Mercury 150 EFI Service Manual page 499

RIGHT HAND NON-RATCHETING
CLEANING AND INSPECTION
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 overheating). 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 discolor-
ation (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 In-
spection."
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 dam-
age and/or stripped threads.
Reassembly and Installation Standard Rotation
Driveshaft Needle Bearing
REASSEMBLY/INSTALLATION
If driveshaft needle bearing failure has occurred, and original bearing race has
turned in the gear housing, gear housing MUST be replaced. Loose fitting needle
bearing will move out of position and cause repeated failures.
1. Apply a thin coat of Quicksilver 2-4-C with Teflon Lubricant to driveshaft needle bear-
ing bore in gear housing.
2. By way of propeller shaft cavity, place needle bearing in driveshaft bore with num-
bered side of bearing facing up driveshaft bore.
Page 6A-26
CAUTION
CAUTION
90-883728 JULY 2001