Cascade Viewmast II 30C Triple Installation Instructions Manual page 11

MEASURING CHAIN STRETCH
If the hoist chains stretch beyond the recommended
amount, they should be replaced in pairs. Charn stretch
can be measured with the chain wear scale (661923)
included with the Customer User Krt.
Measure the
chains as shown in Figure 19according to the instructrons
printed on the chain wear scale, without a load on the
carriage.
a. To check the carriage hoist chains, raise the carriage a
few inches off the ground to put tension on the chains.
b. To check the hoist chains, the mast must be extended
sufficiently to expose the chains.
NEW CHAIN
Figure 19. Checking Chain Stretch
STRETCHED CHAIN
500 Hour Inspection
After each 500 hours of lift truck operation, in addition to the
daily and 100 hour inspection
1. Check each pair of hoist chains for wear and stretch using
the chain wear scale (661923).
2. Check the clearances for the load rollers. Each pair of
load rollers on the uprrghts and the carriage should be
shimmed so that a total clearance no greater than 0.030 inch
occurs at the tightest pornt throughout the travel of the
member. See Figure 20. Thrs clearance will be achieved if
each pair of rollers are shimmed the maxrmum amount that
still permits assembly without mechanical assistance. Refer
to the Service Manual (Triple-Lift: form 5140; Quad-Lift:
form 5213) for disassembly and assembly procedures.
Install a pair of load rollers and use an equal number of
shims on each side of the assembly (within one shim), A
standard shim (631881) is 0.030 inch thick.
LOAD
ROLLERS
I-
MEASURE WHERE
XXX IS SHOWN
A1 + A2 = .030" max.
\
LOAD
ROLLERS
Measurements typical for each pair of rollers.
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