TM 9-4940-568-34
3-62
3-17. BOOM BASE SECTION REPLACEMENT (Continued)
(9) Remove screw (15), washer (16), and
bushing (17) from rivet eyebolt (18).
(10) Remove rivet eyebolt (18) from pivot
shaft (19).
(11) Remove pivot shaft (19) from LH lift
cylinder (20).
(12) With help from assistant, remove boom
base section (21).
b.
Installation
WARNING
To prevent personal injury, ex-
treme care must be taken to prop-
erly handle heavy overhead ob-
jects. Make sure all slings and
straps are safe to use and are se-
cured properly. Make sure there
are no obstacles in the way. Keep
clear of all suspended loads.
(1) Attach lifting device to boom base
section (21) and position boom base
section (21).
(2) With help from assistant, install LH
tension link cylinder (8) with pivot shaft
(5).
(3) With help from assistant, install mast (7)
with pivot shaft (5).
(4) With help from assistant, install RH
tension link cylinder (6) with pivot shaft
(5).
(5) Install two rivet eyebolts (4) in pivot
shaft (5).
(6) Apply sealing compound to threads of
two screws (1).
(7) Install two bushings (3), washers (2),
and screws (1) in rivet eyebolts (4).
(8) Tighten two screws (1) to 135 lb-ft (183
N.m).
