1992 MAZDA PROTEGE oil

B2 DISASSEMBLY
CYLINDER BLOCK (EXTERNAL PARTS)
1. Disassemble in the order shown in the figure, referring to Disassembly Note.
I
@ma @a% GASST, REPLACE
GASKET,
REPLACE
/
d I @REPLACE
23UOB2-0
1. Water pump
Service ..,....,..,......,.,.,,.....,,.,.......... Section E
2. Timing belt pulley and lock bolt
Disassembly Note . . . . . ..,.,........,. page 82-49
Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 82-65
3. Clutch cover, clutch disc (MTX)
Service . . . , , . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Section H
4. Flywheel (MTX)
Disassembly Note ,.. . . . . . . . . . . . . . . . . . page 82-49
Inspect for wear or damage
5. Backing plate, drive plate, and adapter (ATX)
Disassembly Note . . . . ,., ,..... . . . . . . . page B2-49
6. End plate 7. Oil pan and gasket
Disassembly Note .,.................. page 82-49
Inspect for damage
8. Oil strainer
9. Main bearing support plate (MBSP)
Disassembly Note . . . ., . . . . . ..,.... . . . page B2-50
Inspect for damage
10. Oil pump
Service . . . , . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Section D
11. Front oil seal
Disassembly Note .,.................. page 82-50
12. Rear cover
13. Rear oil seal
Disassembly Note . . . . . . . . . . . . . . . . . . . . page B2-50
B2--48

DISASSEMBLY
23UOW056
03UOB2-073
Disassembly Note
Timing belt pulley
1. Hold the flywheel or the drive plate with the SST or
equivalent.
2. Loosen the pulley lock bolt.
3. Remove the pulley lock bolt.
4. Remove the timing belt pulley.
5. Remove the pulley Woodruff key.
23UOB2-049
Flywheel (MTX)
1. Hold the flywheel with the SST or equivalent.
2. Remove the flywheel lock bolts.
3. Remove the flywheel.
Backing plate, drive plate, and adapter (ATX)
1. Hold the drive plate with the SST or equivalent.
2. Remove the drive plate lock bolts.
3. Remove the backing plate, drive plate, and adapter.
Oil pan
1. Remove the oil pan mounting bolts.
Caution
l Do not force a prying tool between the cylinder
block and the oil pan, which may damage the con-
tact surfaces.
l Do not damage or scratch the contact surfaces
when removing the old sealant.
2. Insert a screwdriver or a suitable tool only at the points
shown in the figure.
3. Remove the oil pan.
82-49

82 DISASSEMBLY
-. 05UOBX-10
-
REAR COVER
-.
05UOBX-10
Main bearing support plate (MBSP)
1, Remove the MBSP mounting bolts.
Caution
l Do not damage or scratch the contact surfaces
when removing the old sealant.
2. Insert a screwdriver or a suitable tool at the points shown
in the figure.
3. Remove the MBSP.
Front oil seal
1. Remove the oil seal with a screwdriver protected with a rag.
Rear oil seal
1. Remove the oil seal with a screwdriver protected with a rag.
92-50

B2
CYLINDER BLOCK (INTERNAL PARTS)
1. Disassemble in the order shown in the fioure, referring to Disassembly Note.
I. Connecting rod cap 7. Piston
Disassembly Note ,..,.,., ,.,..... ,, ,. page B2-52 Inspection ,.. . . ,.. . . . . . . . . . page 82-62
2. Connecting rod 8. Main bearing cap
Disassembly Note ..,.. . . . . . . ,. page B2-52 Disassembly Note .,,,..,..,...... ~.,. page 82-53
Inspection . . . . . . . . . . . . . . . . . . . . . . . page B2-63 9. Crankshaft
3. Connecting rod bearing Disassembly Note ,... . . . . . . page 92-53
Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page B2-64 Inspection ,......,,.,._.................... page B2-64
4. Piston ring 10. Main bearing
Disassembly Note .,...........,.,..,. page B2-52 Inspection ., ,... . . . page B2-64
Inspection ..~ ,., . . . . . . . . . page B2-62 Il. Thrust bearing
5. Piston pin clip 12. Oil jet
6. Piston pin Inspection ,..,..,., ,..,.., . . . . . . . . . . . . . . . . page B2-61
Disassembly Note ,.. . . . . . . page B2-52 13. Cylinder block
Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 82-63 Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page B2-60
B2-51

