TM 9-4940-568-34
3-76
3-21. MAST REPLACEMENT
THIS TASK COVERS:
a. Removal
b. Installation
INITIAL SETUP
Tools
Tool Kit, General Mechanic’s
(Item 67, Appendix F)
Materials/Parts
Sealing compound (Item 29, Appendix B)
Packing, preformed (4) (Item 76, Appendix E)
Personnel Required
1 Assistant
Equipment Condition
FRS unloaded, (TM 9-4940-568-10).
Boom base section removed (para 3-17).
a.
Removal
NOTE
Place a container to catch
hydraulic oil during hose removal.
Plug all hoses after removal to
prevent dirt from entering
hydraulic system.
Tag and mark all hoses prior to
removal to ensure proper
installation.
Left and right side hoses are
removed the same way. Left
side shown.
Remove cushion clamps as
required.
(1) Remove eight screws (1) and four
clamps (2) from mast (3).
(2) Disconnect four hoses (4, 5, 6, and 7)
and preformed packings (8) from fittings
(9). Discard preformed packings.
(3) Remove two nuts (10) and fittings (9)
from mast (3).
3
1
10
9
6, 8
7, 8
5, 8
4, 8
2
