Sonnax has provided the following guide on critical wear areas and vacuum test locations for the GM 10L series and the Ford 10R series. Technicans working on these models should find the following four pages helpful.
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Klynt Baker, the recently appointed president of Sonnax and Rostra, says that his responsibilities aren’t two aftermarket companies owned by Marmon Holdings. Baker says that Sonnax and Rostra have integrated their operations to the point that there are indeed two brands encompassed in a single business. The Marmon Automotive Aftermarket Group is a subsidiary of
Klynt Baker, the recently appointed president of Sonnax and Rostra, says that his responsibilities aren’t two aftermarket companies owned by Marmon Holdings. Baker says that Sonnax and Rostra have integrated their operations to the point that there are indeed two brands encompassed in a single business.
The Marmon Automotive Aftermarket Group is a subsidiary of Berkshire Hathaway. In the years since the 2017 and 2018 acquisitions, Sonnax and Rostra have woven themselves into a single company that serves the market with two well-known brands.
Below are three examples of trucks that came into transmission shops, yet either did not have a transmission problem, or had a simpler issue than it originally seemed. Read on for the stories. Related Articles – CVT maintenance basics – Mercedes-Benz 722.9 no forward movement after overhaul – Land Rover LR3 ZF6HP26 no start after
On the maintenance side, a continuously variable transmission (CVT) requires more or the same frequency of fluid and filter changes as a conventional automatic transmission, and many of the basic procedures are the same. On the diagnostic side, a CVT transmission is less complicated internally than a six- or nine-speed transmission. Related Articles – Infiniti
The complaint A 2007 Mercedes-Benz CLS550 with the 722.9 transmission has an after-overhaul complaint of no forward movement. Related Articles – The 6R140 torque converter: Common fault codes and how to rebuild – Shift Pointers: Getting the 10R80 shaft – Volkswagen dual clutch transmission and direct shift gearbox: What you need to know The cause
The complaint A 2006 Land Rover LR3 equipped with the ZF6HP26 transmission has a post-overhaul complaint of a no-start condition. Part of the transmission overhaul process included the replacement of the mechatronic unit. Related Articles – Diagnostic tips for the Ford 6F35 – Diving into electrical testing and wiring with the 948TE – Park Wiggle
Sonnax has introduced a new drop-in converter limit valve kit for Ford 2011 and later 6R140 transmissions. Sonnax says this kit can help users recover hydraulic control and renew TCC performance in these transmissions. This kit (part no. 126740-25K) features a drop-in sleeve/valve assembly to compensate for wear and excess clearance, including in worn bores.
Sonnax has released a new drop-in TCC boost valve kit for Subaru TR580 transmissions. Sonnax says users can restore hydraulic integrity to the TCC circuit with tightly controlled tolerances in these transmissions by installing this kit (part no. 823740-12K). This kit includes a steel valve that combats premature wear and wear-resistant sleeves, the company says.
Sonnax introduced a new low/reverse sprag rebuild kit for GM 6L80 and 6L90 transmissions. The company says users can use this kit to replace the element, retainer plate, end caps and snap ring in these transmissions without buying an entire sprag assembly. Related Articles – Freudenberg-NOK adds new line of TransTec bonded pistons – Sonnax
Sonnax highlights its heavy-duty intermediate clutch backing plates for GM 4L80-E, 4L85-E and TH400 transmissions. Both backing plates are compatible with OE and aftermarket cases, the company says. Related Articles – TransTec introduces new Ford 8F35 overhaul kits – TransGo introduces new valve body repair kit for GM 8L series – Alto introduces overdrive sun
