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4.5 Secondary Air Tube Replacement
(see Figure 4.3)
1. Remove cotter pin at RH end of tube.
2. Slide tube to left and lower tube end below RH plenum.
3. Slide tube to right to remove.
4. Reassemble in reverse order using a new cotter pin. The cotter pin is a hammerlock style and
locks into place by hitting the head sharply with a hammer.
5. Note that any tube can be replaced without disturbing the baffle.
Important Notes:
The air tubes are identified for placement as follows:
Front to back: Tube No. 1 41 Holes of .156” diameter
Tube No. 2 81 Holes of .109” diameter
Tube No. 3 81 Holes of .109” diameter