Henny Penny 520 Service Manual page 46

Place power switch in the OFF position, shut off power
at the fuse or breaker box. Failure to do so could result
in electrical shock.
I
1. Remove retaining ring from hinge pin.
2. Using a punch and hammer, drive hinge pin out from
spring.
3. Remove old spring.
4. Remove stops from cam.
oosen 318" nuts from rear shroud, remove nut from
pressure gauge, and remove shroud.