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49668501 Rev. D Radial 8, 88, HT Feeders (Dispensing Heads)
This document supports Dual, Triple, and Quad Span Feeder Assemblies (Dispensing Heads)
3. Retract the air cylinder with 80 psi. Use a feeler gauge to check for a
minimum clearance of .010 inch (0,25mm) between the ratchet dog and
the housing post.
NOTE
Rotate the cam wheel counterclockwise to eliminate any free play
between the link and the drive pin when making the measurement.
4. Mark the tooth that is currently engaged with the ratchet dog and
record the clearance between the ratchet dog and the housing post.
Index the ratchet wheel and measure and record the clearance for each
tooth.
NOTE
Because of the tolerances allowed on the ratchet wheel, the clearance
has to be checked on each tooth. The tooth which has the smallest
clearance between the ratchet dog and the housing post should be used
for making the adjustment and is usually marked at the time of
assembly.
5. To adjust the clearance, loosen the locking set screw that secures the
return stroke adjusting screw.
6. Loosen the locking set screw that secures the anti-back-up dog
eccentric. Rotate the eccentric fully counterclockwise. Turn the set
screw that secures the eccentric in until it bottoms out on the eccentric,
but do not tighten.
NOTE
The anti-backup dog adjustment must be performed after the return
stroke stop adjustment.
7. Turn the return stroke stop adjusting screw until there is 0.010 inch
(0,25mm) clearance between the ratchet dog and the housing post.
Clearance .010 inch
(0,25mm)
Housing Post
Eccentric
Locking set
screw
Anti-backup Dog
Ratchet Wheel
Ratchet Dog
Cam Unit
Return Stroke
Adjusting screw
Turning this screw inward
increases the gap
Locking
set screw
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