TM 5-2420-224-20-2
CRANE MAST LOCKING CYLINDER REPLACEMENT
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:
Nut, Lock (2)
Packing
Caps and Plugs
Appendix C, Item 7
Rags
Appendix C, Item 32
Personnel Required: (2)
References:
LO 5-2420-224-12
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 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 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
mast
locking
cylinder
w e i g h s 1 1 7 p o u n d s ( 5 3
kilograms). To avoid personal
injury, use a hoist or suitable
l i f t i n g d e v i c e w h e n l i f t i ng
crane mast locking 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 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
Procedure is the same for both mast locking cylinders.
Tag lines
1.
DISCONNECT
prior to disconnecting to aid in connecting.
two HOSES (1 and 2). INSTALL CAPS or PLUGS.
4-694