TM 5-2420-224-20-2
C R A N E E X T E R N A L E N D E X T E N S I O N C Y L I N D E R H Y D R A U L I C L I N E S
A N D F I T T I N G S R E P L A C E M E N T
This task covers:
a. Removal b. Installation
Applicable Configuration:
General Safety Instructions:
HMMH
Tools and Special Equipment:
Shop Equipment, SC 4910-95-CL-A74
Tool Kit, SC 5180-90-CL-N26
Materials/Parts:
Packing (AR)
Washer, Lock (AR)
Nut, Lock (AR)
Caps and Plugs
Appendix C, Item 7
Rags
Appendix C, Item 32
Equipment Condition:
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 u t
f i r s t
d r o p p i n g
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 an
p i e r c e b o d y a n d c a u s e
severe injury to personnel.
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.
Reference
Condition Description
Page 2-23
Crane in Three-Point
Stance
Page 2-23
Hydraulic Pressure
Relieved
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 removal to aid in installation.
Discard packing(s), lock washer(s), and lock nut(s).
REMOVE crane external end extension cylinder hydraulic LINES and FITTINGS using illustration and legend
as a guide.
NOTE
Install new packing(s), new lock washer(s), and new lock nut(s).
INSTALL crane external end extension cylinder hydraulic LINES and FlTTINGS using illustration and legend
as a guide.
4-632
