TM 5-2420-224-20-2
BACKHOE DIPPER 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/Patts:
Washer, Lock (2)
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 e r
d i s c o n n e c t
a n y
h y d r a u i i c i i n e o r f i t t i n g
w i t h o ut
f i r st
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.
• B a c k h o e d i p p e r c y l i n d e r
w e i g h s 1 0 7 p o u n d s ( 4 9
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 n g
backhoe dipper cyiinder.
• 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
1.
2.
Quantity of washers may vary
from zero to several.
REMOVE two retaining rings (1), washer(s)
(2), and PIN (3).
USING suitable HOIST, SUPPORT upper part
of dipper CYLINDER (4) and FULLY
RETRACT piston ROD (5) hydraulically.
4-670
