Template Date: 1997_02_12
LEAF CHAIN MAINTENANCE
The maintenance procedure listed below will apply to
all three chain assemblies, the front double-chain
assembly, visible at the front of the boom, and the
single-chain assembly, located inside the rear of the
boom. To gain access the rear boom cover must be
removed.
STEP 7
With the boom fully extended, inspect the double
chains for cracked or broken plates, protruding or
turned pins or excessive wear.
STEP 8
With a tape measure, measure sixteen links of chain
that flexes over the sheaves. If the distance
measured is 12.375 inch (314.3 mm) or more, the
chain should be replaced. See Sections 704 and 705
of this manual for the correct single and double chain
replacement procedures.
IMPORTANT:
Do not repair or replace sections of
the single or double chain assembly; replace the
complete assembly.
STEP 9
G1655MP
Inspect the clevis anchors (1) for broken pieces and
wear. Check the sheaves (2) for worn flanges.
STEP 10
G0805199
Loosen and remove the four bolts (1) from the rear
cover (2). Remove the cover from the boom.
STEP 11
G1005037
Inspect the single chain (1) for wear or broken
pieces. Check the sheave (2) for worn flanges.
STEP 12
The single and double chains should be lubricated
with 80/90 weight oil. Refer to the lubrication section
of the Operator’s Manual.
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