TM 5-2420-224-20-2
BACKHOE SWING CYLINDER REPLACEMENT
This task covers:
a. Removal b. Installation
Applicable Configuration:
General Safety Instructions:
SEE
Tools and Special Equipment:
Shop Equipment, SC 4910-95-CL-A74
Tool Kit, SC 5180-90-CL-N26
Material/Parts:
Packing (3)
Packing (2)
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 2-22
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 er
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 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 an
p i e r c e b o d y a n d c a u s e
severe injury to personnel.
• B a c k h o e s w i n g c y l i n d e r
w e i g h s 7 0 p o u n d s ( 3 2
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
backhoe swing 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.
R E M O V A L
NOTE
1.
Procedure is the same for both
swing cylinders except as noted.
Place backhoe in three-point
stance that will bring boom low
enough to allow access to inner
swing tower.
Backhoe must be swung to
opposite side from which swing
cylinder is removed.
REMOVE retaining RING (1) and washer (2).
4-660
INITIAL SETUP
