600 SRM 496
Crankshaft and Main Bearings Repair
1.
REAR OIL SEAL
SURFACE
2.
CONNECTING
ROD JOURNALS
3.
MAIN BEARING
JOURNALS
4.
FRONT OIL SEAL
SURFACE
Figure 27. Crankshaft Inspection
b. Put plastic gauge material on journals and
install main bearing caps.
Tighten cap-
screws for bearing caps to 84 to 90 N•m (62
to 66 lbf ft).
c.
Remove bearing caps. Plastic gauge material
will adhere to journals or bearing caps.
d. Use graduations on scale to measure width
of plastic gauge material at its widest point.
Correct clearance is 0.031 to 0.049 mm
(0.0012 to 0.0019 in.).
If any clearance is
greater than specification, replace all main
bearings.
1.
PLASTIC GAUGE
MATERIAL
2.
SCALE
Figure 28. Main Bearings Clearance Check
INSTALL
1.
Clean areas of cylinder block around main bear-
ings. Carefully install bottom half of new main
bearings if necessary. Lubricate bearings with
clean engine oil.
2.
Install crankshaft.
3.
Install top half of main bearings in caps and
lubricate with oil. Use identification marks to
install main bearing caps in correct locations.
Tighten capscrews for main bearing caps to 84
to 90 N•m (62 to 66 lbf ft).
4.
Install pistons and connecting rods as described
in Pistons and Connecting Rods Repair.
5.
Make sure O-ring is in oil pump housing. Lubri-
cate oil seal with engine oil. Use adhesive sealant
to install housing to cylinder block. Make sure
there is no sealant in oil port. Tighten M10 cap-
screws to 38 to 53 N•m (28 to 39 lbf ft). Tighten
M8 capscrews to 19 to 26 N•m (14 to 19 lbf ft).
6.
Lubricate surfaces of oil seal with engine oil. Use
press to install oil seal in rear cover. Install align-
ment pin in cylinder block.
7.
Install gasket and rear cover.
See Figure 29.
Make sure dowel pin is installed. Tighten cap-
screws to 8 to 12 N•m (6 to 9 lbf ft). Cut off
part of gasket that extends past bottom of cylin-
der block.
11
