Assembly Note -Upper Main Bearing, Crankshaft, Lower Main Bearing And Main Bearing Cap; Connecting Rod Caps Assembly Note - Mazda B-Series 1997 Workshop Manual

ASSEMBLY
1. Main bearing, upper
Assembly Note ................................ below
2.
Crankshaft
Assembly Note ................................ below
3.
Main bearing, lower
Assembly Note ................................ below
4. Main bearing cap
Assembly Note
................................
below
5. Pistcn
Assembly Note ...................... page 83-52
6. Piston pin
Assembly Note ...................... page 83-52
7. Connecting rod
Assembly Note ...................... page B3-52
8. Piston ring
Assembly Note ...................... page
B3-52
9.
Piston, piston pin, and connecting
rod assembly
Assembly Note ....................... page B3-53
10. Connecting rod bearing
Assembly Note
......................
page B3-53
11 .Connecting rod cap
Assembly Note
......................
page B3-53
12. Camshaft
Assembly Note
......................
page B3-55
13. Thrust plate
Assembly Note
Upper main bearing, crankshaft, lower main bearing
and main bearing cap
1. Measure the main bearing oil clearances as described
below:
(1) Remove any foreign material and oil from the jour-
nals and bearings.
(2) lnstall the upper main bearing:; with the tang in the
slot.
(3) lnstall the lower main bearings into the main bearing
caps.
(4) Install the crankshaft into the c:ylinder block.
(5) Position Plastigage atop the journals in the axial
direction.
(6) Apply clean engine oil to the threads and seat faces
of the main bearing cap bolts.
(7)
lnstall the main bearing cap.
(8) Tighten the main bearing cap bolts.
Tightening torque:
90-104 N-m (9.1-10.6 kgf-m, 66-77 ftelbf}
(9) Remove the main bearing cap.
(1 0) Measure the Plastigage at each journal at the widest
point for the smallest clearancle, and the narrowest
point for the largest clearance.
Oil clearance
Standard: 0.020--0.038mm (0.0008-0.0015 in)
Allowable: 0.01 27--0.0482mm (0.0005-0.0019 in}
(1 1) If the oil clearance exceeds the maximum, grind the
crankshaft and install undersize bearings. (Refer to
page 82-48.)
2.
Install the main bearing caps as follows:
(1 ) Remove the Plastigage from the journals and bear-
ings.
(2) Apply a liberal amount of clean engine oil to the main