Mercury 225 EFI, Service Manual

Page: 603 / 719

LEFT HAND NON-RATCHETING
90-884294 OCTOBER 2001 Page 6B-39
DRIVE SHAFT ASSEMBLY - INSPECTION
1. Clean all parts with a suitable solvent and dry the parts using compressed air. DO NOT
spin the bearings.
2. The condition of the drive shaft bearing cup is an indication of the condition of the ta-
pered roller bearing on the drive shaft. Replace the bearing and bearing cup if the cup
is pitted, grooved, scored, worn unevenly, discolored from overheating, or has em-
bedded particles.
3. Inspect the bearing surface on the drive shaft where the needles of the lower pinion
bearing roll. Replace the drive shaft if it is pitted, grooved, scored, worn unevenly, dis-
colored form overheating, or has embedded particles.
4. Inspect the splines at both ends of the drive shaft for a worn or twisted condition. Re-
place the drive shaft if either condition exists.
5. Inspect the gear for pitting, chipped or broken teeth, hairline fractures, and excessive
or uneven wear. Replace the pinion gear and the forward gear if any defects are
found.
6. Inspect driveshaft for groove(s) where water pump base oil seals contact shaft. Re-
place driveshaft if groove(s) are found.
REASSEMBLY
1. Apply a light coat of Premium Gear Lubricant on l.D. of drive shaft tapered bearing.
Apply High Pressure Grease (such as Chicago Manufacturing and Distributing Lube
#3) to the O.D. of both bearings.
2. Assemble a new tapered roller bearing to the drive shaft with the large O.D. of the
bearing facing the pinion gear end of the drive shaft.
3. Thread a used pinion nut onto end of drive shaft. Leave approximately 1/16
″
(2mm)
of nut threads exposed. Drive shaft threads MUST NOT extend beyond nut or thread
damage could result while pressing.
4. Press the tapered roller bearing onto the drive shaft using the universal puller plate
and a suitable mandrel, (an old tapered roller bearing inner race).
a
b
c
d
e
a - Used Pinion Nut
b - Drive Shaft
c - Tapered Bearing(s)
d - Old Bearing Inner Race
e - Universal Puller Plate