G 3500 1 Ton Van V8-454 7.4L (1989)
Figure 2
2.
To verify that the spacer plate is peening evenly and the ball is sealing correctly, seat the check-ball on the spacer plate. Shine a beam of light on the
opposite side and inspect for light between the spacer plate and check-ball (see figure 2). No trace of light should be present. If light can be seen, a
proper seal does not exist, and the spacer plate must be replaced.
Service Manual Reference:
Refer to the HYDRA-MATIC Automatic Transmission Diagnosis section of your service manual or unit repair manual for proper check-ball locations
and functions.