6D-22 - LOWER UNIT 90-824052R3 JUNE 2002
5. Inspect tapered bearing race for pitting, grooves,
scoring, uneven wear and discoloration from
overheating. Replace tapered bearing and race
as a set, if any of the preceding conditions are
found.
6. Inspect driveshaft for groove(s) where water
pump base oil seals contact shaft. Replace
driveshaft if groove(s) are found.
Forward Gear
REMOVAL AND DISASSEMBLY
NOTE: Forward gear can only be removed from gear
housing after driveshaft and pinion gear have been
removed.
1. Reach into gear housing and lift out forward gear.
IMPORTANT: DO NOT remove tapered bearing or
needle bearings from forward gear, unless
replacement of bearings is required. (Bearings
cannot be reused after they have been removed.)
2. If inspection determines that replacement of
forward gear tapered bearing is required, remove
bearing from gear and bearing race from gear
housing (tapered bearing and race MUST BE
replaced as a set), as follows:
a. Install Universal Puller Plate (91-37241)
between forward gear and tapered bearing.
b. Place forward gear, bearing and puller plate
on a press and press gear out of bearing with
a suitable mandrel.
b
a
51870
a - Universal Puller Plate
b - Mandrel
c. Use Slide Hammer (91-34569A1) to remove
forward gear tapered bearing race.
a
b
51865
a - Slide Hammer
b - Tapered Bearing Race
d. After forward gear tapered bearing race is
removed from gear housing, lift out and retain
shims which were behind bearing race.
3. If inspection determines that replacement of
propeller shaft needle bearings in forward gear is
required, remove bearing from gear as follows:
a. Clamp forward gear in a soft jaw vise
securely.
b. From toothed-side of gear, drive propeller
shaft needle bearings out of gear with a
punch and hammer.
CLEANING AND INSPECTION
CAUTION
DO NOT spin bearings dry with compressed air,
as this could cause bearing to score.
1. Clean forward gear and bearings with solvent
and dry with compressed air.
2. Inspect gear teeth for pitting, grooves, scoring,
uneven wear and for discoloration (from over-
heating). Replace gear if any of these conditions
are found.
3. Check clutch jaws on forward gear for damage.
Replace forward gear if damage is found.
To Next Page
Loading...
Need help?
General
