JLG G12-55A Parts Manual - Manual (Page 58)

BOOM
G10-55A, G12-55A 3126020 2-30
Figure 2-6 Bearings, Pads, Spacers & Shims, (Third Boom Section)
PAP2240
1
23
19
18
17
16
24
22
13
12
24
25
19
23
19
3
4
15
7
18
13
11
24 23
19
18
17
26
12
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13
8
7
21 1
13
27
14
10
13
9
5
8
7
6
16
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2
18
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20
G12-55A
NOTE:
1. WEAR PAD SHIMMING:
a) WHENEVER A SHIM IS USED WITH A PAD, A SPACER WITH HOLES MUST BE INSERTED BETWEEN PAD AND SHIM.
b) THE WEAR PAD OR WEAR PAD INSERT MUST NOT SIT DIRECTLY ON THE SLOTTED SURFACE OF SHIMS.
c) ADD BEARING PAD SHIMS AND SPACERS AS REQUIRED TO SHIM BOOM TO MAINTAIN A TOTAL MINIMUM GAP OF 0.070 TO 0.130 IN BOTH
HORIZONTAL AND VERTICAL DIRECTIONS.
d) BEARING PAD BOLTS REQUIRE ONE HARDENED WASHER. HOWEVER, UP TO (2) HARDENED WASHERS MAY BE USED EXCEPT WHERE
NOTED OTHERWISE. UNDER NO CIRCUMSTANCES SHOULD MORE THAN (2) HARDENED WASHERS EVER BE USED.
e) THE LENGTH OF PAD BOLTS DEPENDS ON THE NUMBER OF SHIMS USED. THE BOLT CANNOT EXTEND PAST CHAMFER ON BEARING PAD.
2. ADD MYSTIK TETRIMOLY GREASE (14404793) TO ALL BEARING PADS AND ALL BEARING PAD SLIDE PATHWAYS. IF APPLICABLE, THIS
INCLUDES ALL PAD GREASE FITTINGS AT THE REAR OF BOOM.