MAZDA 323 1989 Factory Repair Manual

ENGINE OIL, OIL FILTER D
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I
03UODX-00
ONODX-01
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03UODX-011
ENGINE OIL
INSPECTION
1. Be sure the vehicle is on level ground.
2. Warm up the engine to normal operating temperature and
stop it.
3. Wait for five minutes.
4. Remove the oil level gauge and check the oil level and con-
dition.
5. Add or replace oil as necessary.
Note
l The distance between the L and F marks on the level
gauge represents 0.8 liter (0.85 US qt, 0.70 Imp qt).
REPLACEMENT
Warning
l Be careful when draining; the oil is hot.
1. Warm up the engine to normal operating temperature and
stop it.
2. Remove the oil filler cap and the oil pan drain plug.
3. Drain the oil into a suitable container.
4. Install a new gasket and the drain plug.
Tightening torque:
29-41 N,m (3.0-4.2 m-kg, 22-30 ft-lb)
5. Refill the engine with the specified type and amount of en-
gine oil.
6. Refit the oil filler cap.
7. Run the engine and check for leaks.
8. Check the oil level and add oil if necessary.
Oil pan capacity
B6 SOHC
BP SOHC and DOHC
liters (US qt, Imp qt)
3.0 (3.2, 2.6)
3.6G.843.2)
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03UODX-011
D-7

D OIL FILTER, OIL COOLER
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OSUODX-0
‘I . 03UODX-01
OIL FILTER
REPLACEMENT
1. Remove the oil filter with a suitable wrench.
2. Use a clean rag to wipe off the mounting surface on the
engine.
3. Apply a small amount of clean engine oil to the rubber seal
of the new filter.
4. Install the oil filter and tighten it by hand until the rubber
seal contacts the base.
5. Tighten the filter 1 and 116 turns with a filter wrench.
6. Start the engine and check for leaks.
7. Check the oil level and add oil if necessary.
Oil filter capacity: 0.17 liter (0.18 US qt, 0.15 Imp qt)
OIL COOLER (BP DOHC)
REMOVAL
1. Drain the engine oil.
2. Remove the oil filter with an oil filter wrench.
3. Disconnect the water hoses.
4. Remove the oil cooler.
INSTALLATION
1. Install the oil cooler.
Tightening torque:
29-39 Nnrn (3.0-4.0 m-kg, 22-29 ft-lb)
2. Install the oil filter. (Refer to page D-8.)
3. Add engine oil to the correct level.
4. After installing the filter, check that there is no oil leakage
while the engine is running.
5. Recheck the oil level using the dipstick.
(Refer to page D-7.)

OIL PAN
OIL PAN
REMOVAL / INSTALLATION
1. Disconnect the negative battery cable.
2. Drain the engine oil.
3. Remove the under cover and side cover.
4. Remove in the order shown in the figure, referring to
Removal Note.
5. Install in the reverse order of removal, referring to Installation Note.
B6 SOHC
37-52 (3.8-5.3, 27-38)
I
GASKET,
REPLACE
9-94 (7.0-9.6, 51-69)
-52 ,a m-c .a .Y’)-*II
29-41 (3.0--/.2, 22-30)
_- ,r.rr--r-u, -.--““I ‘.8 11 Nm 4,
#O-r 10 cm-k% 69-96 in-lb) ,a&
7.8-l 1 N.m (SO-1 10 cm-kg, 69-96 in-lb)
1. Front exhaust pipe and bracket
2. Integrated stiffener
3. Oil pan
Removal Note ,...*..,,..*..,..*.......... page D-10
Inspect for cracks, deformation or damage
installation Note .,,.,..,,,.,.,......,.... Page D-l 1 4. Oil strainer
5. Main bearing support plate (MBSP)
Removal Note ,..,..I.,.......,........... page D-l 1
Installation Note .,..,,.,.....,,.....,..,.. page D-l 1
D-9

D OIL PAN
BPSOHCANDDOHC 37-52 (3.8-5.3, 27-38)
I -
16-21 (1.8-2.1, 12-15)
---P 31-46 (3.2-4.7, 23-3’
37-52 (3.8-5.3, 27-36
Ax. GASKET. 1
REPLACE,
cd h 37-52 (3.8-5.3, 27-38) GiSKET,
REPLACE
/ 29-41 (3.0-4.2, 22-30)
-v
44