82 DISASSEMBLY
03UOB2-071 6
- ____-______---..----. 05UOBX 113
------ -__ .---
7
Disassembly Note
Connecting rod cap
1. Before removing the connecting rod caps, measure the con-
necting rod side clearance. (Refer to page B2-71.) 1
Connecting rod
1. Before removing the connecting rods, measure the connect-
ing rod oil clearance. (Refer to page B2-71.)
2. Remove the Plastigage from the crankpin journals,
Caution
l Do not scratch the crankshaft journal or the cylin-
der wall.
-,
3. Use the handle of a hammer to remove the piston and con-
necting rod assembly through the top of the cylinder block.
Piston ring
Caution
l Do not apply excessive tension, which may cause
the rings to snap out.
1. Remove the piston rings with a piston ring expander (com-
mercially available).
Piston pin
1. Remove the piston pin with the SST.

DISASSEMBLY
03UOBZO7i
Main bearing cap
1. Before removing the main bearing caps, measure the crank-
shaft end play. (Refer to page 62-70.)
2. Loosen the main bearing cap bolts in two or three steps
in the order shown in the figure.
3. Remove the main bearing caps.
Crankshaft
1. Before removing the crankshaft, measure the main bear-
ing oil clearances. (Refer to page 82-69.)
03UOB2-079
B2-53

I32 INSPECTION / REPAIR
INSPECTION / REPAIR
PREPARATION
SST
49 6012 005 49 6012 005
Remover & Remover &
installer, valve installer, valve
guide guide
49 LO12 002
Body
(Part of
49 LO12 OAO)
49 LO12 004
Nut
(Part of
49 LO12 OAO) For
removal of
valve guide
For
installation of
valve guide
For
installation of
valve guide 49 LO12 OAO
Installer set,
valve seal &
valve guide
49 LO12 003
Installer
(Part of
49 LO12 OAO) For
installation of
valve guide
For
installation of
valve guide
05UOBX-1
1. Clean all parts, being sure to remove all gasket fragments, dirt, oil or grease, carbon, moisture residue,
and other foreign materials.
2. Inspection and repairs must be performed in the order specified. -.,
Caution
l Do not damage the joints or friction surfaces of aluminum alloy components (such as the cyl-
inder head or pistons).
0311082-162
03UOB2-70 OWOBX-119
CYLINDER HEAD
1, Inspect the cylinder head for damage, cracks, and leakage
of water and oil. Replace the cylinder head if necessary.
2. Measure the cylinder head distortion in the six directions
shown in the figure.
Distortion: O.lOmm (0.004 in) max.
Cautlon
l Before grinding the cylinder head, check the follow-
ing and repair or replace the cylinder head as
necessary.
Sinking of valve seats
Damage of manifold contact surface
Camshaft oil clearances and end play
3. If the cylinder head distortion exceeds specification, grind
the cylinder head surface.
If the cylinder head height is not within specification, replace
it. Height: 133.8-l 34.0mm (5.268-5.276
in)
Grinding: O.lOmm (0.004 in) max.
62-64

INSPECTION / REPAIR B2
23UOB2-06
051JOBX.14
05UOBX.14
OWOBX-14
05UOBX-14
5. Measure the journal diameters in X and Y directions at the
two points (A and 8) shown.
Diameter:
25.940-25.965mm (1.0213-l .0222 in)
Out-of-round: 0.03mm (0.001 in) max.
6. Measure the camshaft journal oil clearances.
Caution
l Do not install the HLA when measuring the oil
clearance.
(1) Remove all foreign material and oil from the journals and
bearing surface.
(2) Set the camshaft onto the cylinder head.
(3) Position Plastigage atop the journals in the axial
direction.
(4) Install the camshaft caps according to the cap number
and arrow mark.
(5) Install the camshaft cap bolts and tighten them in two
or three steps in the order shown in the figure.
Tightening torque:
11.3-14.2 N-m (1.15-l .45 m-kg, loo-126 in-lb)
(6) Loosen the camshaft cap bolts in two or three steps in
the order shown in the figure.
(7) Remove the camshaft caps.
82-59