TM 5-2420 -224-20-2
CRANE MAST LOCKING CYLINDER HYDRAULIC LINES AND FITTINGS
R E P L A C E M E NT
This task covers:
a. Removal b. Installation
Applicable Configuration:
General Safety Instructions:
HMMH
Tools and Special Equipment:
Shop Equipment, SC4910-95-CL-A74
Tool Kit, SC 5180-90-CL-N26
Materials/Parts:
Packing (AR)
Caps and Plugs
Appendix C, Item 7
Rags
Appendix C, Item 32
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 ct
a ny
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 ng
p r e s s u r e t o z e r o . A h i gh
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.
Fuel and oil are slippery and
c a n c a u s e f a l l s . T o a v o id
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 removal to aid in installation.
Discard packing(s).
REMOVE crane mast locking cylinder hydraulic LINES and FlTTINGS using illustration and legend as a guide.
INSTALL crane mast locking cylinder
4-638
NOTE
Install new packing(s).
hydraulic LINES and FITTINGS using illustration and legend as a guide.
