TM 5-2420-224-20-2
B A C K H O E C O N T R O L V A L V E , B O O M S E C T I O N H Y D R A U L I C L I N E S
A N D F l T T I N G S R E P L A C E M E N T
This task covers:
a. Removal b. Installation
I N I T I A L S E T UP
Applicable Configuration:
General Safety Instructions:
SEE
Tools and Special Equipment:
Shop Equipment, SC 4910-95-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 2-22
Backhoe 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 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 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 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.
R E M O V A L
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 backhoe control valve, boom section hydraulic LINES and FITTINGS using illustration and legend
as a guide.
I N S T A L L A T I ON
NOTE
Install new packing(s).
INSTALL backhoe control valve, boom section hydraulic LINES and FITTINGS using illustration and legend
as a guide.
4-612
