Top Rollers Mast Centering; (Top View-Mast Lowered)5-10; Bottom Rollers Mast Configuration - JLG TOUCAN 8E Service And Maintenance Manual

SECTION 5 - TURNTABLE AND VERTICAL MAST
2. Bring each top roller pad in contact with corre-
sponding mast surfaces and adjust distances so
that C1D=C1G; C2D=C2G until last mast section
CxD=CxG.
CxD
. . .
C2D
C1D
Figure 5-22. Top Rollers Mast Centering
(Top View-Mast Lowered)
3. On each top roller, on right side of the machine,
loosen roller to be able to insert a 0.5 mm shim
(between roller pad and mast profile), see Figure 5-23.
Figure 5-23. Adjusting Top Roller Play
4. Slowly tighten the roller so that it comes just in con-
tact with the shim. Remove the shim and tighten the
rollers as indicated in the Table 5-2.
5-10
Top Rollers
CxG
. . .
5.
C2G
6.
C1G
Bottom Rollers Setting
7.
EXERCISE EXTREME CAUTION WHEN WORKING UNDER THE PLAT-
FORM TO PERFORM THIS STEP. NEVER STAND UNDER THE PLAT-
FORM IF THE SLACK CHAIN WARNING ALARM IS ACTIVE.
Shim
– JLG Lift –
Models 8E-20E
Mast 1 1/4
Mast 2 1/4
Mast 3 0
Mast 4
Table 5-2. Top Rollers Tightening
Tighten lock nuts on each roller.
Test mast lowering movement through a complete
stroke. No mast jamming (slack chain) must appear.
In the event of a slack chain occurrence, identify the
concerned roller and loosen roller 1/8 turn and
recheck mast lowering movement. Complete step 6
until mast lowers without sticking.
Bottom rollers setting is done with different mast
heights. Raise the mast sections to the measure-
ments shown in table 5-3.
Figure 5-24. Bottom Rollers Mast Configuration
Setting Height = C (mm)
Bottom
Rollers
Models 8E-20E
Mast 2 Maxi
Mast 3 Maxi
Mast 4 800
Mast 5
Table 5-3. Bottom Rollers Setting Height
Tightening (Turn)
Models 10E-26E
3/8
3/8
1/4
0
Models 10E-26E
Maxi
600
300
300
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