Tech Support: www.steppir.com/support Tel: 425.891.6134 support@steppir.com
Page 22
The DB18 uses two 2” x 72” aluminum boom sections and two 1-3/4” x 72” aluminum boom sections.
The 2” boom sections are held together using a boom center-splice (PN 10-1203-01). The 1-3/4”
boom sections telescope inside the 2” sections and are secured using 1/4” bolts.
It is important to note that while the 2” boom sections look identical, there is a subtle difference. One
of the boom pieces (PN 10-1202-11) has two 1/4” drilled holes on each end of the tube. The other 2”
boom piece (PN 10-1202-52) has two 1/4” drilled holes on the end that receives the 1-3/4” pipe, and a
set of 5/16” drilled holes on the other end—which accommodates the EZ-Eye assembly. Because of
this, the center-splice that is used to join the two pieces of 2” boom section also has a set of two
drilled 5/16” holes on one side, and a set of two 1/4” drilled holes on the other side as shown in figure
1.10. Be sure to match the correct hole sizes on the center-splice to the proper sections of 2” boom.
CHAPTER ONE
SECTION 1.1
BOOM ASSEMBLY (continued)
CONNECTING THE EZ-EYEBOLT TO THE BOOM
Key QTY Part # Description
A 1 60-0037 5/16”x4” Eyebolt
B 1 60-0103 5/16”x3” Hex head bolt
C 3 60-0033 5/16” Flat washer
D 2 60-0046 5/16” Nylock nut
E 1 10-1203-01 1-3/4” x 12” Boom center-splice
F 2 60-0029 1/4” x 3” Hex head bolt
H 10 60-0041 1/4” Flat washer
J 2 60-0030 1/4” Nylock nut
A
B
C D
F
F
C
D
E
H
H
H
H
H
J
H
H
H
H
H
J
FIG. 1.10
C