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How to troubleshoot Eaton Fuller transmission air system?

How to troubleshoot Eaton Fuller transmission air system?

See the table below for troubleshooting steps and possible solutions: Remove lower skirt on shift knob. Check for leaking fitting at the shift knob. Leak found. Check air lines to make sure all lines are connected to the proper ports on the shift knob.

How to troubleshoot an Eaton heavy duty transmission?

Guide to servicing and repairing Eaton Fuller heavy-duty truck transmission, assistance locating the issue of transmission trouble, analyze the cause and make necessary repairs for 7, 8, 9, 10, 13, 15 and 18 speed Eaton transmissions. For more in-depth assistance refer to your transmission model service manual or give us a call at 877-776-4600.

Where does air come from in a Fuller transmission?

Confirm that air is leaking from the exhaust port on the slave valve and not a fitting or air line. Air is leaking from fitting or air line. Repair or replace fitting or air line. Air is definitely leaking from slave valve exhaust port. Move range selector down to select low range. Air is flowing from high range supply port on range cylinder.

How does the slave valve work on an Eaton Fuller?

The slave valve will direct air pressure through the low range 1/4″ rubber hose to the range cylinder to shift the range. There will be a brief burst of air at the slave valve as the high range side of the range piston exhausts. Likewise, when high range is selected, the air pressure in the “P” will be exhausted at the shift knob.

See the table below for troubleshooting steps and possible solutions: Remove lower skirt on shift knob. Check for leaking fitting at the shift knob. Leak found. Check air lines to make sure all lines are connected to the proper ports on the shift knob.

The slave valve will direct air pressure through the low range 1/4″ rubber hose to the range cylinder to shift the range. There will be a brief burst of air at the slave valve as the high range side of the range piston exhausts. Likewise, when high range is selected, the air pressure in the “P” will be exhausted at the shift knob.

Confirm that air is leaking from the exhaust port on the slave valve and not a fitting or air line. Air is leaking from fitting or air line. Repair or replace fitting or air line. Air is definitely leaking from slave valve exhaust port. Move range selector down to select low range. Air is flowing from high range supply port on range cylinder.

What should air pressure be in Eaton transmission?

Exhaust all air pressure from the system before removing air filter/regulator or combination cylinder cover. Note: During all testing, the vehicle air pressure must be greater than 90 PSI (620 kPa).

What to do when your transmission line exhausts?

WARNING: Use care when removing air lines or checking for air flow from disconnected lines. High-pressure air may exhaust suddenly. Wear safety glasses. Exhaust all air pressure from the system before removing air filter/regulator or combination cylinder cover.

Why does the slave valve exhaust air during a range shift?

A momentary exhaust of air at the slave valve occurs during a range shift. The air from the low side of the range cylinder is exhausted as air pressure is applied to the high range side. Likewise, air from the high range side of the piston is exhausted as air pressure is applied to the low range side.

How long did it take to develop the Volvo FH?

The development of FH in what it appeared to be a clean sheet of paper design took seven long years. The development of the all-new design 12 litre engine with its overhead camshaft and electronic unit injectors technology placed Volvo among the world’s leading engine designers.

What causes premature failure of air brake system?

Dirt is the greatest cause of premature air valve failure. 2.) If pipe dope is used on fittings, use it sparingly. This can also get into the unit and cause a failure. 3.) When installing fittings into a remanufactured valve, do not over tighten or it will crack the casting.

What’s the difference between Volvo D13A and FH?

D13A featured closed-crankcase ventilation and also included a new type of unit injector (UI) E3 from Delphi. As a part of makeover Volvo has also removed its naming scheme and decided to drop engine size in the model name so the models are known from now as FH only.

What’s the difference between the FH and FH cabs?

The new FH cab was a logical progression from, for its days spacious but boxy F series cab to more aerodynamically efficient, with much-improved ergonomics and much better seating unit while reducing the overall weight of the cab by almost 30%.

Can a Mack transmission fall on a truck?

If you do plan on doing the synchros in the truck you shouldn’t have to worry about the countershafts falling on you like with a Mack transmission if you dont have the retaining plate in. Because everything comes out with the back box on a fuller.

What causes a slipout on an Eaton Fuller transmission?

Under the right conditions, slipout will result. Some of these conditions are: Transmission mounted eccentrically with engine flywheel pilot. Excessive gear clashing which shortens clutching teeth. Incorrect adjustment of remote shift control linkage resulting in partial engagement. Also check for loose connections and worn bushings.

What are the problems with an Eaton Fuller transmission?

Oil level too low or too high, wrong type of oil, or an operating angle of more than 12 degrees. 2. Operating consistently under 20 MPH. 3. High engine RPM. 4. Restricted air flow around transmission, due to the transmission being “boxed in” by frame rails, deck lids, fuel tanks and mounting brackets, or by a large bumper assembly.

If you do plan on doing the synchros in the truck you shouldn’t have to worry about the countershafts falling on you like with a Mack transmission if you dont have the retaining plate in. Because everything comes out with the back box on a fuller.

Where does the shift lever go on an Eaton 8ll?

Main shaft end play, rear main shaft support bearing or input shaft bearing allowing 3rd and 4th sliding clutch to move, does the shift lever move fore and aft when throttling up or down while moving.

Can a Mack 2060 be run as an 8ll?

Beacause an eaton fuller 8LL is to be shifted as an eight speed (similar to your pete). But a mack 2060,70,80 can be ran like a five.. The eaton fuller 8LL trans should like low rpm better…

Is there any warranty on an Eaton Fuller?

However, Eaton makes no expressed or implied warranty or representation based on the enclosed information. This symbol is used throughout this manual to call attention to procedures where carelessness or failure to follow specific instructions may result in personal injury and/or component damage.

Why is my Eaton Fuller transmission leaking air?

Air lines are connected to the proper ports. B.) Reversal of the H/L and “SP” lines will result in a constant leak when the splitter button is rearward. Move the range selector lever down to low range. Check for constant air flow from the exhaust “E” port. Constant air flow from the “E” port. No air flow from “E” port.

Where is the Air Line on an Eaton Fuller transmission?

Remove range cylinder cover andrepair leaking range piston or piston seal. After repair, check for proper range operation. Remove the 1/4″ I.D. rubber air line at the high range supply port on the range cylinder. Feel for air flow from the open port on the range cylinder.

Under the right conditions, slipout will result. Some of these conditions are: Transmission mounted eccentrically with engine flywheel pilot. Excessive gear clashing which shortens clutching teeth. Incorrect adjustment of remote shift control linkage resulting in partial engagement. Also check for loose connections and worn bushings.

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Ruth Doyle