Unknown Author "Troubleshooting Engine and System Noise" Installation News December 1991: 53-58.
https://farm8.staticflickr.com/7876/...ff04d3d6_b.jpg
https://farm8.staticflickr.com/7895/...4d4491cb_b.jpg
https://farm8.staticflickr.com/7818/...86daeb28_b.jpg
