1987 MAZDA 626 belt

ON-VEHICLE MAINTENANCE (TIMING BELT) 1 C
76G01C-027
76G01C-028
76G01C-029
Checking
point
Idler pulley
Crankshaft pulley zQi A/C
Checking point compressor
76G01C-030
10. Tighten the timing belt tensioner lock bolt.
Tightening torque:
37—52
N
m (3.8—5.3 m-kg, 27—38 ft-lb)
11. Check the timing belt tension.
If the tension is not correct, loosen the tensioner
lock bolt and repeat step 7—10, or replace the ten-
sioner spring.
Deflection: 9.0—11.5 mm
(0.35—0.45 in) /98 N (10 kg, 22 lb)
Caution
Be sure not to apply tension other than that
of the tensioner spring.
No.3 engine mount
Install the No.3 engine mount.
Tightening torque:
Nut A: 85—117 N-m
(8.7—11.9 m-kg, 63—86 ft-lb)
Nut B: 67—93 N-m
(6.8—9.5 m-kg, 49—69 ft-lb)
Drive belt
Install each drive belt, and check the belt deflection.
(Refer to page 1C—7.)
Steps after installation
Perform the necessary engine adjustment. (Refer to
TUNE-UP PROCEDURE,)
1C-15

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

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

ON-VEHICLE MAINTENANCE (CYLINDER HEAD) 1 C
76G01C-049
Injection pipe
1. Check that no dirt or other foreign material is on
the pipe coupling.
2. Install the injection pipes.
Tightening torque:
25—29 Nm (2.5—3.0 m-kg, 18—22 ft-lb)
3. Install the pipe clip.
Tightening torque:
4—6 N-m (40—60 cm-kg, 35—52 in-lb)
Vacuum pump drive belt
1. Install the vacuum pump drive belt, and adjust the
belt deflection. (Refer to 1C—7)
2. Install the drive belt cover.
Tightening torque:
8—11 Nm (80—110 cm-kg, 69—95 in-lb)
3. Connect the vacuum hose securely and squeeze
the clamp lightly with pliers to ensure a good fit.
76G01C-050
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.)
76G01C-051
1C—23

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

ON-VEHICLE MAINTENANCE (VALVE SEAL) 1 C
Removal note
Camshaft pulley
1. After removing the timing belt, turn the crankshaft
45° clockwise.
76G01C-054
2. Hold the camshaft with a wrench (29 mm, 1.14 in)
and loosen the camshaft pulley lock bolt.
Caution
Do not damage the cylinder head edge with
the wrench.
4BG01B-044
3. Separate the camshaft pulley from the camshaft
with the SST.
Caution
Do not hit the camshaft pulley with a hammer.
Rear camshaft pulley
Remove the rear camshaft pulley in the same man-
ner used for camshaft pulley.
76G01C-055
Camshaft cap
Loosen the camshaft nuts in two or three steps in the
order shown in the figure.

76G01C-066

1C—25

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