Tech Tip: Check Those Fluid Levels on 5R55N/S/W Transmissions – UnderhoodService

Tech Tip: Check Those Fluid Levels on 5R55N/S/W Transmissions

Jasper Engines & Transmissions incorporates a procedure to fill the Ford 5R55N/S/W transmissions with the correct level of fluid. Though the 5R55N, S and W are all similar in design, they each differ in specific areas based on the needs of the transmission's intended application.

Jasper Engines & Transmissions incorporates a procedure to fill the Ford 5R55N/S/W transmissions with the correct level of fluid.  
Figure 1.
Though the 5R55N, S and W are all similar in design, they each differ in specific areas based on the needs of the transmission’s intended application.  However, a common feature is the lack of a dipstick to check fluid levels.  “Some common complaints from customers on these transmissions are generally caused by low fluid levels,” says Craig Leuck, JASPER Transmission Division Manager.  “These complaints include gear slippage, ‘neutraling’ when fluid settles to one side of the pan while the vehicle is in a curve – losing forward motion, or general transmission failure.”  

The 5R55N/S/W is intended to hold 12 quarts of transmission fluid.  Inside the pan is a tube which determines the level of fluid (see Figure 1).  As the pan is filled, the fluid level will reach the top of the tube, then drip down the tube and out of the pan.  “This is the visual indication that the pan is full,” adds Leuck.  “But at this point, the pan only holds approximately eight quarts.”
Figure 2.
“The next step for the technician is to drive the vehicle until transmission fluid temperature reaches 180 degrees,” says Leuck.  “This opens up the transmission cooling system; lowering the fluid level in the pan.  The technician can then add the remaining four quarts to the transmission.”

JASPER attaches a bright orange sticker on the pan of each 5R55N/S/W (see Figure 2). This will remind technicians the transmission holds 12 quarts of fluid.  Also provided with the transmission is a Technical Bulletin explaining the procedure to properly fill the transmission.  

For more information on the remanufactured products of Jasper Engines & Transmissions, call (800) 827-7455, or log onto www.jasperengines.com.

You May Also Like

Spark Plug Replacement

Here are some tips to follow when replacing a spark plug.

Every time a spark plug fires, the spark burns a few molecules of metal off the plug’s electrodes. Over time, this eats away the electrodes and rounds off their sharp edges. The erosion gradually increases the gap between the electrodes, which, in turn, increases the firing voltage required to generate a spark. Eventually, the point is reached where the ignition system fails to produce enough voltage and the plug misfires.

What Happened To Turbo Lag In Today’s Engines?

Yesterday’s turbo lag was eliminated thanks to years of development and a bit of clever engineering.

Understanding Engine Timing – Chains, Gears and Belts

Perfect timing is critical in the performance world, and now, it’s required by your regular customers too.

Cartridge Oil Filters

Mistakes made can result in costly comebacks.

Aging Plastic Intake Components May Cause Leaks

BMW valve covers and intake manifolds made of plastic are susceptible to warpage and gasket failure.

Other Posts

Five Spark Plug Service And Replacement Tips

Most articles will tell you to use a torque wrench, but they never explain why.

10 Alternative Uses For A Smoke Machine

Don’t limit yourself to just checking emissions controls – use your smoke machine to check numerous vehicle systems.

Volvo Engine Service

There are many combinations for the Volvo modular engine.

Improving Turbocharger Longevity

It is estimated that by 2022, 50% or more of vehicles sold in the U.S. will have one or more turbochargers under the hood.