Jasper Engines & Transmissions, the nation’s leader in remanufactured drivetrain components, offers the following transmission to its remanufactured lineup.

The Chrysler 68RFE rear-wheel drive transmission can be found in 2007-present versions of RAM 2500/3500 trucks equipped with a 6.7L diesel engine.

JASPER has made improvements to this unit, most significantly to the UD and OD clutch. Extra plates have been added in both clutches to increase their torque holding capacity. The clutch drum has been modified to improve oil circulation and reduce the chance of heat buildup.

New pump bushings are 100% installed on the JASPER 68RFE. This reduces the chance of galling on the pump cover.

Every JASPER remanufactured transmission is subjected to strict, high-quality processes:

• Disassembly, meticulous inspection and cleaning of components.
• All new and remanufactured parts are carefully inspected for correct tolerances to assure dependability.
• JASPER’s research and product development ensures inherent problems in OEM design are corrected.
• Dynamometer testing of every domestic automatic transmission simulates in-vehicle operation to assure trouble-free product results.
• An available Premium Service Plan offers customers even greater value.

Each transmission is covered by JASPER’s 3-Year/100,000 mile nationwide transferable parts and labor warranty. Full warranty disclosure is available on our website or upon request.

For more information on the remanufactured transmissions of Jasper Engines & Transmissions, please call 1-800-827-7455.

Jasper Engines & Transmissions, the nation’s leader in remanufactured drivetrain components, offers the following transmission to its remanufactured lineup. The Ford/Aisin AF21, also known as the TF-81SC front-wheel drive transmission, can be found in the following 2005-present vehicles:

• Ford Five Hundred
• Ford Fusion
• Mercury Montego
• Mercury Zephyr
• Lincoln MKZ
• Mazda 3
• Mazda 6

JASPER’s most significant upgrades to the AF21 involve seven problem areas within the valve body. These areas have lead to valve body failures causing harsh shifts, burned clutches and forcing the transmission into “fail safe mode”. These areas are 100% reamed and upgraded to hard-coat anodized valves that are wear resistant and have more sealing contact area to minimize leakage. These updated valves include:

• B1 Clutch Control
• C1 Clutch Control
• C2 Clutch Control
• C3 Clutch Control
• 2 Solenoid Modulators
• PR/Boost

In addition, the TCC and secondary regulator valve body sections are reamed and upgraded to hard-coat anodized valves that are wear resistant and have more sealing contact area to minimize leakage, TCC slip and overheated fluid.

The solenoid bushings of the AF21 are 100% replaced. PTFE material within the solenoid bushings absorb small contaminants, and causes the bushing clearance to diminish, resulting in harsh shifting.

JASPER also addressed various shift complaints caused by worn accumulator bores within the AF21. The accumulator pistons are replaced with upgraded, anodized aluminum with annular grooves that improve piston centering, preventing wear and thermal expansion-related leakage.

Every JASPER remanufactured transmission is subjected to strict, high-quality processes:

• Disassembly, meticulous inspection and cleaning of components.
• All new and remanufactured parts are carefully inspected for correct tolerances to assure dependability.
• JASPER’s research and product development ensures inherent problems in OEM design are corrected.
• Dynamometer testing of every domestic automatic transmission simulates in-vehicle operation to assure trouble-free product results.
• An available Premium Service Plan offers customers even greater value.

Each transmission is covered by JASPER’s 3-Year/100,000 mile nationwide transferable parts and labor warranty. Full warranty disclosure is available on our web site or upon request.

For more information on the remanufactured transmissions of Jasper Engines & Transmissions, please call 1-800-827-7455.

Bob Goodman, of the Jasper Authentic Custom Drivetrain Transmission Department, poses with the finished Buick transmission.

The title of this story is a little misleading… because nothing is new when it comes to the Jasper Authentic Custom Drivetrains division. In fact, it’s all old.

Case in point: the Dynaflow “Dual Path Turbine Drive” two-speed automatic. This transmission was built from 1961 to 1963 and was used in the Buick Special. The Special was Buick’s answer to customers shopping for a smaller car, as opposed to the heavy, oversized cars produced in the day.

The concept of the car was light and fuel efficient, but the engineering of the transmission was unique. It was the perfect project for 22-year JASPER Associate, Bob Goodman, now with the Transmission Department of Jasper Authentic Custom Drivetrains. Bob has a special knack for how transmissions work.

