How To Repair A Transmission Jack

Red transmission jack

It is safe to say that no garage in the world would be complete without a proper transmission jack.

This relatively simple piece of equipment helps to remove and transport transmissions safely.

If you manage to get your hands on a high-quality transmission jack, you should never have to replace it.

However, sometimes parts cease to work. You do have to know how to repair a transmission jack after buying one.

Otherwise, your wallet might have a thing or two to say to you afterward.

(Check out this car repair manual comparison gudie)

What Is A Transmission J​​​​ack?

A transmission jack is a type of hydraulic device that can be found in most garages.

It serves the purpose of raising or lowering a transmission safely once the transmission has been disconnected from a vehicle.

The majority of transmission jacks have the ability to reach a variety of heights, with some reaching six feet or higher.

Transmission jacks are fully adjustable, enabling you to access the transmission at the perfect angle.

car jack under car

Otherwise, you could easily hurt yourself.

The range of motion of a transmission jack is often referred to as either the vertical range or the clearance range.

It also includes both the lowest and highest height that the transmission jack can reach.

Different Types

Generally speaking, garages have one of two different types of transmission jacks. 

A low-profile transmission jack has the ability to reach different areas of limited access, such as when a car is not raised off the floor.

While a high-profile transmission jack also features a lift that sits on top of a hydraulic pedestal, this type of transmission jack works best when used with a vehicle that sits very high.

Red transmission jack

Either way, a transmission jack has to remove and lower a transmission.

You can immediately work on the transmission on the jack itself without the need for other equipment or a table.

You can then lift the transmission back into the car as soon as the work is done.

You can then lift the transmission back into the car as soon as the work is done.

One factor that you have to take into consideration when choosing a transmission jack is that different models are capable of handling different weights.

Some of them can only handle 500 pounds, whereas others can handle 2000 pounds with ease.

Common Potential Problems And How To Repair Them

The transmission jack lift is refusing to load

A transmission jack lift that is refusing to load is usually caused by an inadequate air supply.

You can fix this by simply ensuring that an adequate air supply is directed into the transmission jack, and the problem should be resolved immediately.

If that doesn’t work, you could potentially be overloading your transmission jack.

Most transmission jacks will not work with anything that weighs more than their maximum weight capacity.

You can quickly see if this is the cause of the problem by testing the jack out with a transmission that you know weighs less.

The Transmission Jack Will Not Lower After It Has Been Unloaded

If your transmission jack will not lower after it has been unloaded, it could be for one of two potential reasons.

The first is that the reservoir is too full, a problem that can be fixed by draining the fluid to the right level.

The other is the linkages binding. 

If you believe that this is the cause then you should clean and lubricate all of the moving parts that you can access, which should resolve the problem completely.

The Transmission Jack Lift Is Performing Poorly

Generally speaking, low fluid levels and air trapped within a system are enough to make a transmission jack perform inadequately.

If you believe that the fluid level is low, then you should check it immediately.

If you believe that air is trapped in the system, then you need to do a little bit more work.

First, make sure that the ram is fully retracted and remove the oil filter screw.

This should be enough to let the pressurized air escape quickly, then make sure that you adjust the oil filter screw back to its initial position.

The Transmission Jack Will Not Lift To Full Extension

A transmission jack that will not lift to full extension is relatively easy to fix.

The problem itself is usually caused by an excessively low fluid level, so you simply have to add fluid until the correct level is reached.

This should fix the problem immediately.

The Transmission Jack Bleeds Off After It Has Been Used

 A transmission jack that starts to bleed off as soon as it has been used points to a problem that needs to be rectified immediately. 

It is usually caused by an overload condition, where the transmission jack has been used to carry a weight heavier than its maximum capacity.

You can fix this by remedying the overload condition if the transmission jack is still in use or by ensuring that it is not used to carry more than its maximum weight capacity again.

The Transmission Jack Will Not Hold The Entire Load.

A transmission jack that will not hold the entire load correctly is usually caused by one of three different problems.

These include the release valve not closing properly, the hydraulic jack oil being contaminated, and the pump valves not sealing correctly.

Unfortunately, all of these problems should only be fixed by a professional to avoid causing further damage to the hydraulic jack.

Also read: how to use a transmission jack adapter

Fixing Your Own Hydraulic Jack

Having to fix your own hydraulic jack can be troublesome, but it can also save you a lot of money in the long run.

As you can see, a lot of the common problems that occur can be fixed quickly and with little effort.

If you are uncertain about how to fix the problem that you are having, then you should contact a specialist immediately.