TM 9-4940-568-34
6-2
6-2.
OUTRIGGER EXTENSION CYLINDER REPAIR
THIS TASK COVERS:
a. Disassembly
b. Cleaning/Inspection
c. Assembly
INITIAL SETUP
Tools
Tool Kit, General Mechanic’s
(Item 67, Appendix F)
Pan, drain (Item 42, Appendix F)
Spanner wrench set (Item 82, Appendix F)
Materials/Parts
Crocus cloth (Item 11, Appendix B)
Emery cloth (Item 12, Appendix B)
Grease, lithium (Item 13, Appendix B)
Hydraulic oil (Item 16, Appendix B)
Sealing compound (Item 29, Appendix B)
Seal kit (Item 156, Appendix E)
Setscrew (Item 162, Appendix E)
Equipment Condition
Outrigger extension cylinder beam removed
(para 3-8).
Special Environmental Conditions
Cleanliness is extremely important when working
on hydraulic equipment. Clean all parts before
disassembly and work in a clean area.
a.
Disassembly
(1) With help from assistant, position
extension cylinder (1) in soft jawed vise
using rubber stripping to protect cylinder
surface.
(2) Position drain pan under extension
cylinder (1).
WARNING
Oil will spray from cylinder
manifold ports when rod is
moved in or out. Cover
ports with two cloths to pre-
vent oil from spraying.
Failure to comply may re-
sult in injury to personnel.
CAUTION
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
assembly difficult.
(3) Remove setscrew (2) from retaining
head (3). Discard setscrew.
WARNING
Use extreme care to avoid
being scalded or burned
when
heating
retaining
head (3). Use heavy rag or
gloves to protect hands.
(4) Heat retaining head (3) to loosen
sealing compound and, using a spanner
wrench, remove retaining head (3) from
extension cylinder (1).
