Counterweight Removal (T8E/T20E); Mast Assembly Lifting - JLG TOUCAN 8E Service And Maintenance Manual

Figure 5-6. Counterweight Removal (T8E/T20E)
10. Tag and disconnect all connectors of the harness
coming from the chassis (harness coming out from
the rotary power track). Disconnect the power cable
(BLACK TAGGED) from the hydraulic unit motor.
Remove all clamps securing hoses and harnesses
on the left hand side of the hydraulic power unit.
Tag, disconnect and cap hydraulic lines from ports 5
and 6 of the hydraulic power unit valve body.
Remove hardware securing the rotary power track to
the turntable.
11. Tag, disconnect and cap hydraulic lines from the
mast cylinder valve. Unscrew coil nut, remove the
manual override device, the O-ring and the coil.
Remove mast cylinder valve from cylinder port
(Refer to Section 7).
12. Remove hardware securing the mast lateral power
track to mast section #1. Remove all clamps secur-
ing hoses and harnesses on the left hand side
(T10E/T26E), right hand side/right hand side (T8E/
T20E) of mast section #1.
13. Tag and disconnect chain slack harness connector
(harness coming out from the mast inside power
track). Remove hardware securing the mast inside
power track to mast section #1.
14. Attach suitable sling(s) to mast sections as shown
following and draw all slack from sling(s). Remove
the locknut, attachment nut and chain slack detec-
tion system from chains attachments on mast sec-
31210090
SECTION 5 - TURNTABLE AND VERTICAL MAST
tion #1. Attach chain anchor with plastic straps to
prevent the chains from running over the pulleys.
15. Loosen the roller pin locknuts at the top of mast sec-
tion #1 and slightly unscrew roller pins to allow
clearance. Lift the mast sections assembly by a max-
imum of 300mm (12") to gain access to the mast cyl-
inder anchor pin on mast section #2.
WHEN MAST SECTIONS ASSEMBLY IS LIFTED, MAST CYLINDER
WILL NORMALLY EXTEND. IF NOT, PUSH THE CYLINDER BAR-
REL DOWN (TO EXTEND THE CYLINDER) TO RETU RN THE
STUDS OF THE BARREL BOTTOM END TO THEIR SUPPORT ON
BASE PLATE.
16. Plug mast cylinder port (3/8"BSPP). This is to pre-
vent the cylinder from retracting suddenly when the
anchor pin on mast section #2 will be removed.
17. Remove one cotter pin from mast cylinder anchor
pin. Using a suitable drift, drive the pin out. Tie the
cylinder to mast section #1 with a rope and protect
the chrome surface of the rod.
18. Carefully lift the ma st sections assembly until the
roller pins at the bottom of mast section #2 are
accessible. Remove the roller pin locknuts and
slightly unscrew roller pins to allow clearance. Lift
the mast sections assembly as shown following.
Figure 5-7. Mast Assembly Lifting
– JLG Lift –
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