General Maintenance
157
Model 944E
Origin 3/04
Elongation - Extend Chain Only
When the original length (3) of 12.00" (305 mm) per foot of new chain has
elongated from wear to a length (4) of 12.36" (313 mm), the chain must be
discarded and replaced.
It is important to measure the chain in the section that moves over the sheaves
because it receives the most frequent articulation. Measuring the chain near its
clevis terminals could give an inaccurate reading. The ends of the chains, near
the clevis terminal, will not have flexed as frequently, if at all, as nearer the
middle of the chains.
Measure across a span of 13 pins at the center of the extend chain. Measure
from pin center to pin center. Because the retract chain is inside the boom you
will not be able to measure the chain. Refer to the Service Manual for inspection
of the retract chain.
The maximum measurement allowed is 12.36" (313 mm). If the measurement is
more than 12.36" (313 mm), the chain must be replaced.
OU0900
3
4
Summary of Contents for 0160003882
Page 105: ...Emergency Operations 103 Model 944E Origin 3 04 OU1060 4 1 2 3 Courtesy of Crane Market...
Page 184: ...Index 182 Model 944E Origin 3 04 This Page Intentionally Left Blank Courtesy of Crane Market...
Page 196: ...Accident Prevention Tags OS2180 8990401 Origin 5 00 Courtesy of Crane Market...
Page 198: ...Courtesy of Crane Market...
Page 199: ...Courtesy of Crane Market...
