KNIGHT SMART CART OPERATION MANUAL
SECTION 4
MAINTENANCE
19
5. Measure the Chain:
The chain should be cleaned and measured in its
location while placed under approximately 1% of the
minimum breaking load. If a set of check weights is
not available, it is sufficient for the chain to be
tensioned by the weight of the carriage and lift assist.
Identify the section of the chain that regularly runs over
the pulley as this part of the chain is most susceptible
to wear. Measurements must then be made in at least
3 separate locations on this section.
Place the ‘V’ jaw of the chain gauge over the first pin of
one of the selected sections and then extend the slide
until the other ‘V’ jaw reaches the final pin. The final
pin will be the one that appeared in the ‘Measure over
pins’ window as previously determined in step 3.
6. Read off the Percentage:
Check the ‘Percentage Wear’ windows. A percentage
will appear in 0.25% (¼%) increments. If the chain
has elongated by 2% or more, the warning window will
be filled with red and necessary action must be taken.
E. Lubricating the Servo Arm Roller Chain after replacement
•
After changing the roller chain, before a test load is lifted and before the
hoist is put into operation as well as during normal operation when no
load is attached, the chain link contact areas must be lubricated with
Demag gear grease, part no. 665 009 44.
•
The chain link contact areas must be re-lubricated appropriately –
after being cleaned – at intervals depending on the service and load
conditions.
•
Cut off the tip of the grease tube and inject grease into the chain’s links
by compressing the tube while you run the chain to its end positions to
ensure complete and even lubrication of the chain.
Warning
Window
