1985 Mercury Outboard V-300 V-3.4L Shop Service Manual, Page 178Get this manual
CLEANING and INSPECTION 1Clean forward gear and hearings with solve nt and dr with compressed air
ACAunON
DO NOT spin bearings dry with compressed
air, as this could cause bearing 10 score
aUniversal Puller Plate
bMandrel
Figure 6Removing Tapered Bea ring from Forward Gear
Ins peci gear teeth for piuinggroo vesscoring, uneve wear nd for discol oration (fr om ve rheating) Replace gear if an of these conditions are found 3Check cl utc jaws on forward gear for damageBeplace forward gear if damage is fo und4Inspec tapered bearing race for pillinggrooves, scoring, uneve wear and di scol oration (from overh eat ing)Re place tapered bearing (on forward gearand race if an of these conditions are found (Alwa ys replace ta pe red bear ing and race as se L) 5To deT rm ine condi tion of propeller shaft needle bea rings (in forward gear)in spect prope ller shaft fo rward geaT needle bearing surface as utlined inPropeller Shaft Ins pecti on"aSlide Hammer