16-12.3. OUTER BOOM - REPLACE/REPAIR (Contd)
Start engine and raise outer boom (3) as
necessary to access hoses (1 and 2). Stop
Disconnect hoses carefully during step b. Hydraulic oil may
be under pressure. Failure to follow this precaution will
cause personal injury.
Tag and disconnect three hoses (1) from lines
(4) at bulkhead. Plug three hoses (1) with
Remove capscrew (5), four clamp halves (6)
and nut (7) securing two hoses (2). Leave
hoses (2) plugged with metal caps.
DISCONNECT ROD END OF BOTH BOOM HOIST
CYLINDERS (8) FROM OUTER BOOM (4).
Place suitable wood block across vehicle deck
behind cab to support boom hoist cylinders (8)
when cylinders are lowered.
Start engine. Lower outer boom until cylinder
pivot pins (9) are just above cab. Stop engine.
Support outer boom (3) with hoist and slings
positioned at front of boom (3).
Remove capscrew (10) and locknut (11)
securing pivot pin (9) to boom hoist cylinder
(8). Discard locknut (11).
Support boom hoist cylinder (8). Remove pivot
pin (9) from outer boom (3) and boom hoist