Gradall LOED 534A Service Manual - Manual (Page 9)

EXTENSION CHAIN REPLACEMENT
DISSASSEMBLY
Retract boom completely.
Remove rear boom cover.
Remove extension (large) chain adjusting and jam nuts.
Remove hose retainer and jam nuts. Disconnect hoses.
Remove bolts holding hose guide pan to front of strongback.
Remove strongback.
Unpin retraction (small) chain from chain ears at back of third section.
Allow chain to lie on bottom of 1st section.
Unbolt take-up beam bracket from back of section two. Pull beam and
hose guide pan out back of boom.
Unpin extension chain from ears at back of section three.
REASSEMBLY
Note: Replace chain ends whenever chain is replaced
Pin extension chain to ears at back of section three.
Lay chain and hoses in hose guide pan.
Carefully slide take-up beam and guide pan into boom allowing chain
and hoses to roll over sheaves at front of beam.
Bolt take-up beam bracket into back of section two.
Note: Use LOCTITE 242 (blue-medium strength) on all bolts and
torque to specification.
Pin retraction chain to ears on back of section three.
Reinstall strongback.
Bolt hose guide pan to strongback.
Reconnect extension chain. With crowd cylinder fully retracted,
tighten extension chain until there is no slack in retraction
chain.
Reconnect hoses and hose retainers.
Reinstall rear boom cover.
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