January 31, 2010

TF-60SN Accumulator Body Caution

Tory Royce

So you've got it figured out. The cause of thatTF-60SNconverter issue you've been fighting has finally been narrowed down to wear in the lockup clutch control bore. Well, before you reach for that pot of gold at the end of the rainbow, here are a couple of things you should know.

实际上有两种不同版本的TF60-SN蓄能器体在循环中。Figure 1显示了两个铸件之间的视觉差异gs.



这是标识您拥有的哪种风格的最简单方法。Figure 2shows that although it is not as obvious, there is a difference between the parts used in the two versions. Look closely at the spring end of the valve.

好消息是锁定离合器控制孔的相同阀门维修套件可用于修复任何一个版本。捕获是:由于钻孔长度差异,安装过程不一样。

Why is the install procedure so critical? If the late body install procedure is used in an early body, the mistake will be frustrating but obvious; it will not all fit in the bore. At least you will know you have a problem. However, if an early body install procedure is used in a late body, you will be able to install the parts, re-assemble the unit and reinstall it into the vehicle. You may not discover that you do not have lockup until the road test.


Figures 3and4show the line up difference between the two installation procedures. Early style accumulator bodies, having the shorter valve body bore length, use the valve/sleeve, spring, and plunger/sleeve combination. Later style bodies, due to their longer bore length, use all the same components plus a valve stem cap and a spacer, to make up the length difference.

请记住,TF-60SN是AW指定。您可能会在各种名称下看到并识别本机。VW 09G, 09K and 09Mare common to many of you, with 09G often used to refer to any of the three. BMW/Mini builders know this unit as the 6F21WA. Regardless of the label or designation, the other thing you should remember about this unit is that the accumulator body is extremely small and not easily secured for reaming. You should purchase or fabricate an adapter plate that will allow you to securely mount and accurately position this valvebody section for reaming. (Figure 5).

Once you have identified and used the appropriate installation procedure, you will be on your way to that pot of gold and a happy customer.

Sonnax would like to thank Valve Body Xpress for bringing this issue to our attention and working with us to solve this problem.

Tory Royce is a Sonnax Technical Support Specialist and a member of the SonnaxTASC Force®(Technical Automotive Specialties Committee), a group of recognized industry technical specialists, transmission rebuilders and Sonnax Industries Inc. technicians.

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