“In terms of the philosophy behind how clutches and pumps work in most transmissions, there are inherent characteristics that apply from one transmission to another,” says Goodman. “This transmission was different from all of them, and that’s probably why it had such a short production life.” “The design of the clutch packs is quite unique… they don’t apply with pistons alone, but with a fulcrum and lever,” added Goodman. “It’s an air-cooled transmission, with cooling vanes on the torque converter to dissipate heat.”

Other engineering oddities include the “skillet-type” pan cover, held in place with a single bolt through its center. “The governor on this transmission has a big pivot lever in the back and looks like weights off an old steam engine on the output shaft that would generate a fulcrum effect,” says Goodman. “It would push in a valve on the valve body to generate governor pressure. It’s very abstract in terms of the thought process behind the way it was designed.”

“Most importantly,” added Goodman, “Due to the transmission’s short production life, along with its design issues, it is very hard to find parts. This is not a cheap unit!” But that’s the point of Jasper Authentic Custom Drivetrains. These Associates specialize in remanufacturing engines and transmissions that are currently no longer offered, or have been turned away in the past because they did not fit into a production remanufacturing system.

“One type of client that would benefit from our division, for instance, is the individual restoring a ‘69 Corvette who wants his or her serial numbers to match, and wants their engine to be hand-built by experienced professionals,” says Alex Ernst, Jasper Authentic Group Leader.

“With Jasper Authentic Custom Drivetrains, we spend extra time remanufacturing an engine or transmission,” Ernst added. “We give the customer that hands-on, hand-built treatment that our target customer base is looking for.” In addition, Jasper Authentic Custom Drivetrains provides some extras for the enthusiast. “Customers can opt to have their engine dynamometer tested, in addition to the live-run test we perform on most applications,” said Ernst. “And we can provide the customer with documentation of the remanufacturing process. With a login name and password, they will be able to go to our web site and check the daily progress of their engine or transmission.”

“If a customer opts for the documentation package, Jasper Authentic Custom Drivetrains will provide a binder and CD with pictures & specifications,” added Ernst. “Now the customer can archive the documentation for their own records, or use it to authenticate their unit as they show their vehicle.”

(Above left) This little clip holds the boost valve spring in place on the valve body. (Above right) The clip is made of stamped steel and will break at one of the weak bend points.

Have there been times when a Dodge truck comes to your shop with no forward or reverse movement? If so, that problem could be caused by the boost valve spring retaining clip found in the valve body.

“This little clip is made from stamped steel and has a weak point in the bends,” says Craig Leuck, JASPER Transmission Division Manager. “Over time, the clip will break at one of the weak points. This allows the boost valve to move out of the valve body, losing all line pressure to the transmission.”

JASPER installs a thicker boost valve spring retaining clip in all Dodge valve bodies to compensate for the weak points found in the original clip.

Jasper Engines & Transmissions, the nation’s leader in remanufactured products, has added the following late-model transmissions to its remanufactured line up.

The GM 6L80 and 6L90E 6-speed transmissions are available for the following 2007-2009 vehicles:

• Chevrolet Yukon Denali, Avalanche and Suburban
• GMC Sierra Denali

• Cadillac Escalade

• Chevrolet/GMC C/K 1500-3500 pickups

These transmissions are unique in that the transmission control module (TCM) is physically contained inside the transmission. “These control modules are vehicle identification number (VIN) specific and must be reprogrammed accordingly,” says James Corbin, JASPER Quality Systems and New Product Development Manager. “JASPER will ship these units already programmed per the vehicle VIN from the factory.”

Every JASPER remanufactured transmission is subjected to strict, high-quality processes…

• Disassembly, meticulous inspection and cleaning of components.

• All new and remanufactured parts are carefully inspected for correct tolerances to assure dependability.

• JASPER’s research and product development ensures inherent problems in OEM design are corrected.

• Dynamometer testing of domestic automatic transmissions simulates in-vehicle operation to assure trouble-free product results.
• An available Premium Service Plan that offers customers even greater value.

Each transmission is covered by JASPER’s 3-Year/100,000 mile nationwide transferable parts and labor warranty. Full warranty disclosure is available on our website or upon request.

For more information on the GM 6L80/90E and JASPER’s complete line of remanufactured transmissions, please call 1-800-827-7455.

Jasper Engines & Transmissions has made an update to the reverse servo of Ford 4R55E/5R55E transmissions produced between 1995 and 2008.

