ENGINES - 3A-6990-823225--1 1096
5. Remove remaining bearings (except front and
rear) in same manner. It will be necessary to posi-
tion pilot in rear camshaft bearing to remove rear
intermediate bearing.
72383
a - Index Pilot
b - Puller Screw
c - Driver
d - Bearing
b
c
d
a
6. Assemble driver on driver handle and remove
front and rear camshaft bearings by driving to-
ward center of cylinder block.
72384
a - Driver
b - Driver Handle
c - Bearing
b
c
a
Inspection
Clean camshaft bearing bores in cylinder block with
solvent and blow out with compressed air. Be sure
grooves and drilled oil passages are clean.
Installation
Front and rear bearings must be installed last as pilot
will not fit into bearing bores if bearings are installed.
Lubricate outer surface of new camshaft bearings
with engine oil to ease installation.
IMPORTANT: All camshaft bearings are not the
same. Be sure to install bearings in proper loca-
tions (Indicated by bearing manufacturer) and to
position bearings as follows (directional refer-
ences are in reference to engine in its normal op-
erating position):
• Front bearing must be positioned so that oil
holes are equal distance from 6 o’clock posi-
tion in the block. Intermediate and center
bearings must be positioned so that oil holes
are at the 5 o’clock position (toward left side
of block and at a position even with bottom of
cylinder bore). Rear bearing must be posi-
tioned so that oil hole is at the 12 o’clock posi-
tion.
1. Installing intermediate and center bearings:
a. Install nut and thrust washer all the way onto
puller screw, then position pilot in front cam-
shaft bearing bore and insert screw through
pilot.
b. Index center camshaft bearing, then position
appropriate size remover and installer tool in
bearing and thread puller screw into tool. Be
sure at least 1/2 in. (13 mm) of threads are en-
gaged.
c. Using two wrenches, hold puller screw and
turn nut until bearing has been pulled into po-
sition. Remove the remover and installer tool
and check to ensure that oil hole(s) in bearing
are positioned correctly.
d. Install intermediate bearings in same manner
being sure to index bearings correctly. It will
be necessary to position pilot in rear cam-
shaft bearing bore to install rear intermediate
bearing.
2. Installing front and rear bearings:
a. Install appropriate size remover and installer
tool on drive handle.
b. Index front bearing (as explained in “Impor-
tant” above), and drive it into position with
tool. Check position of oil hole(s) in bearing to
ensure bearing is positioned correctly.
c. Install rear bearing in same manner, being
sure to index bearing correctly.
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