Lull 6K Service Manual User Manual
Page 303
Boom and Transfer
Service Manual — Models 644B, 6K, 844C, 8K, 1044C, 10K
6-53
Adding or removing shims from bolted pads may require a different
capscrew length or washer selection.
Fig. 6-38: Determining Capscrew Length
(Ref. Fig. 6-38) Select a combination of capscrew length, flatwasher (if
needed), and lockwasher (spring and/or star) to obtain the required
dimension (Dimension A). This dimension will ensure that the capscrew
will not protrude past the nut insert and cause boom damage. See
Fig. 6-39. Capscrews that can be purchased from JLG come in three (3)
lengths (3/4", 1", and 1-1/4").
Clearance is measured from under the capscrew head to the
lockwasher.
A lockwasher must always be used under the capscrew head.
Apply nonpermanent thread locking compound to the first few threads of
the capscrew before final installation.
Fig. 6-39: Correctly Installed Capscrew
(Ref. Fig. 6-39) The end of the installed capscrew should be flush with, or
just beneath, the inner edge of the nut insert.
Dimension A
Bolted Pad
Nut Insert
Washer
Capscrew
Boom
Lockwasher
J1034
Pad Number
Dimension A
39023A
39024A
39530A
39594A
39604A
0.28"–0.33"
0.39"–0.44"
0.39"–0.44"
0.39"–0.44"
0.21"–0.26"
Bolted Pad
Nut Insert
Bolt
Boom
J1034