Gradall LOED 534A, Service Manual

Page: 7 / 91

RETRACTION CHAIN REPLACEMENT
DISSASSEMBLY
Retract boom completely.
Remove rear boom cover.
R e m o v e e x t e n s i o n ( l a r g e ) c h a i n a d j u s t i n g n u t a n d j a m n u t .
R e m o v e h o s e r e t a i n e r n u t s a n d j a m n u t s . D i s c o n n e c t h o s e s .
R e m o v e b o l t s h o l d i n g h o s e g u i d e p a n t o f r o n t o f s t r o n g b a c k .
R e m o v e s t r o n g b a c k .
U n p i n r e t r a c t i o n ( s m a l l ) c h a i n f r o m c h a i n e a r s a t b a c k o f t h i r d
s e c t i o n .
U n p i n r e t r a c t i o n c h a i n f r o m s e c t i o n o n e e a r s ( a c c e s s h o l e i n
b o t t o m o f s e c t i o n ) .
P u l l c h a i n o u t b a c k o f b o o m .
REASSEMBLY
Note: Replace chain ends whenever chain is replaced.
Use fish wire to pull new chain from back of boom to ears in
bottom of section one.
Lay chain over sheave and pin to back of section three.
Reinstall strongback. Use LOCTITE 242 (blue-medium strength)
on all bolts and torque to specification.
Bolt hoseguide pan to strongback.
Reconnect extension chain. With crowd cylinder fully retracted,
tighten extension chain until there is no slack in retracting
chain. Install jam nut.
Reconnect hoses and hose retainers.
Reinstall rear boom cover.
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