30
17. Turn the crankshaft to the 90° past the top dead center
(T.D.C.) position and remove the crankshaft out of the
crankcase opening while sliding the connecting rod
off the crankpin and crankshaft. TC type II engines
use a pressed in mechanically retained needle bearing
in the connecting rod. Older TC engines use loose
crankpin needle bearings, make sure to collect all 23
needle bearings. Engines built after Aug. 1995 may
also use loose needle bearings (grease retained), 36
needles are required (diag. 7-9).
18. Use a bearing splitter and an arbor press to remove
the ball bearing and cover assembly from the
crankshaft on TC type II if necessary.
19. Remove the oil seals by supporting the area around
the seal and using a small punch or screwdriver to
drive out the seal.
BEARING AND SEAL SERVICE
The crankcase and crankcase cover oil seals can be
removed by prying out or tapping out with a screwdriver.
On older TC engines, a retainer ring must be removed
with a pick before the crankcase bearing can be pressed
out (diag. 7-10).
Remove the needle bearing by using the bearing installer
tool (part # 670302) inserted from the outside to drive the
bearing out.
To install a new bearing in the engine crankcase, place a
new caged needle bearing on the installation tool (part #
670302). Use bearing installation tool (part# 670304A) for
installing the crankcase cover caged needle bearing. Place
the printed side of the bearing toward the installation tool.
Lightly oil the outside of the bearing and the crankcase
bearing bore. Press the bearing into the crankcase until
the tool is flush with the crankcase or cover housing. Insert
the retainer ring if applicable (diag. 7-11).
Install a new crankcase oil seal using seal protector /
installer (part # 670301). Use seal installer (part # 670303)
to install the crankcase cover oil seal. The metal case of
the seal goes onto the seal protector first. Lightly oil the
outside of the seal. Press the tool and seal in until the tool
is flush with the crankcase (diag. 7-12).
Later production TC engines have a step machined in the
crankcase and crankcase cover bearing area. This change
eliminated the need for a retainer ring. The bearing and
seal installation tools (part # 670302, 670303, 670304A)
can be used with either style of crankcase cover. The
installation tools place the bearing in the cover or the
crankcase to the proper depth.
Models equipped with a ball bearing in the crankcase cover
can have the ball bearing removed using an arbor press
with support placed near the bearing diameter. Press the
bearing out of the cover from the outside, pushing the
bearing away from the machined step.
A new crankcase cover ball bearing can be installed using
an arbor press. Press the bearing in until the bearing is
flush and the bearing contacts the machined step.
Seal protector / installer part # 670303 should be used to
install a new oil seal in the crankcase cover.
7-9
7-10
7-11
7-12
Needle Bearing Cover
Ball Bearing Cover
670303
670304A
670302
670301
Retainer Ring
Oil Seal
Bearing
Not For Resale
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