CEAST 9340 - Instructions for Use and Maintenance 7510.000MN1r ed. 1 rev. 1 - Page 119
9.8 VERIFYING THE GEARING CHAIN TIGHTENING
Authorized Personnel: MECHANICS
a) Open the turret door.
b) Install the standard striker holder without combinable weights or the light striker holder
with all combinable weights on the instrument.
c) Move the striker holder to quota Z=1200 mm using the command “Move to height”
from the “Service” menu.
d) Place the end of a dynamometer (see figure) in the middle of the chain (right side)
and stress it applying a load of 1 kgf (9.81 N).
e) The deflection of the chain must be less than 8-10 mm, otherwise extend the chain.
f) Loosen the screws of the ratiomotor support (see figure) push downward the ratiomotor
and tighten the screws.
If the screws are in contact with the slot ends and it is not possible to adjust the chain,
shorten the chain by removing a link.
g) Proceed with the instructions of steps d), e) and f) until to measure the correct deflection.
Dynamometer
Gearing chain
Direction of the force
applied on the chain
by dynamometer
Note:- The gearing chain needs to be checked every 5000 releasing cycles and/or after
repeated tests in which the striker is jammed in the specimen and the lifter motor
subjected to a traction effort stops repeatedly.
Ratiomotor
Screw (x4)
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