5-18. HOOK ARM HYDRAULIC TUBE (MAIN FRAME) REPLACEMENT (continued).
(7) Remove lifting device from main frame (2) and hook arm (1).
Main cylinder weighs 325 lb (148 kg). Attach suitable lifting device prior to removal
to prevent possible injury to personnel.
(8) Attach lifting device to main cylinder (7).
Use care when installing retaining rings. Retaining rings are under tension and can
act as projectiles when released causing injury to personnel.
(9) With the aid of an assistant, support main frame cylinder (7) using lifting device and remove retaining ring
(9), shim (10) and main cylinder pivot pin (11). Lower main cylinder out of main frame (2) and discard
(10) Remove lifting device from main cylinder (7).
The LHS hydraulic system operates at oil pressure up to 3625 psi (24,994 kPa). Never
disconnect any hydraulic line or fitting without first dropping pressure to zero.
Failure to comply may result in serious injury to personnel.
Tag and mark all hoses and tubes prior to removal.
Cap and plug hydraulic hoses and tubes after removal.
Remove cable ties as required.