SM11-010-1
Page 12
clean cloth.
12. Remove the dowel pins from the hub by using a
punch in the pilot hole on the reverse side of the
2.
Take special care to remove all solvent from oil
hub.
passages, grooves, and bearings.
NOTE
3.
Inspect gears for unusual wear patterns,
chipped, cracked, or broken teeth.
The bearing should not be removed
from the right drum end unless replace-
4.
Inspect bearings for chips, cracks, galling, or
ment is required. Steps 13 and 14 are
missing bearings. Check for signs of overheating.
not required unless removing the bear-
ing.
5.
Inspect output shaft for cracks. Check sealing
13. Remove the seal from the bearing retainer.
surfaces for nicks, scratches, or burrs that can cause
leaks.
14. Remove the capscrews securing the bearing re-
tainer. Remove the bearing retainer and gasket.
6.
Inspect the springs for distortion, cracks or oth-
er damage. Check springs against dimensions listed
15. Remove the bearing.
in the brake assembly section of this SM Package.
Springs that exceed these dimensions should be re-
Primary or Secondary Carrier Assembly.
placed.
1.
Remove the snap ring which secures the pin.
7.
Inspect threaded parts for stripped, damaged
2.
Use a brass drift to drive the pin out of the car-
threads, or burrs.
rier and planet gear.
8. Prelubricate all seals, O-rings and bearings with
3.
Remove the planet gear and thrust washer. Be
90 weight EPGL gear lubricant unless otherwise
careful not to lose any of the needle bearings.
specified.
4.
Repeat steps 1, 2, and 3 for the other two plan-
et gears.
ASSEMBLY.
NOTE
CLEANING AND INSPECTION.
Any maintenance involving disassem-
bly of the hoist should include replace-
WARNING
ment of all gaskets and O rings.
-
Cleaning solvents can be toxic, flammable,
Primary or Secondary Carrier Assembly.
an irritant to the skin, or give off harmful
fume. Avoid prolonged skin contact, inhal-
1. Place a small amount of EP-MPG grease around
ing of vapors, or smoking. Failure to comply
the inner diameter of the planet gear. Position one
can result in injury of death to personnel.
of the thrust washers on a flat surface and place the
planet gear in position on top of it. Install the roller
bearings in place using the grease to hold them up-
WARNING
right. A socket just smaller than the diameter of the
pin can be used to stabilize the rollers until they are
all in place. Position the other thrust washer in place.
Compressed air shall not be used for drying
purposes except where reduced to less than
2. Carefully install the planet gear in the carrier
30 PSI (206.7 kPa), then only with effective
and insert the pin. Ensure all the rollers are in posi-
chip guarding and personal protective equip-
tion.
ment.
3.
Secure the pin with the snap ring.
4. Repeat steps 1, 2, and 3 for the other planet
1.
Clean all metal parts as required with cleaning
solvent and dry with compressed air or a lint free,
