Henny Penny 500 Technical Manual page 91

2-14. PRESSURE
REGULATION/
EXHAUST (Continued)
305
The acme nut must be changed when there is excessive play
and movement between the spindle and the acme nut.
9. Using a nylon tape type wrench unthread the limit stop
collar from the acme nut.
Step 9
10. Gently tap the acme nut from the center crossbar. Inspect
the acme nut for thread damage. If the threads are thin
and sharp or worn, replace with a new acme nut.
Step 10
Step 11
11. Use an Allen wrench and ratchet to remove the retainer.
Step 11
Model 500/600
2-45