drain bolt MAZDA 626 1987 Workshop Manual

1 A ON-VEHICLE MAINTENANCE (VALVE SEAL)
12-valve
O ® ® ® ©
Removal note
Timing belt
Remove the timing belt. (Refer to page 1A—14.)
Rocker arm and shaft assembly
Loosen the rocker arm shaft bolts in two or three steps
in the order shown in the figure.
76G01A-037
8-valve
CD © CD <D ©
® © ® ©
12-valve Valve seal
1. Remove the rocker arms and springs from the
rocker arm shaft.
2. Install the camshaft caps and rocker arm shafts
onto the cylinder head.
3. Plug the oil drain hole with a rag to prevent the pos-
sibility of the valve keepers from falling into the oil
pan.
86U01X-045
1A—27

1 C ON-VEHICLE MAINTENANCE (CYLINDER HEAD)
CYLINDER HEAD
Removal
1. Disconnect the negative battery cable.
2. Drain the engine coolant.
3. Remove in the sequence shown in the figure referring to the removal note for specially marked parts.
76G01C-031
1. Accelerator cable
2. Air cleaner
3. Brake vacuum pipe
4. Intercooler pipe and hose*
5. Drive belt cover
6. Vacuum pump drive belt
7. Fuel hose
8. Water temperature switch
connector
9. Glow plug connector
10. Water thermo switch con-
nector
11. Heat gauge unit connector
12. Boost air temperature sen-
sor connector*
13. Injection pipes
14. Upper radiator hose
15. Water hose
(thermostat—FIR)
16. Oil level gauge and stay
bolt
17. Oil pipe bolt
18. Timing belt (Refer to page
1C—11)
19. Cylinder head cover
20. Camshaft pulley
21. Rear camshaft pulley
76G01C-032
22. Injection pump pulley
23. Seal plate
24. Water hose and pipe
25. Comprex supercharger
drive belt*
26. Heat insulator*
27. Exhaust manifold stay
28. Front exhaust pipe
29. Cylinder head bolt
30. Cylinder head
31. Cylinder head gasket
32. Comprex supercharger*
33. Exhaust manifold
34. Intake manifold
Note
* marked parts are equipped only for the RF-CX.
1C-16

OIL PAN 2A
OIL PAN
REMOVAL
1. Disconnect the negative battery cable.
2. Drain the engine oil.
3. Remove in the sequence shown in the figure referring to the removal note for specially marked parts.
76G02A-009
5. Sub frame (RH)
6. Oil pan
7. Oil strainer
8. Stiffener (FE 8-valve...only ECE, 12-valve)
Removal Note
Oil pan
(DOHC)
1. Remove the oil pan mounting bolts.
2. Install the bolt ©from the mounting bolt or 10 mm
(0.39 in) bolts in the specified bolt holes ©(both
sides).
3. Screw in the bolts gradually and alternately to re-
move the oil pan.
Caution
Do not pry the oil pan to prevent damaging the
contact surface.
1. Exhaust pipe
2. Gusset plate (SOHC)
3. Clutch housing under cover (SOHC)
4. Performance plate (4WS)
2A-7

2A OIL PAN
4BG02X-037
76G02A-013
76G02A-014
(SOHC)
1. Remove the oil pan mounting bolts.
2. Insert a scraper or a suitable tool between the oil
pan and the stiffener or the cylinder block to sep-
arate them.
3. Remove the oil pan.
Caution
Do not bend the oil pan when prying loose.
INSPECTION
Check the following points. Repair or replace if
necessary.
1. Cracks, deformation, damage
2. Damaged drain plug threads
INSTALLATION
Install in the reverse order of removal referring to the
installation note.
Installation Note
Stiffener (FE 8-valve...only ECE, 12-valve)
1. Remove any dirt or other material from the con-
tact surface.
2. Apply silicon sealant to the stiffener around inside
of the bolt holes and overlap the ends.
3. Install the stiffener.
Tightening torque:
7—12 Nm (70—120 cm-kg, 61—104 in-lb)
Oil pan
1. Apply silicon sealant to the oil pan around inside
of the bolt holes and overlap the ends.
2. Install the oil pan.
Tightening torque:
7—12 Nm (70—120 cm-kg, 61—104 in-lb)
Caution (DOHC)
Oil pan projection and recession from the end
of the cylinder block must not be more than
1.5 mm (0.06 in).
2A—8

OIL PUMP 2A
OIL PUMP
REMOVAL
1. Disconnect the negative battery cable.
2. Drain the engine oil.
3. Remove in the sequence shown in the figure referring to the removal note for specially marked parts. 76G02A-015
DOHC
76G02A-016
1. Timing belt (Refer to Section 1B) 4. Timing belt pulley
2. Oil pan (Refer to page 2A—7.) 5. Oil pump
3. Timing belt pulley lock bolt
2A-9

2B TROUBLESHOOTING GUIDE
TROUBLESHOOTING GUIDE
Problem Possible Cause Remedy Page
Engine hard
starting

