SECTION 3 - CHASSIS & TURNTABLE
3-78
– JLG Lift –
3120740
13.
Reposition motor in vise. Clamp across ports as shown
above. Do not clamp side of housing. Excessive clamp-
ing pressure on side of housing causes distortion.
14.
Remove cap screws from mounting flange. These screws
are assembled with Loctite to hold them in place.
The screws will require 35-45 Nm (300 - 400 in/lbs) of
torque to break loose and 11 Nm (100 in/lbs) torque to
remove. Do not use impact wrench on screws that have
been secured with Loctite. THis could result in rounded
heads or broken sockets.
NOTE:
If torque higher than given above is required to break
screws loose, apply heat according to following instruc-
tions.
When heated, Loctite partially melts. This reduces the torque
required to remove screw. Use small flame propane torch to
heat small area of housing where screw enters (see figure
below). Be careful not to overheat housing and damage
motor. Gradually apply torque to screw with socket wrench as
heat is applied for 8 to 10 seconds. As soon as screw breaks
loose, remove heat from housing. Continue turning screw until
it is completely removed.
15.
Carefully remove flange from housing.
SOME MOTORS MAY HAVE A QUAD SEAL AND BACK-UP RING IN PLACE OF THE
PRESSURE SEAL. THE QUAD SEAL AND BACK-UP RING ARE NO LONGER AVAIL-
ABLE AND ARE REPLACED BY THE PRESSURE SEAL. THEY ARE INTERCHANGE-
ABLE, BUT SOME PREC AUTIONS MUST BE TAKEN TO INSURE PROPER
INSTALLATION. FOLLOW THE REASSEMBLY INSTRUCTIONS.
16.
Exclusion seal, back-up ring, pressure seal and seal will
come off with flange. Use seal removal tool as shown to
remove exclusion and pressure seals.
BE CAREFUL NOT TO SCRATCH SEAL CAVITY O.D. THIS COULD CREATE A LEAK
PATH.
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