TM 5-2420-224-20-2
BACKHOE SWING TOWER REPLACEMENT
This task covers:
a. Removal b. Installation
I N I T I A L S E T UP
Applicable Configuration:
SEE
Tools and Special Equipment:
Shop Equipment, SC 4910-95-CL-A74
Tool Kit, SC 5180-90-CL-N26
Materials/Parts:
Nut, Lock
Oil, Lubricating
Appendix C, Item 22
Personnel Required: (2)
References:
LO 5-2420-224-12
Equipment Condition:
Reference
Page 4-660
Page 4-658
Page 4-612
Condition Description
Backhoe Swing Cylinders
Removed
Backhoe Boom Cylinders
Removed
Backhoe Control Valve,
Boom Section Hydraulic
Lines and Fittings
Removed
Equipment Condition (Cont):
Reference
Condition Description
Page 4-614
Backhoe Dipper Cylinder
Hydraulic Lines and
Fittings Removed
Page 4-618
Backhoe Control Valve,
Bucket Section Hydraulic
Lines and Fittings
Removed
General Safety Instructions:
W A R N I N G
Backhoe boom assembly with
d i p p e r a s s e m b l y w e i g h s
1 , 4 59
p o u n d s
( 6 6 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 n g
backhoe boom assembly with
dipper assembly.
Backhoe swing tower weighs
308 pounds (140 kilograms).
To avoid personal injury, use
a h o i s t o r s u i t a b l e l i f t i n g
device when lifting backhoe
swing tower.
R E M O V A L
1.
REMOVE two capscrews (1), two edge washers (2), two
DIPPER assemblies (5).
2.
REMOVE lock nut (6), capscrew (7), washer (8), PIN (9),
3.
IF DAMAGED, REMOVE lubrication FITTING (11).
washers (3), two pins (4), and BOOM and
and shim (10). DISCARD lock NUT.
4.
REMOVE nut (12), pin (13), spacer (14), and swing TOWER (15).
5.
IF DAMAGED, REMOVE lubrication FITTING (16).
6.
USING HAMMER and BRASS DRIFT PIN, REMOVE eight BUSHINGS (17).
4-772