until I look into it further. Good article , thanks and we want more! Added to FeedBurner as well

Lydia Ross link

9/24/2018 03:49:25 am

Thanks for addressing the reasons behind a slipping transmission and the way to overcome such mechanical error. Transmission is a key component of the vehicle which needs regular maintenance to work efficiently. So, the condition of different components of the transmission needs to be inspected at a regular interval and suitable initiatives need to be taken to keep the transmission in working order. Lubricant leak from the transmission not only affects the performance of the transmission but also could cost a lot of money. So, the pinhole associated with such kind of leakage needs to be identified and repaired in time.

Nadia Dexter

9/26/2018 03:55:33 am

Couldn't agree more. Leakage of transmission oil could influence the performance of the transmission in a very adverse way. So, the source of the leakage of the transmission fluid needs to be identified and repaired in time to prevent any major problem. Apart from this, over lubricated transmission also slips. Use of burned transmission fluid or skipping transmission fluid replacement affects the performance of the transmission in a very adverse way. So, the condition of the transmission needs to be inspected at a regular interval and if necessary should be replaced with suitable substitutes. To fix such kind of transmission problem, you could visit

http://www.cerroneseuropean.com/services

Sam Adams link

1/3/2019 01:54:47 am

Transmission slipping is one kinds of warning sign which indicates that the transmission has some sort of mechanical issues which should be fixed in time to keep the vehicle in working order. Leakage of transmission fluid is one of the most common reason behind the transmission slipping. So, the pinhole responsible for such kinds of leakage should be spotted and fixed in time to keep the vehicle in working order. In spite of that, other possible factors which could jeopardize the transmission should be taken into consideration to prevent any major problem.

Deidra Monika link

1/4/2019 02:02:30 am

Transmission slipping refers to the condition when the gear shifts automatically. It feels as if we are driving in a certain gear and it changes for no apparent reason. The most common cause of slipping transmission is low fluid level. Low fluid levels can create a number of problems such as overheating and not enough hydraulic pressure being produced to engage gears. It may be due to leakage of transmission fluid. So the source of leakage must be identified and repaired in order to fix the problem of slipping transmission.

Micheal Joseph link

6/13/2022 02:35:13 am

Thank you for thiss

Tech Tips for Slipping Transmission

Leave a Reply.

Cloquet Automotive

Categories

Archives

SITE MAP