1987 MAZDA 626 engine

ON-VEHICLE MAINTENANCE (CYLINDER HEAD) 1 A
76G01A-035
Engine harness connector
Install the engine harness connectors.
Distributor
1. Apply engine oil to the O-ring, and position it on
the distributor.
2. Apply engine oil to the blade or gear.
3. Align the mating marks as shown in the figure
...8-valve.
4. Install the distributor with the marks facing straight
up.
5. Loosely tighten the distributor mounting bolt.
1. IG coil
2. Engine ground
3. Water tempera-
ture sensor
4. Water thermo
switch
5. Oxygen sensor
(Fl)
6. Injection harness
(Fl)
7. F/l solenoid
valve (Fl)
8. Throttle sensor
(Fl)
76G01A-113
Steps After Installation
1. Fill the radiator with the specified amount and type
of coolant.
2. Perform the necessary engine adjustments. (Re-
fer to TUNE-UP PROCEDURE.)

1
A—25

1 A ON-VEHICLE MAINTENANCE (VALVE SEAL)
VALVE SEAL
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.
76G01A-114
11. Fuel hose (carb.)
12. Rear housing
13. Rocker arm and shaft assembly
14. Camshaft cap (12-valve)
15. Camshaft
16. Valve keeper
17. Upper valve spring seat
18. Valve spring
19. Lower valve spring seat
20. Valve seal
1. Air cleaner assembly (carb.)
2. Air intake pipe (Fl)
3. High-tension lead and spark plug
4. Upper timing belt cover
5. Timing belt
6. Cylinder head cover
7. Camshaft pulley
8. Front housing
9. Distributor
10. Upper radiator hose
1A—26

1 A ON-VEHICLE MAINTENANCE (VALVE SEAL)
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
Valve spring
Cylinder head side
Valve spring
1. (12-valve)
Install the valve spring with the narrower pitch to-
ward the cylinder head side.
(8-valve)
Install the outer valve spring with the narrower pitch
toward the cylinder head side.
2. Install the valve keepers, and tap the end of the
valve stem lightly two or three times with a plastic
hammer to confirm that the keepers are all fully
seated.
76G01A-038
12-valve Rocker arm, rocker arm shaft
1. Remove the rocker arm shafts and camshaft caps.
2. (12-valve)
Assemble the rocker arms and springs to the shaft.
Note
a) The intake side shaft has twice as many oil
holes as the exhaust side shaft.
b) The stepped ends are the rear sides of both
intake and exhaust shafts.
76G01A-039
(8-valve)
Assemble the camshaft caps, rocker arms, and
springs, to the shafts.
Caution
Be sure both rocker arm shaft oil holes (in the
center camshaft cap) face each other.
76G01A-040
1A—30

ON-VEHICLE MAINTENANCE (VALVE SEAL) 1 A
Camshaft
1. Apply sealant to the shaded areas as shown in the
figure.
76G01A-041
2. Apply engine oil to the camshaft journals.
3. Install the camshaft with its dowel pin upward.
76G01A-042
12-valve
© © (D ® (5) © © ®
Rocker arm and shaft assembly
(12-valve)
1. Install the camshaft caps.
2. Install the rocker arm and shaft assemblies on the
cylinder head, and tighten them in three steps in
the order shown in the figure.
Tightening torque:
18—26 Nm (1.8—2.7 m-kg, 13—20 ft-lb)
76G01A-043
Caution
Be careful that the rocker arms or spacers do
not get caught between the shaft and cam-
shaft cap.
86U01X-052
1A—31

ON-VEHICLE MAINTENANCE (VALVE SEAL) 1 A
76G01A-044
86U01X-212
76G01A-045
(8-valve)
Install the rocker arm and shaft assemblies on the cyl-
inder head and tighten them in three steps in the or-
der shown in the figure.
Tightening torque:
18—26 N-m (1.8—2.7 m-kg, 13—20 ft-lb)
Front housing
1. Replace the oil seal in the front housing.
2. Apply engine oil to the oil seal lip.
3. Install the front housing along with a new gasket.
Tightening torque:
19—25 N-m (1.9—2.6 m-kg, 14—19 ft-lb)
Rear housing
Install the rear housing along with a new gasket.
Tightening torque:
19—25 N-m (1.9—2.6 m-kg, 14—19 ft-lb)
Camshaft pulley
1. Install the camshaft pulley so that the mating mark
is aligned with the camshaft dowel pin straight up.
Note
For FE engine, align "2" mark.
For F8, F6 engine, align "3" mark.
2. Tighten the lock bolt.
Tightening torque:
47—65 N-m (4.8—6.6 m-kg, 35—48 ft-lb)
Timing belt
Install the timing belt. (Refer to TIMING BELT of ON-
VEHICLE MAINTENANCE.)

86U01X-052

1A—32

1 A ON-VEHICLE MAINTENANCE (VALVE SEAL)
Valve clearance (8-valve)
Adjust the valve clearance. (Refer to page
1
A—10.)
Cylinder head cover
1. Apply silicon sealant to the shaded areas shown
in the figure.
2. Install the cylinder head cover.
Tightening torque:
6—8 N-m (60—80 cm-kg, 52—69 in-lb)
76G01A-116
Distributor
1. Apply engine oil to the O-ring, and position it on
the distributor.
2. Apply engine oil to the blade or gear.
3. Align the mating marks as shown in the figure
...8-valve.
4. Install the distributor with the marks facing straight
up.
5. Loosely tighten the distributor mounting bolt.
76G01A-035
Steps After Installation
1. Fill the radiator with the specified amount and type
of coolant.
2. Perform the necessary engine adjustments. (Re-
fer to TUNE-UP PROCEDURE.)
86U01X-055
1A—33

1A REMOVAL
REMOVAL
Warning: Release the fuel pressure. (Refer to Section 4.)
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.
76GG1A-117
1A—34

REMOVAL 1A
1. Battery and battery carrier 13. Three-way solenoid 22. P/S oil pump
2. Air cleaner assembly assembly 23. Engine side cover
3. High-tension lead 14. Canister hose (Fl, Middle 24. Front wheel
4. Accelerator cable East) 25. Tie-rod end
5. Throttle cable (ATX) 15. Heater hose 26. Stabilizer control rod
6. Fuel hose 16. Transaxle harness 27. Lower arm bushing
7. Radiator hose 17. Speedometer cable 28. Driveshaft
8. ATF hose (ATX) 18. Clutch release cylinder 29. Change rod (MTX)
9. Radiator harness (MTX) 30. Extension bar (MTX)
10. Radiator and cooling fan 19. Control cable (ATX) 31. Exhaust pipe
11. Engine harness 20. Drive belt 32. Engine mount
12. Brake vacuum hose 21. A/C compressor and 33. Engine and transaxle
bracket 34. Transaxle
76G01A-046
Removal Note
Fuel hose
Warning
a) Cover the hose with a rag because fuel will
spray out when disconnecting.
b) Keep sparks and open flame away from the
fuel area.
Plug the disconnected hoses to avoid fuel leakage.
76G01A-11E
P/S pump, A/C compressor
Remove the P/S pump and A/C compressor with the
hoses still connected to them, secure the pump and
compressor as shown in the figure.
67U01X-029
Driveshaft
Remove the driveshafts. (Refer to Section 9.) Slide
the SST into the transaxle.
86U01X-060
1A—35