A/T - THM 200C Servicing Converter Clutch Apply Screen
TSB 85-46SUBJECT: THM 200C
On the 200 C pump body, there is a small screen, that is similar to a THM 400 governor screen. This screen is located in the converter apply signal passage, under a cup plug.
When servicing the 200 C, be sure to inspect the screen and cup plug for dirt, especially after running the body through a washer. To service this unit properly, follow these steps:
Figure 1. Remove cup plug using a modified # 4 easy-out.
Figure 2. Remove screen and clean or replace. (If the screen is torn, or bad, you can replace it with a 400 governor filter.
Figure 3. Using a 3/8" rod, drive the cup plug (# 8630529) back in, being careful not to mushroom the end.
Make sure that the orifice in the cup plug is clear, and that if you have changed pump bodies, make sure that the cup plug has an orifice.
If the screen becomes plugged, or the orifice is missing, or plugged, you will get "erratic", or "no" converter clutch apply.