1987 MAZDA 626 Workshop Manual

ON-VEHICLE MAINTENANCE (TIMING BELT) 1 A
76G01A-027
76G01B-024
76G01A-028
/Jf
ry.
2. Check that the mating mark of the camshaft pul-
ley is aligned with the timing mark. If it is not
aligned, turn the camshaft to align.
Note
For FE engine, align "2" mark.
For F8, F6 engine, align "3" mark.
3. Install the timing belt tensioner and spring. Tem-
porarily secure it with the spring fully extended.
Caution
Do not damage the pulleys when securing the
tensioner pulley.
4. Install the timing belt. (Keep the tension side of belt
as tight as possible).
Caution
a) If the timing belt is being reused, it must be
reinstalled to rotate in the original direction.
b) Check that there is no oil, grease, or dirt on
the timing belt.
5. Loosen the tensioner lock bolt.
6. Turn the crankshaft twice in the direction of rota-
tion, and align the mating marks.
7. Check that the timing marks are correctly aligned.
If not aligned, remove the timing belt tensioner and
timing belt, and repeat steps 1—6.
69G01B-027
1A-17

1 A ON-VEHICLE MAINTENANCE (TIMING BELT)
8. Tighten the timing belt tensioner lock bolt.
Tightening torque:
37—52 N-m (3.8—5.3 m-kg, 27—38 ft-lb)
69G01B-028
9. Check the timing belt deflection. If the deflection
is not correct, repeat the adjustment from step 5
above.
Timing belt deflection
FE: 5.5—6.5 mm (0.22—0.26 in)
F8, F6: 4.0—5.0 mm (0.16—0.20 in)
/98 N (10 kg, 22 lb)
Caution
Be sure not to apply tension other than that
of the tensioner spring.
76G01A-029
Baffle plate
Install the baffle plate as shown in the figure.
69G01B-030
Drive belt
Install each drive belt, and check the belt deflection.
(Refer to page 1A—7.)
76G01A-030
1A—18

1 A ON-VEHICLE MAINTENANCE (TIMING BELT)
Spark plug
1. Apply anti-seize compound or molybdenum-based
lubricant to the spark plug threads.
2. Install the spark plugs.
Tightening torque:
15—23 N-m (1.5—2.3 m-kg, 11—17 ft-lb)
79G01C-021
Steps After Installation
Perform the necessary engine adjustment. (Refer to
TUNE-UP PROCEDURE.)
86U01X-029
1A—19

1 A ON-VEHICLE MAINTENANCE (CYLINDER HEAD)
CYLINDER HEAD
Removal
Warning: Release the fuel pressure. (Refer to Section 4.)
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-110
1A—20

1 A ON-VEHICLE MAINTENANCE (CYLINDER HEAD)
1. High-tension lead and spark plug
2. Accelerator cable
3. Throttle cable (ATX)
4. Air intake pipe (Fl)
5. Air cleaner assembly (carb.)
6. Fuel hose
7. Fuel pump (carb.)
8. Upper radiator hose
9. Heater hose
10. Brake vacuum hose
11. Canister hose (Fl, Middle East)
12. Three-way solenoid assembly
13. Engine harness connector and ground
14. Secondary air pipe assembly (except
General)
15. EGR pipe (Fl, Unleaded carb.)
16. Exhaust manifold insulator
17. Exhaust pipe
18. Exhaust manifold
19. Gusset plate (Fl)
20. Intake manifold bracket (Fl)
21. Intake manifold assembly
22. Distributor
23. A/C compressor and bracket
24. Upper timing belt cover
25. Timing belt tensioner spring
26. Timing belt
27. Cylinder head cover
28. Cylinder head and gasket 76G01A-031
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.
Timing belt
1. Before removing the timing belt, turn the crankshaft
to align the mating mark of the camshaft pulley with
the front housing timing mark.
Note
For FE engine, align "2" mark.
For F8, F6 engine, align "3" mark.
2. Loosen the timing belt tensioner lock bolt.
3. Shift the tensioner outward as far as possible, then
temporarily tighten it.
1A—21

1 A ON-VEHICLE MAINTENANCE (CYLINDER HEAD)
69G01B-037
76G01A-111
4. Remove the timing belt and secure it out of the way
to prevent damage during removal and installation
of the cylinder head.
Cylinder head bolt
Loosen the cylinder head bolts in two or three steps
in the order shown in the figure.
Disassembly of Cylinder Head
Refer to page 1A—40.
Inspection of Cylinder Head
Refer to page 1A—48.
Assembly of Cylinder Head
Refer to page 1A—73.
76G01A-033
1A—22

ON-VEHICLE MAINTENANCE (CYLINDER HEAD) 1 A
Installation
Install in the reverse order of removal referring to the installation note.
Note a) Position the hose clamp in the original location on the hose.
b) Squeeze the clamp lightly with large pliers to ensure a good fit.
Torque Specifications
19—30
N
m (1.9—3.1 m-kg/' 14—22 ft-lb)
37—63
N m
(3.8—6.4 m-kg 27-46 ft-lb)
37—52 Nm (3.8 27—1
31—46 N-m (3.2—<

1 A ON-VEHICLE MAINTENANCE (CYLINDER HEAD)
Installation note
Cylinder head
1. Thoroughly remove all dirt and oil from the top of
the cylinder block with a rag.
2. Place a new cylinder head gasket in position.
86U01X-035
® (5)
CD
© (8)
3. Set the cylinder head in place.
4. Apply engine oil to the bolt threads and seat faces.
5. Tighten the cylinder head bolts in two or three steps
in the order shown in the figure.
Tightening torque:
80—86 N-m (8.2—8.8 m-kg, 59—64 ft-lb)
86U01X-036
Cylinder head cover
1. Apply silicon sealant to the shaded area shown in
the figure.
2. Install the cylinder head cover.
Tightening torque:
6—8
N
m (60—80 cm-kg, 52—69 in-lb)
86U01X-037
Timing belt
1. Align the mating mark of the camshaft pulley with
the front housing timing mark.
Note
For FE engine, align "2" mark.
For F8, F6 engine, align "3" mark.
2. Install the timing belt. (Refer to TIMING BELT of
ON-VEHICLE MAINTENANCE.)
76G01A-034
1A—24