6A-38 - LOWER UNIT 90-824052R3 JUNE 2002
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.
4. Inspect tapered bearing race for pitting, grooves,
scoring, uneven wear and discoloration (from
overheating). Replace tapered bearing (on
forward gear) and race if any of these conditions
are found. (Always replace tapered bearing and
race as a set.)
5. To determine condition of propeller shaft needle
bearings (in forward gear), inspect propeller shaft
forward gear needle bearing surface as outlined
in “Propeller Shaft Inspection.”
Gear Housing
CLEANING AND INSPECTION
1. Clean gear housing with solvent and dry with
compressed air.
2. Check gear housing carefully for impact damage.
3. Check for loose fitting bearing cups and needle
bearings.
4. Inspect bearing carrier cover nut retainer threads
in gear housing for corrosion damage and/or
stripped threads.
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