- Exhaust Products
- Ford Industrial
- Twin Disc, Rockford & AutoClutch
- Hurth & ZF Marine Gear
- Engine Governors
- Tech Tips & Video
- Free Tech Tips
- #128: Avoiding an Early Failure with a Deutz 1011 / 2011 Rebuilt
- #191: How to Upgrade an AutoClutch PTO
- #170: All You Need to Know to Install a Deutz, Perkins or Deere Crankshaft
- #171: Deutz Head Gaskets: Composite or MLS?
- #172: A Five Point Checklist on Deutz Head Bolts and Torque Values
- #173: How to Remove a Perkins 4.108 Injection Pump in Two Easy Steps
- #174: Five Points to Keep in Mind When Overhauling a Deutz 1011 or Deutz 2011 Diesel Engine
- #175: Deutz 2011 Timing Belts; How to Remove the Plastic Cover on the Deutz 2011 Timing Cover When Changing a 2011 Belt
- #176: 120 Series Electric Actuator
- #177: Crankshaft Installation Tips
- #178: Deutz 1012/1013 Cooling System Service and Maintinence
- #179: Dr. Diesel's Turbocharger Installation Manual
- #180: EPA Tier 3 Deutz Engine Specs
- #181: Exhaust Purifier Installation Procedures
- #182: Hoof/Pierce Governor Instructional Guide
- #183: How To Install A Lucas CAV/Delphi Pump
- #184: How to Break-In a Remanufactured Deutz Engine
- #185: Installation Instructions for Complete Distributors (View PDF)
- #186: Isuzu Industrial Diesel Engine Serial Number Location
- #187: Notes on Installing Twin Disc/Rockford Power Takeoffs
- #188: Perkins Engine Number and Location Guide
- #189: Perkins Marine Power 4.108(M)
- #190: Turbocharger Installation Instructions
- Ask Dr. Diesel
- Free Tech Tips
- Company Info
- About Us
- FAQs & Policies
- Industry Links
- Contact Us
Identifying and Maintaining the Ford C6 Transmission as Used in Industrial Applications
Helpful guide in identifying and maintaining your transmission - Tech Tip #85
This Dr Diesel Tech Tip is concerned with identifying and maintaining the Ford C6 transmission as used in industrial applications. Your comments are welcome.
The Ford C6 transmission has been in production since 1966. Over the last 40 years the C6 Ford transmission has been used in a variety of industrial applications including in Harlan, Tiger, Tug, Clark, Northwestern airport tugs and also in rough terrain forklifts manufactured by Lull and others. Various engines including Perkins 4236 and Cummins B Series diesels, GM industrial gas engines, as well as Ford industrial engines have been used with this transmission. The Ford C6 transmission as used in industrial applications is very rugged and long lasting.
How do I identify my C6 industrial? Ford C6 industrial transmissions are 33.5" long, including the tail shaft with a transmission mount is about 22" from the front of the bellhousing. All C6 transmissions will have a 17 bolt square oil pan that has a sharp jog in the right rear of the pan. A vacuum modulator installs in the valve body located aboe this job.
Additional differences include if it is behind a gas or diesel engine (the ratios are different), if it has an emergency brake, the depth of the oil pan, and if a two or three speed unit.
Which fluid should I use? Early C6 industrial transmissions used Type FA transmission fluid.
Beginning in 1997, later versions of the Ford C6 transmission used Dexron fluid. The dipstick will either reference a FA fluid type or an M2C138-CJ fluid.
How much fluid? Part of the rugged nature of the C6 is its large fluid capacity. Most Ford C6 industrial transmissions use 24 pints of fluid including the torque convertor. To ensure long life Foley ships all of our factory remanufactured C6 industrials with 24 pints of Mobil1 synthetic fluid. (See our specials page for our ongoing special on factory remanufactured C6s.) Dr Diesel fought hard for this. Using $300 of synthetic transmission fluid in your C6 transmission may seem like over-kill but it will greatly prolong the service life of your transmission in a difficult application such as an airport tug or forklift. Afterall, cool fluid is happy fluid! (See our Foley Tech Tip #74, Remote Oil Filter Considerations.)
Which flex plate? Its important to use the flex plate supplied with the unit. Over the years Ford has used two different flex platesk, both with 164 teeth. The early C6 applications used a 22 ounce, 11 7/16" flex plate. Later versions used 50 ounce flex plate. Most C6 transmissions used behind the Ford 460 industrial, also referred to as the Ford LSG875i engine, (see our Dr Diesel Tech Tip #94, Ford 460 Industrial Engines, Some Considerations) used a Ford flex plate with a Ford OEM PN of D9TZ-6375A.
Want More Info? We have Ford Industrial C6 Workshop Manuals available which we ship with all of our remanufactured Ford C6 transmissions. Please call to order one if you would like more info.
We take tech support seriously!
We hope that you will find this Tech Tip helpful. We believe that Tech Support matters and welcome your comments or suggestions.
Please email Dr. Diesel™ using our contact form or call us at 800.233.6539.