b.
Removal
(2) Remove four nuts, lockwashers and
capscrews (fig, 4-32), then remove two adapters from
(1) Remove two nuts, lockwashers, and
catwalk.
capscrews securing catwalk to pile lead (fig. 2-14).
Telescope catwalk to its shortest length, then disconnect
adapters from revolving frame.
Section V. ACCESSORIES
4-38. General
The accessory items installed on crane-shovel units
include horn and extension (trouble) light.
This section will describe organizational maintenance
responsibilities for these items.
4-39. Horn
a. Removal.
(1) Tag and disconnect two electrical leads
(2) Remove two nuts, lockwashers, clamp,
and screws that secures horn to underside of revolving
frame and remove horn.
b. Cleaning, Inspection and Repair.
Figure 4-33. Horn, removal and installation.
and remove tags. Insure that ample electrical connector
(1) Clean all parts with an approved cleaning
plugs are well seated in the female half.
solvent and dry thoroughly.
(2) Visually inspect horn and mounting
4-40. Extension (Trouble) Light
hardware for damage or defect. Inspect electrical leads
The trouble light hangs in cab ready for installation of
for defective insulation or connectors.
quick connector plug into trouble light socket (fig. 2-24)
Test leads and horn for continuity.
on lighting control panel.
(3) Replace defective horn, lead, or mounting
Length of light cord allows use of light at any place
hardware.
inside cab enclosure.
c. Installation.
(1) Position horn on revolving frame (fig. 4-
33), install two screws, clamp, lockwashers, and secure
with two nuts.
(2) Install two electrical leads as tagged
Figure 4-33. Horn, removal and installation.
4-33
