TM 5-2420-224-20-2
BACKHOE BOOM REPLACEMENT
This task covers:
a. Removal b. Installation
I N I T I A L S E T UP
Applicable Configuration:
Equipment Condition:
SEE
Reference
Condition Description
Tools and Special Equipment:
Page 4-670
Backhoe Dipper Cylinder
Removed
Shop Equipment, SC 4910-95-CL-A74
Tool Kit, SC 5180-90-CL-N26
Page 4-760
Backhoe Dipper Removed
Materials/Parts:
Page 4-658
Backhoe Boom Cylinders
Removed
Oil, Lubricating
Appendix C, Item 22
Page 4-610
Backhoe Boom Cylinder
Personnel Required: (3)
Hydraulic Lines and
Fittings Removed
General Safety Instructions:
W A R N I N G
B a c k h o e b o o m w e i g h s 3 83
p o u n d s ( 1 7 4 k i l o g r a m s ) . To
avoid personal injury, use a
hoist or suitable lifting device
when lifting backhoe boom.
R E M O V A L
1.
2.
3.
4.
5.
6.
REMOVE two screws (1), two washers (2), two edge washers (3), two PINS (4), and BOOM (5).
IF DAMAGED, REMOVE two lubrication FITTINGS (6) from two pins (4).
REMOVE screw (7), MOUNT (8), support (9), shim(s) (10), spacer (11), and bar (12).
REMOVE BACKHOE BOOM LATCH (13) (page 4-770).
USING BRASS DRIFT PIN, REMOVE eight BUSHINGS (14, 15, 16, and 17).
IF DAMAGED, REMOVE three lubrication FlTTINGS (18, 19, and 20).
4-752
