TM 5-2420-224-20-2
CRANE EXTERNAL END EXTENSION CYLINDER REPLACEMENT
This task covers:
a. Removal b. Installation
I N I T I A L S E T U P
Applicable Configuration:
General Safety Instructions:
HMMH
Tools and Special Equipment:
Shop Equipment, SC 4910-95-CL-A74
Too Kit, SC 5180-90-CL-N26
Materials/Parts:
Caps and Plugs
Rags
Personnel Required:
References:
LO 5-2420-224-12
Appendix C, Item 7
Appendix C, Item 32
(2)
Equipment Condition:
Reference
Condition Description
Page 2-23
Crane in Three-Point
Stance
Page 2-23
Hydraulic Pressure
Relieved
W A R N I N G
High pressure hydraulics [oil
under 2450 psi (16,893 kPa)]
o p e r a t e t h i s e q u i p m e n t .
N e v e r
d i s c o n n e c t
a n y
h y d r a u l i c l i n e o r f i t t i n g
w i t h o ut
f i r st
d r o p p i ng
p r e s s u r e t o z e r o . A h i g h
p r e s s u r e o i l s t r e a m c a n
p i e r c e b o d y a n d c a u s e
severe injury to personnel.
Crane
external
end
extension
cylinder weighs 169 pounds
( 7 7 k i l o g r a m s ) . T o a v o i d
personal injury, use a hoist
o r s u i t a b l e l i f t i n g d e v i c e
when lifting crane external
end extension cylinder.
Fuel and oil are slippery and
c a n c a u s e f a l l s . T o a v o i d
injury, wipe up spilled fuel or
oil with rags.
C A U T I O N
Cap or plug all ports and ends of hoses and tubes to prevent contamination
of hydraulic oil. Failure to do so may result in damage to equipment.
NOTE
Tag lines prior to disconnecting to aid in connecting.
1.
DISCONNECT two HOSES (1 and 2). INSTALL CAPS or PLUGS.
2.
REMOVE eight capscrews (3), four retainers (4), and crane external end extension CYLINDER (5).
3.
REMOVE two FlTTlNGS (6 and 7).
4-690