This update centers around the installation of a support plate over the reverse servo cover of the 4R55E/5R55E transmissions found in the Ford Ranger Pickup, Explorer SUV and the Aerostar Minivan. Drivers noticed the loss of reverse in these vehicles. The problem centered around the reverse servo gasket of these transmissions.

The gasket lies underneath the reverse servo cover. “These OE gaskets handle in excess of 250 psi when in use,” says Craig Leuck, JASPER Transmission Division Manager. “We have experience that aftermarket gaskets can hold about 425 psi. But we also know these transmissions will see pressures in excess of that.”

“JASPER’s Reverse Servo support plate allows the servo to handle in excess of 600 psi, well above what the servo will see, to make sure these transmissions can maintain reverse,” added Leuck.

The remanufactured 4R55E/5R55E transmissions are covered by JASPER’s 3-year/ 100,000 mile nationwide transferable warranty. Full warranty disclosure is available on our website or upon request

For more information on these and other remanufactured products of Jasper Engines & Transmissions, please call 800-827-7455.

Jasper Engines & Transmissions has made an update to the valve body of Ford 4R70W transmissions produced after 2001.

This update centers around the installation of a reinforcement plate where the forward clutch and direct clutch circuits meet. This allows extra clamping force between the separator plate and the gasket.

Initial problems would include the 4R70W slipping in third and fourth gear, which led to the burnout and failure of the direct clutch. “What we found was that a reinforcement plate was eliminated on valve bodies produced after 2001,” says Mark Balsmeyer, JASPER’s Crawford County Transmission Manager. “This caused a lack of clamping capability between the separator plate and gasket. The gasket would blow out, allow fluid to leak into another chamber and apply the direct clutch when it wasn’t supposed to be applied.”

JASPER drills and taps the valve body to accommodate the reinforcement plate, securing the separator plate to the gasket and eliminating the possibility of gasket failure in the affected area.

The remanufactured 4R70W transmission is covered by JASPER’s 3-year/100,000 mile nationwide transferable warranty. Full warranty disclosure is available on our website or upon request.

For more information on this and other remanufactured products of Jasper Engines & Transmissions, please call 800-827-7455.

Do you own a 2007-2009 Dodge/Chrysler with transmission problems? If so, we now offer the Chrysler 62TE transmission.  The 62TE can be found in the following vehicles: Pacifica, Sebring, Town & Country, Avenger, Grand Caravan and Journey. 

Through research and development, JASPER offers solutions to correct original design failures and with this transmission, it is no different.  The OEM designed metal sealing rings on the 62TE pump are replaced with solid Teflon rings to eliminate pump cross leaks.  Second and forth gear loss is also a common concern with this transmission.  Therefore, JASPER replaces every 2-4 clutch retaining snap ring with one of a heavier design, which prevents flexing and possible blowout.  Last but not least, every 62TE will receive a new cooler bypass valve to eliminate any chance of cooler system contamination or failure.

The 62TE is covered by JASPER’s 3-Year/100,000 mile nationwide transferable parts and labor warranty.

Jasper Engines & Transmissions has recognized a high-wear item on the rear-wheel drive Chrysler overdrive transmission cases.  And ironically enough, it’s the hole for the dipstick tube.

“When cores come in for remanufacturing, JASPER has found RWD Chrysler overdrive transmission cases with an enlarged hole for the dipstick tube,” says Craig Leuck, JASPER Transmission Division Manager.  “The hole becomes enlarged over time because the dipstick tube will move around inside the case.”

JASPER will use a special reaming tool to oversize the diameter of the dipstick tube hole.  A brass bushing is then driven into the case and held in place with sealant (see Figure 1).  “This update is made before the assembled transmission undergoes submersion testing in water, and checked for leaks,” added Leuck.

I would like to share a recent news release about the updated turbine half that we at JASPER provide on the GM 4L80E converter.  This is just another example of how JASPER remanufactured products can offer better quality and performance, giving you longer vehicle life.

The update centers around a common problem where the fins pull out of the turbine. “Every one of the fins are bent over and staked to the inside, and the outside, of the 4L80E turbine itself,” says Craig Leuck, JASPER Transmission Division Manager. “Over time, and vehicle use, the fins will get loose, pull themselves out of the turbine, and make metal to metal contact with the pump half of the converter.”

JASPER brazes 100% of the turbine fins with a paste and a heat treating process. “Every one of the fins is brazed on the inside, and the outside, of the converter,” added Leuck. “This ensures the fins stay in place, and there’s no metal to metal contact.”