oil MAZDA 626 1987 Workshop Manual

ON-VEHICLE MAINTENANCE (CYLINDER HEAD) 1 C
76G01C-037
Apply engine oil
/
Cylinder head bolt
below head length
76G01C-038
(8) (4; D (5)
® ®
76G01C-039
3m-kg
(21.7ft-lb
Installation
Cylinder head
1. Throughly remove all dirt and grease from the top
of the cylinder block with a rag.
2. Place the new cylinder head gasket in position.
3. Remove any dirt and grease from the bottom sur-
face of the cylinder head.
4. Place the cylinder head in position.
5. Measure the length of the cylinder head bolt be-
low the head. If the length exceeds the maximum,
replace the bolt.
Length: 113.2—113.8 mm (4.457—4.480 in)
Maximum: 114.5 mm (4.508 in)
6. Apply engine oil to the threads and the seat face
of the cylinder head bolts.
7. Tighten the cylinder head bolts.
(1) Tighten the bolts to the specified torque, in the
order shown in the figure.
Tightening torque:
29 N-m (3.0 m-kg, 22 ft-lb)
(2) Make paint marks on the bolt heads, as shown
in the figure.
(3) With the paint marks as a reference point, turn
the cylinder head bolts another 90°
(90°—105°) in the tightening direction. Tight-
en them in the order.
(4) Then tighten them once again 90°
(90°—105°) in the tightening order.
Caution
Be absolutely sure that the bolts are tightened
in the proper order.

76G01C-044

1C—20

1 C ON-VEHICLE MAINTENANCE (CYLINDER HEAD)
76G01C-045
Gasket
Head cover Apply sealant
J
76G01C-046
76G01C-047
Timing marks
Timing marks
Timing
marks-
Injection pump pulley
1. Install the injection pump pulley with the semicir-
cular (woodruff) key to the injection pump shaft.
2. Rotate the injection pump pulley until the timing
marks are aligned.
3. Affix the injection pump pulley to the bracket us-
ing two bolts (35—40 mm, 1.4—1.6 in).
4. Tighten the lock nut.
Tightening torque:
59—69 Nm (6.0—7.0 m-kg, 43—51 ft-lb)
Cylinder head cover
1. Apply sealant to the shaded areas.
2. Install the cylinder head cover.
Tightening torque:
7—10
N
m (70—100 cm-kg, 61—87 in-lb)
3. Install the PCV hose.
Timing belt
1. Return the crankshaft about 45° to the timing mark
on the oil pump housing.
2. Check that the timing marks of the camshaft pul-
ley and the injection pump pulley align with the tim-
ing marks on the seal plate.
3. Install the timing belt. (Refer to TIMING BELT of
ON-VEHICLE MAINTENANCE)
76G01C-048
1C-22

1 C ON-VEHICLE MAINTENANCE (VALVE SEAL)
VALVE SEAL
Removal
1. Disconnect the negative battery cable.
2. Remove in the sequence shown in the figure referring to the removal note for specially marked parts.
76G01C-052
76G01C-053
1. Cylinder head cover 7. Tappet and adjusting disc
2. Timing belt (Refer to page 1C—11) 8. Valve keeper
3. Camshaft pulley 9. Upper valve spring seat
4. Rear camshaft pulley 10. Valve spring
5. Camshaft cap 11. Lower valve spring seat
6. Camshaft and oil seal 12. Valve seal
1C—24

1 C ON-VEHICLE MAINTENANCE (VALVE SEAL)
Valve seal
1. Plug the oil drain hole with a rag to prevent the posi-
bility of the valve keepers from falling into the oil
pan.
2. Turn the crankshaft to position the piston of the
valve seal to be replaced at top dead center.
3. Remove the valve keepers with the SST.
76G01C-057
4. Remove the valve spring and spring seats.
5. Remove the valve seal with the SST.
Caution
Do not turn the crankshaft while the valve
spring is removed. Replace the valve seals at
every cylinders.
76G01C-058
1C—26

