JLG TOUCAN 8E Service And Maintenance Manual page 61

adjust backlash in the gear. Torque bearing bolts 30
to 35 Nm (22 to 25 lb ft). Remove the feeler gauge
and recheck backlash.
Figure 5-11. Backlash Adjustment
IF COMPRESSED AIR OR ELECTRICALLY OPERATED WRENCH
IS USED FOR TIGHTENING THE BEARING ATTACHMENT BOLTS,
THE TORQUE SETTING ACCURACY OF THE TOOL SHOULD BE
CHECKED PRIOR TO USE.
6. Following the torque sequence diagram (refer to
Figure 5-2.), tighten the bolts to an initial torque of
80 Nm (59 ft lbs). Then, following the same
sequence, tighten to a final torque of 117 Nm (86 ft
lbs).
31210090
SECTION 5 - TURNTABLE AND VERTICAL MAST
7. Taking care not to damage the outer race bolts,
carefully lift and position the mast section #1
assembly above the machine chassis so as the
grease fittings of the bearing are positioned 90° from
chassis centerline. Align bolts with the chassis holes
and carefully lower mast section assembly. Loosely
install 3 hardened washers, new screws, nuts and
locknuts to correctly position the assembly. Lower
the mast section #1 assembly onto the chassis.
Slightly slack the slings/chains but keep them in
place until the assembly is correctly secured to the
chassis.
8. Loosely install all hardened washers and locknuts.
Following the torque sequence diagram (refer to
Figure 5-2.), tighten the nuts to an initial torque of 80
Nm (59 ft lbs). Then, following the same sequence,
tighten to a final torque of 117 Nm (86 ft lbs).
9. Apply a generous coating of specified lubricant on
bearing teeth with a brush and install teeth covers.
10. Secure the rotary power track to the turntable.
11. Lift the machine using suitable overhead lifting
equipment attached to both lifting rings of mast sec-
tion #1 lifting rings and remove blocks.
12. Using a suitable sling attached to the barrel, install
the mast cylinder onto mast section #1, tie cylinder
to mast section #1 with a rope and protect the
chrome surface of the rod. The cylinder must be
enough extended to be able to insert the pin.
13. Route sling(s) through mast sections assembly as
indicated in the previous removal procedure. Posi-
tion sling(s) and overhead lifting equipment acces-
sory in such a way that the mast sections assembly
remains in a vertical position when lifted.
14. Engage mast sections assembly in mast section #1
profiles till being able to install mast cylinder anchor
pin. Install and correctly bend the cotter pins.
15. Loosely install the roller pin locknuts at the bottom of
mast section #2.
16. Remove the plug from the cylinder port. Slowly and
carefully lower the mast assembly to be able to run
the chain anchors through attachment holes on
mast section #1 and to install attachment nuts.
Once attachment nuts are installed, continue lower-
ing the mast assembly until the cylinder is fully
retracted.
17. Tighten attachment nuts until the required distance
between the top of the chain attachment plate and
the top end of the chain anchor is obtained (Refer to
Section 5-5). Slack and remove sling(s) from mast
sections assembly.
18. Install chain slack detection system and locknut.
Secure mast inner power track with hardware (10E/
26E). Attach chain slack sensor cable to cylinder
barrel with plastic straps.
– JLG Lift –
5-5