Improper engine
oil

Insufficient engine
oil

Replace
Add
oil

2B—
6

2B—
5
Excessive oil
consumption

Oil working
up or
working down
Oil leakage
Refer
to
Section
1C

As described below

Oil leakage
Loose drain plug
or
damaged washer
Faulty seal
at oil
pan and cylinder block
Damaged cylinder head cover and
its
seal
Loose
oil
pump body bolt, cylinder head cover bolt,
or

oil pan bolt
Damaged front housing gasket,
or
cylinder head gasket
Faulty
oil
seal(s)
Loose
oil
filter
Loose
or
damaged
oil
pressure switch
Tighten
or
replace
Repair
Replace
Tighten
Replace
Replace
Tighten
Tighten
or
replace
2B—10
2B—10
2B-
6
Oil pressure drop
Oil leakage
Insufficient
oil

Worn and/or damaged
oil
pump gear
Worn plunger (inside
oil
pump)
or
weak spring
Clogged
oil
strainer
Excessive
oil
clearance between main bearing
or
con-
necting
rod
bearing
As described above
Add
oil

Replace
Replace
Clean
Refer
to
Section
1C

2B-
5

2B—13
2B—14

Warning lamp il-
luminates while
engine running

Oil pressure drop
Malfunction
of oil
pressure switch
Malfunction
of
electrical system
As described above
Refer
to
Section
15

Refer
to
Section
15
76G02B-005
2B—4

OIL
COOLER AND
OIL
FILTER BODY 2B

OIL
COOLER AND
OIL
FILTER BODY
REMOVAL
1. Disconnect the battery negative cable.
2. Drain the engine oil and coolant.
3. Remove in the sequence shown in the figure.
76G02B-012
76G02B-013
1. Idler pulley
2. Water hose
3. Connector bolt
4. Oil cooler
5. Oil filter
6. Oil filter cover
7. Oil filter body
8. Plug
9. Pressure spring
10. Plunger control
11. Relief valve spring
12. Steel ball
INSPECTION
1. Inspect the oil cooler body for cracks or corrod-
ed. If necessary replace it.
2. Check the valves for damage or scoring if neces-
sary replace it.
3. Measure free length of each valve spring. If neces-
sary replace it.
Free length
Relief valve spring: 45.5 mm (1.79 in)
Pressure spring : 54.6 mm (2.15 in)
76G02B-014
2B-7

OIL PAN 2B
OIL PAN
REMOVAL
1. Disconnect the negative battery cable.
2. Drain the engine oil and coolant.
3. Remove in the sequence shown in the figure referring to the removal note for specially marked parts.
76G02B-019
1. Sub frame
2. Gusset plate
3. Clutch housing
under cover
4. Water pipe
5. Oil pan
6. Oil strainer
7. Stiffener (RF-CX)
36—54 N-m (3.7-5.5 m-kg, 27—40 ft-lb)"
8—11 Nm (80—110 cm-kg 69—95 In-lb)
N-m (3.6—5.3 m-kg, 27—38 ft-lb)
(80—110 cm-kg, 69—95 in-lb)
76G02B-020
Removal Note
Oil pan
1. Remove the oil pan mounting bolts.
2. Insert a scraper or a suitable tool between the oil
pan and the stiffener to separate them.
3. Remove the oil pan.
4. Remove the oil strainer and stiffener from the
engine.
Caution
Do not bend the oil pan when prying loose.
76G02B-021
2B-9

2B OIL PAN
INSPECTION
Check the following points. Repair or replace if
necessary.
1. Cracks, deformation, damage
2. Damaged drain plug threads
4BG02X-037
76G02B-022
INSTALLATION
Install in the reverse order of removal referring to in-
stallation note.
Installation Note
Stiffener (RF-CX)
1. Remove any dirt or other material from the con-
tact surfaces.
2. Apply a continuous bead of silicone sealant to the
stiffener along the inside of the bolt holes, and over-
lap the end.
3. Install the stiffener.
Tightening torque:
8—11 N-m (80—110 cm-kg, 69—95 in-lb)
Oil Strainer
Install the oil strainer and a new gasket.
Tightening torque:
8—11 N-m (80—110 cm-kg, 69—95 in-lb)
76G02B-023
2B—10
Oil Pan
Remove any old sealant from the bolts and bolt holes.
If old sealant can not be removed from the bolt, re-
place it.
Without gasket
(1) Remove any dirt or grease from the contact
surfaces with a rag.
(2) Apply continuous bead of silicon sealant to the
oil pan along the inside of the bolt holes, and
overlap the ends.
(3) Install the oil pan.
Tightening torque:
8—11 N-m (80—110 cm-kg, 69—95 in-lb)

2B OIL PUMP
OIL PUMP
REMOVAL
1. Disconnect the negative battery cable.
2. Drain the engine oil and coolant.
3. Remove in the sequence shown in the figure referring to the removal note for specially marked parts.
76G02B-026
6. Oil pan (Refer to page 2B—9)
7. Stiffener (RF-CX)
8. Oil strainer
9. Oil pump
Removal Note
Timing belt pulley lock bolt
Hold the timing belt pulley with the SST and remove
the lock bolt.
1. Timing belt (Refer to page 1C—11)
2. Camshaft pulley (Refer to page 1C—36)
3. Injection pump pulley (Refer to page
1C—36)
4. Seal plate
5. Timing belt pulley
2B-12