c. Cleaning, Inspection and Repair.
(2) Connect hydraulic lines.
(3) Start engine and operate boom thru several
(1) Clean all parts.
cycles to check for proper performance.
(2) Inspect all parts for corrosion, cracks
3-3. Boom
distortion or other defects. Check contact areas for
a. Removal.
scoring. Remove burs with a fine stone.
(1) Remove boom (para 2-6).
(3) Replace all seals, packings, and un-
(2) Remove boom topping cylinder (para 3-1).
servicable parts.
(3) Remove boom extension cylinder (para 3-
d. Reassembly.
2).
(1) Immerse all parts in clean hydraulic oil for
(4) Withdraw boom male section.
lubrication before reassembly.
b. Disassembly. Refer to figure 3-3 and
(2) Refer to figure 3-2 for reassembly of ex
disassemble boom to extent required for repair.
tension cylinder.
e. Installation.
(1) Support cylinder in position and insert
pins. Secure pins with capscrews and lockwashers
3-5
