TM 5-2420-224-20-2
BACKHOE BOOM CYLINDER REPLACEMENT
This task covers:
a. Removal b. Installation
I N I T I A L S E T U P
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
Packing
Washer, Lock
Caps and Plugs
Appendix C, Item 7
Rags
Appendix C, ltem 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 e r
d i s c o n n e c t
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.
• B a c k h o e b o o m c y l i n d e r
w e i g h s 8 3 p o u n d s ( 3 8
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 boom 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.
R E M O V A L
NOTE
Procedure is the same for both boom cylinders, except as noted.
1.
REMOVE two snap RINGS (1) and two washers (2).
NOTE
Quantity of washers may vary from zero to several.
2.
SLIDE rod EYE off rod (3) and REMOVE WASHER(S) (4).
3.
REMOVE nut (5) and CAPSCREW (6).
4-658
