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MAINTENANCE
,
Seal
Seal
Gear Box
50
Leakage Repair
1. Bore-tite", a sealant, is used on the outer
.- d iameter of the seals. Substitute seals may not
meet original equipment specifications and
could cause leakage..
2. Clean gearbox exterior to remove all foreign
material. When opening, use care to prevent
foreign material from entering gearbox.
3. To repair horizontal seal, vertical.shaft, or
leakage between cover and gearbox, remove
vent plug
move leaking seal and replace (refer to Seal
Installation). Use care to prevent rolling. seal lip
Vent
under. Replace gasket between cover and.
gearbox.
Seal Installation
Proper seal installation is important. An improperly
installed seal will leak and could result in bearing
eter seats. Inspect gear shafts. Pay specific
attention to areas where seals seat. Check for
Gearbox gasket
cracks, grooves, nicks or bumps. Replace
housing or shaft if damage cannot be repaired
by resurfacing with emery cloth.
2. Lubricate seal lip and carefully guide over shaft
using a blunt tool such as a letter opener. Be
knife as it will nick and ruin seal.
3. Place seal squarely on housing (spring-loaded
lip toward inside of gearbox). Select a seal
driver, a piece of pipe or tubing with an OD that
will set on outside edge of seal but will clear
housing. A driver that is too small will bow seal
4.
distortion to metal seal cage. Seat vertical seal
flush with housing and horizontal seal against
shoulder in housing.
5. Distortion to seal case or damage to seal lip will
damaged in installation.
6. Check for proper vent plug operation and fill
gearbox with
and
drain gear lube from box. Re-
oz. of SAE 9OW gear lube.
8
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