Service And Repair
Replacing the Air Purge Screw
47
Figure 40. Reorienting The Air Purge Screw’s Hitch Pin
Figure 41. Hitch Pin In Position To Install Air Purge Screw
9.
When the screw is turned clockwise all the way down, but not tight, use the forefinger of one hand to push the
hitch pin up as shown in diagram 1 of Figure 42.
10. While holding the hitch pin up with the forefinger of one hand, place the gloved forefinger of your other hand
against the end of the pin as shown in diagram 2 of Figure 42.
11. Push the end of the pin with the gloved forefinger until it snaps into the retaining position as shown in diagram
3 of Figure 42.
Hitch pin in retaining position
Hitch pin ready for screw removal
Use your forefinger
to push the pin all the
way in
Upper o-ring (-015 [0.551'' ID x 0.070'' wide])
Middle o-ring (-014 [0.489'' ID x 0.070'' wide])
Lower o-ring (-903 [0.301'' ID x 0.064'' wide])