7.6-l 1 N.m (80-l 10 cm-kg, 69-95 in-lb) N.m (m-kg, ft-It
1 SUODX-0
1. Front exhaust pipe and bracket 3. Oil strainer
2. Oil pan 4. Main bearing support plate (MBSP)
Removal Note . . . . . . . . . . . below Removal Note . . . . . . . . . . . . . . . . . . . . . . . . . . . . page D-l I
. . . . . . . . . . . . . . . . . . . . . . . . . .
Inspect for cracks, deformation and
damage
Installation Note *............,....,......* page D-l 1 Installation Note . . . . . . . . . . . . . . . . . . . . . . . . . . page D-l 1
Removal Note
Oil pan
B6 SOHC
1. Remove the oil pan mounting bolt.
2. Insert a screwdriver or a suitable tool between the MBSP
and oil pan, and pry them.
Caution
l Do not insert the prying tool between the MBSP and
cylinder block.
l Do not damage or scratch the contact surfaces.
3. Remove the oil pan.
D-IO

OIL PAN
BPSOHCANDDOHC
D
I. Remove the oil pan mounting bolts. .-_-__------- BPSOHCANDDOHC
23UODX-007
MAIN BEARING SUPPORT PLATE (MBSP)
! 03UODX-021
MAIN BEARING SUPPORT PLATE (MBSP)
‘OLD SEALANT ---1_1
OBUODX-0: !2
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. Rernove the oil pan.
Main bearing support plate (MBSP)
1. Remove the MBSP mounting bolt to the main bearing cap.
2. Insert a screwdriver or other suitable tool between the MBSP
and cylinder block, and pry them.
Caution
l Do not damage or deform the MBSP.
l Do not damage or scratch the contact surfaces.
Installation Note
Main bearing support plate (MBSP)
1. Remove all foreign material from the contact surfaces of the
cylinder block and MBSP.
Caution
l The oil pan must be secured within 5 minutes after
the sealant is applied to the MBSP.
2. Apply a continuous bead of silicone sealant to the MBSP
along the inside of the bolt holes.
3. Install the MBSP.
4. Tighten the MBSP bolts in two or three steps in the order
shown in the figure.
Tightening torque:
16-21 N.m (1.6-2.1 m-kg, 12-15 ft-lb)
D-l 1

OIL PAN
I 03UODX.02
05UOBX.20
1
05UODX-021
56 SOHC
03UODX-02
3P s
03UODX-02!
1. Remove all foreign material from the contact surfaces.
2. Apply silicone sealant to the contact surfaces of a new oil
pan gasket, shown in the figure.
3. Install new gaskets onto the oil pump body and the rear
cover with the projections in the notches shown in the figure.
4. Apply a continuous bead of silicone sealant to the oil pan
along the inside of the bolt holes and overlap the ends.
5. Install the oil pan.
B6 SOHC
Tightening torque:
7.6-11 N-m (80-110 cm-kg, 69-95 in-lb)
BP SOHC
Tightening torque
A : 7.8-l 1 N-m (80-l 10 cm-kg, 69-95 in-lb)
8 B : 37-52 N.m (3.8-5.3 m-kg, 27-38 ft-lb)
Steps After Installation
1. Install the under cover and side cover.
2. Fill with the specified amount and type of engine oil.
3. Connect the negative battery cable.
4. Start the engine and check for leaks.
5. Check the oil level and add oil if necessary.
D-12

OIL PUMP D
OIL PUMP
DISASSEMBLY / ASSEMBLY
1 Disassemble in the order shown in the figure, referring to Disassembly Note.
2: Assemble in the reverse order of disassembly, referring to Assembly Note.
FACE THE DIMPLE
TOWARD THE PUMP COVER
WHEN ASSEMBLING
O-90 cm-kg, 52-78 in-lb)
-8
23UODX-014
1. Oil seal
Disassembly Note . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . below
Assembly Note .,,..,.....,..,............ page D-14
2. Pump cover
Inspect for distortion or damage 6. Spring seat
7. Pressure spring
Inspection ..,..,.....,..,..,..,.............. page D-l 4
8. Control plunger
Inspect for wear or damage
9. Pump body
3. Outer rotor
4. Inner rotor
5. Roll pin
PROTECT PUMP
BODY WITH RAG
x9 05UODX-OC IO
Inspect for distortion or damage
Disassembly Note
Oil seal
1. Remove the oil seal with a screwdriver protected with a rag.
D-13

