HOOK ARM/MAIN FRAME CYLINDER REPAIR (continued).
Oil will spray from cylinder manifold ports when rod is moved in or out. Cover ports
with two cleaning cloths to prevent oil from spraying. Failure to comply may result
in injury to personnel.
Do not allow threaded or machined surfaces to come in contact with other metal
surfaces. Clearances between cylinder components are very small, any minor
damage done during disassembly could require component replacement or make
(3) Position drain pan under cylinder (1).
(4) Fully extend cylinder rod (2) to drain oil from cylinder (1) with aid of assistant. Push in cylinder rod (2)
until it extends approximately 24 in. (61 mm) and properly support cylinder rod (2).
Cylinder may need to be heated to aid in loosening of rod bearing.
(5) Remove screw (3) and unscrew rod bearing (4) from cylinder (1). Discard screw.
(6) With the aid of an assistant, remove rod (2) and piston (5) from cylinder (1).