20
505
508
502
504
506
503
506
501
507
549
CABLE DRUM
SERVICE
DISASSEMBLY
1. Stand the drum with the freefall end fl ange down. Re-
move the twelve capscrews (508) and lift the motor
end fl ange (503) off of the drum barrel. Remove the oil
seal (505) and o-ring (504) from the motor end fl ange
and discard.
2. Use bearing pullers to remove the bearing (504) from
the drum barrel.
3. Rotate the drum barrel so the freefall end fl ange is
facing up. Remove the twelve capscrews (507) and
lift the fl ange off of the drum barrel. Discard o-ring
(506).
ASSEMBLY
1. Install the bearing (504) into the motor end of the drum
barrel (502) and ensure it is seated.
2. Apply Loctite Aviation Gasket sealant or equivalent to
the outside diameter of the seal (505) and install the
seal in the motor end drum fl ange (503) with the spring
side of the seal toward the drum barrel.
3. Install o-ring (506) on the motor end drum fl ange and
grease lightly. Slowly lower the motor end fl ange (503)
onto the bearing end of the drum barrel (502). Apply
Loctite 242 to the capscrews (508) and torque to 110
lb-ft (149 N-m).
4. Set drum barrel on motor fl ange end. Install o-ring
(506) on freefall end drum fl ange (501) and grease
lightly.
5. Slowly lower freefall end drum fl ange onto drum bar-
rel. Apply Loctite 242 to the capscrews (507) and
torque to 110 lb-ft (149 N-m).
Note: The capscrews used to fasten the drum fl ange
to the drum barrel are different lengths for each drum
fl ange. The motor end fl ange capscrews are 2 inch
long hex heads, and the freefall end capscrews are
1-¼ inch-long socket heads.
