Chrysler neon 1997 Service Manual page 447

9 - 34 2.0L SOHC ENGINE
REMOVAL AND INSTALLATION (Continued)
Fig. 64 Crankshaft Seal Special Tool 6926-2
Fig. 65 Rear Crankshaft Seal—Installation
6792–2 INSTALLER SPECIAL 6926–1 PILOT TOOL SPECIAL INSTALLER 6926–2 TOOL SPECIAL TOOL
SEAL
CRANKSHAFT
REMOVAL
(1) Remove oil filter and adapter from bedplate.
(2) Remove oil pan.
(3) Remove crankshaft sprocket and oil pump both
procedures outlined in this section.
(4)
bolts from the engine block (Fig. 66).
(5) Using a mallet tap the bedplate loose from the
engine block dowel pins.
CAUTION: Do not pry up on one side of the bed-
plate. Damage may occur to cylinder block and bed-
plate alignment.
(6) Bedplate should be removed evenly from the
cylinder block dowel pins.
(7) Lift out crankshaft from cylinder block. Be sure
not to damage the main bearings or journals when
removing the crankshaft.
CRANKSHAFT MAIN BEARINGS LOCATION
The crankshaft is supported in five main bearings.
All upper bearing shells in the crankcase have oil
grooves. All lower bearing shells installed in the (bed-
plate) main bearing cap are plain. Crankshaft end
play is controlled by a flanged bearing on the number
three main bearing journal (Fig. 67).
NOTE: The upper and lower main Bearing shells
are Not interchangeable. The lower shells have a
revised tab to prevent improper installation.
CRANKSHAFT MAIN JOURNALS INSPECTION
The crankshaft journals should be checked for
excessive wear, taper and scoring. Limits of taper or
out-of-round on any crankshaft journals should be
held to .025 mm (.001 inch). Journal grinding should
not exceed .305 mm (.012 inch) under the standard
journal diameter. DO NOT grind thrust faces of
Number 3 main bearing. DO NOT nick crank pin or
bearing fillets. After grinding, remove rough edges
from crankshaft oil holes and clean out all passages.
CAUTION: With the nodular cast iron crankshafts
used it is important that the final paper or cloth pol-
ish after any journal regrind be in the same direc-
tion as normal rotation in the engine.
Upper and lower Number 3 bearing halves are
flanged to carry the crankshaft thrust loads and are
NOT interchangeable with any other bearing halves
in the engine (Fig. 67). All bearing cap bolts removed
during service procedures are to be cleaned and oiled
before installation. Bearing shells are available in
standard and the following undersized: 0.016 mm
Remove all main bearing cap and bedplate
PL