Daewoo D35S-2, Руководство по эксплуатации и техническому обслуживанию

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Maintenance Section
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Lift Chains - Test, Check, Adjust
Lift Chain Wear Test
Inspect the part of the chain that is normally operated
over the cross head roller. When the chain bends over
the roller, the movement of the parts against each other
causes wears.
Inspect to be sure that chain link pins do not extend
outside of the link hole. If any single link pin is extended
beyond its connecting corresponding link, it should be
suspected of being broken inside of its link hole. Lift
chains are required to check for wear about every 1,000
service hours or 6 months.
Chain wear test is a measurement of wear of the chain
links and pins. Take the following steps to check chain
wear.
1. Lift the mast and carriage enough for getting tension
on lift chains.
Typical example
2. Measure precisely ten links of chain distance at the
center of pins in millimeter.
3.
Calculate chain wear rate*.
4.
If the chain wear rate is 2% or more, replace the lift
chain.
*Chain wear rate (%)
= Actual measurement - Pitch** X 10 X 100
Pitch** X 10
**Chain Pitch for D35/40/45S-2, D40/45/50SC-2, D50C-
2, G35/40/45S-2, G40/45/50SC-2 = 25.40 mm(1.0 in)
Check for Equal Tension
Typical example
Lift the carriage and the mast high enough for getting
tension on lift chains. Check the chains, and make sure
the tension is the same. Lift chains are required to check
for equal tension about every 1,000 service hours or 6
months.
WARNING
Personal injury can be caused by sudden
movement of the mast and carriage.
Keep hands and feet clear of any parts that can
move.
Lift Chain Adjustment
Typical example for carriage equal tension
If the tension is not the same on both chains, take the
procedure as follows.
NOTE: If carriage height is not correct, make
adjustments by following procedures.