JLG GRADALL 522, Owner'S/Operator'S Manual

Page: 107 / 288

17
Se c t ion 3
Pre pa re Pa rt s for Asse m bly
Liquid Adhesive
Meritor uses the following liquid adhesives to retain
threaded fasteners:
Product Type Color Cure Time
Loctite 271 High Red 2 hours
241 Medium Blue 6 hours
221 Low Violet 6 hours
Three Bond
1305 High Red 5 hours
1334 Medium Green 5 hours
1341 Low Blue 10 hours
Disassemble Locked Sets
CAUTION
Do not use impact wrenches or strike components
with a hammer.
To disassemble sets originally locked with liquid
adhesive, use the regular mechanical disassembly
procedure.
If the removal of a capscrew, for example, becomes
difficult due to a worn head or unusually high
breakaway torque, the locking strength can be
reduced by heating the threaded area to
approximately 300°F (150°C). Heat slowly to avoid
thermal stresses on the differential case and gears.
Cleaning
WARNING
To avoid serious personal injury, trichloroethylene
must not come in contact with your skin. Do not
smoke and avoid breathing vapors in closed
rooms without ventilation. Do not use
trichloroethylene near flames, welding operations
or hot surfaces exceeding 900°F (482°C).
Clean capscrew, nut or bolt tapped hole and fastener
thread carefully. Use a cleaning solvent such as
trichloroethylene or equivalent to remove dirt, oil,
grease or moisture.
!
!
Reassembly
•
Check the type of liquid adhesive to be used and
where the adhesive is to be applied.
•
In threaded holes where fasteners did not require
removal, check each one for tightness by applying
the minimum amount of specified torque.
•
If fasteners do not rotate, they are tightened
properly.
•
If fasteners rotate to any degree, they must be
removed and liquid adhesive must be applied.
Application
1. Apply liquid adhesive to:
•
Bolt threads when component has open hole.
Before installing bolts, visually check to make
sure that liquid adhesive has filled gap
between threads.
•
Threaded hole when component has blind
hole. Allow 4 to 6 drops to run down side of
each hole. If liquid adhesive is applied to bolt,
trapped air in hole will create back pressure
and “blow out” liquid adhesive as bolt
advances. Figure 3.7.
2. Tighten fasteners with recommended torque.
Figure 3.7
T
Courtesy of Crane.Market