OIL PUMP
OWODX-032
r----‘---I ----
L-
---- 05UODX-033
r- __I_.__^--
_- .-.. --.-.__-----^---
---7--l
L-.-.LlLd-..- ..-.---A OWODX-034
___ll_--_l___-----------
___I- 1
.i
5
INSPECTION
Pressure Spring
1 Inspect the spring for weakness or breakage.
2. Measure the free length. Replace the spring if necessary.
Free length: 45.5mm (1.791 in) -
Rotor Clearance
1. Measure the following clearances. Replace the rotor if
necessary.
Tooth tip clearance: 0.20mm (0.0079 in) max.
Outer rotor to pump body clearance:
0.22mm (0.0087 in) max.
Side clearance: 0.14mm (0.0055 in) max.
Assembly Note
Oil seal
1, Apply a small amount of clean engine oil to the lip of a new
oil seal.
2. Push the oil seal slightly in by hand,
Caution
l The oil seal must be pressed in until it is flush with
the edge of the oil pump body.
-’
3. Press the oil seal in evenly with a suitable pipe.
Oil seal outer diameter: 44mm (1.73 in)

E
COOLING SYSTEM
INDEX ...................................................... E- 2
OUTLINE .................................................. E- 4
SPECIFICATIONS .................................... E- 4
TROUBLESHOOTING GUIDE ...................... E- 4
ENGINE COOLANT .................................... E- 5
PREPARATION ....................................... E- 5
INSPECTION ..........................................
REPLACEMENT ...................................... :z ;
RADIATOR CAP ........................................
PREPARATION ....................................... ;I ;
INSPECTION .......................................... E- 7
RADIATOR ............................................... E- 8
REMOVAL / INSTALLATION ...................... E- 8
INSPECTION .......................................... E- 9
THERMOSTAT .......................................... E- 9
REMOVAL / INSTALLATION ...................... E- 9
INSPECTION .......................................... E- 9
WATER PUMP .......................................... E-l 1
REMOVAL / INSTALLATION ...................... E-l 1
ELECTRIC COOLING FAN SYSTEM ............ E-13
SYSTEM CIRCUIT .................................... E-l 3
SYSTEM INSPECTION .............................. E-14
FAN MOTOR ............................................. E-14
INSPECTION .......................................... E-l 4
REPLACEMENT ...................................... E-l 5
WATER THERMOSWITCH .......................... E-l 8
REMOVAL / INSTALLATION ...................... E-18
INSPECTION .......................................... E-l 8
RADIATOR THERMOSWITCH ..................... E-l 7
REMOVAL I INSTALLATION ...................... E-17
INSPECTION .......................................... E-l 7
FAN RELAY .............................................. E-l 8
REMOVAL I INSPECTION .......................... E-l 8
INSPECTION .......................................... E-l 8
23UOEX-001

INDEX
B6 SOHC AND BP SOHC
COOLANT RESERVOIR
@ ENGINE COOLANT
TOTAL CAPACITY
MTX: 5.0 liters (5.3 US qt, 4.4 Imp qt)
ATX: 6.0 liters (6.3 US qt, 5.3 Imp qt)
1. Engine coolant 6. Electric cooling fan system
23UOEX-00
inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page E- 5
Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page E-
Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
page E- 2. Radiator cap
7
3. Radiator
Removal I Installation . . . . . . . ,.......... page E- 8
Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page E- 9
4. Thermostat
Removal / Installation . . . . . . . . . . . . . . . . . . page E- 9
Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page E- 9
5. Water pump
Removal / Installation ....t___.......... page E-i 1
System
Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
8. Water thermoswitch
Removal / Installation . . . . . . . . . . . . . . . . .
Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
9. Radiator thermoswitch (BP ATX) System
Removal I Installation . . . . . . . . . . . . . . . . . inspection . . . . . . . . . . . . . . . . . . . . . .
Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
IO. Fan relay
7. Fan motor
Removal / Inspection . . . . . . . . . . . . . . . . . page E-13
page E-14
page E-14
page E-15
page E-16
page E-16
page E-17
page E-l 7
page E-18 ..--’
E-2