ON-VEHICLE MAINTENANCE (VALVE SEAL) 1 C
Installation
Install in the reverse order of removal referring to the installation note.
Torque Specifications
20—26 N-m (2.0—2.7 m-kg, 14—20 ft-lb)
N-m (5.6—6.6 m-kg, ft-lb)
55—65 N m (5.6—6.6 m-kg, 41—48 ft-lb)
76G01C-243
Installation note
Valve seal
1. Apply engine oil to the inside of the new valve seal.
2. Push it on gently with the SST.
86U01X-049
1C—27

1 C ON-VEHICLE MEINTENANCE (VALVE SEAL)
3. Install the spring seat, valve springs and valve
keepers with the SST.
76G01C-059
Tappet and adjusting disc
1. Apply engine oil to the tappets.
2. Install the tappets in the hole.
3. Install the adjusting discs.
76G01C-060
Camshaft and camshaft cap
1. Move the No.1 piston to TDC, and then rotate
the crankshaft approximately 45°
76G01C-061
' Apply sealant
2. Apply engine oil to the camshaft and the journals.
3. Apply a coat of sealant to the shaded areas as
shown in the figure.
76G01C-062
1C-28

ON-VEHICLE MAINTENANCE (VALVE SEAL) 1 C
4. Set the camshaft and camshaft cap so that the key
groove faces directly upward.
And tighten the cap nuts loosely.
5. Apply a coat of engine oil to the new oil seal lip
and insert it.
76G01C-063
6. Tighten the camshaft cap nuts gradually and in the
order shown in the figure.
Tightening torque:
20—26 N-m (2.0—2.7 m-kg, 14—20 ft-lb)
76G01C-064
Camshaft pulley and rear camshaft pulley
Hold the camshaft with a wrench (29 mm, 1.14 in),
tighten the camshaft pulley and rear camshaft pul-
ley lock bolts.
Tightening torque:
55—65 N-m (5.6—6.6 m-kg, 41—48 ft-lb)
76G01C-066
1C—29

1 C ON-VEHICLE MAINTENANCE (VALVE SEAL)
2. Check that the timing marks of the camshaft pul-
ley and the injection pump pulley align with the tim-
ing marks on the seal plate.
3. Install the timing belt. (Refer to TIMING BELT of
ON-VEHICLE MAINTENANCE)
76G01C-067
Valve clearance
Measure the valve clearance, and adjust if necessary.
(Refer to page 1C—85).
76G01C-068
Gasket
Head cover App|y sealant
Cylinder head cover
1. Remove the rag pluged oil return hole.
2. Apply sealant to the shaded areas as shown in the
figure.
3. Install the cylinder head cover.
Tightening torque:
7—10 Nm (70—100 cm-kg, 61—87 in-lb)
4. Perform the necessary engine adjustments by
referring to TUNE-UP PROCEDURE section.
76G01C-069
1C-30

REMOVAL 1C
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.
76G01C-071
1. Battery and battery carrier
2. Accelerator cable
3. Air cleaner assembly
4. Radiator harness
5. Radiator hose
6. Radiator and cooling fan
7. Brake vacuum hose
8. Intercooler pipe and hose*
9. Fuel hose
10. Drive belt cover
Note
11. P/S pump
12. No.4 engine mount
13. Clutch release cylinder
14. Speedometer cable
15. Transaxle harness
16. A/C compressor
17. Engine harness
18. Heater hose
19. Front wheel
20. Engine side cover
21. Tie-rod end
22. Stabilizer control rod
23. Lower arm bushing
24. Driveshaft
25. Change rod
26. Extension bar
27. Exhaust pipe and stay
28. Engine mount
29. Engine and transaxle
30. Transaxle
marked parts are equipped only for RF-CX.
1C-31

DISASSEMBLY (AUXILIARY PARTS) 1 C
1. A/C compressor bracket 9. Alternator and drive belt
2. Vacuum pump and drive belt 10. Oil filter
3. Air funnel assembly 11. Oil filter cover
4. Comprex supercharger insulator 12. Oil cooler assembly
5. Comprex supercharger and drive belt 13. Exhaust pipe bracket
6. Exhaust manifold insulator 14. Alternator bracket
7. Exhaust manifold 15. Blow-by chamber
8. Intake manifold
Blow-by chamber
76G01C-074
Disassembly Note
Engine hanger
1. Remove the CSD hose.
2. Loosen the vacuum pump oil pipe bolts.
76G01C-075
3. Install the engine on the SST.
76G01C-076
1C—35