1987 MAZDA 626 timing

ASSEMBLY (TIMING BELT) 1 C
TIMING BELT
Torque Specifications
69G01B-160
Seal Plate
1. Install the seal plate.
Tightening torque:
8—12 N
m
(0.8—1.2 m-kg, 69—104 in-lb)
2. Check that the seal plate sealing rubbers are in-
stalled in position.

76G01C-200

1C—81

1C ASSEMBLY (TIMING BELT)
Rear Camshaft Pulley
1. Install the rear camshaft pulley.
2. Hold the camshaft with a wrench (29 mm, 1.14 in)
and tighten to the specification.
Tightening torque:
55—65 Nm (5.6—6.6 m-kg, 41—48 ft-lb)
76G01C-189
Camshaft Pulley
1. Connect the camshaft pulley onto the camshaft with
the semicircular (woodruff) key.
4BG01B-200
2. Hold the camshaft with a wrench (29 mm, 1.14 in),
tighten the camshaft pulley lock bolt.
Tightening torque:
55—65 Nm (5.6—6.6 m-kg, 41—48 ft-lb)
3. Align the mark on the camshaft pulley with the mark
on the seal plate.
76G01C-190
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 N-m (6.0—7.0 m-kg, 43—51 ft-lb)
1C-82

ASSEMBLY (TIMING BELT) 1 C
63G01D-431
76G01C-191
76G01C-192
Timing Belt Tensioner
1. Install the tensioner spring onto the tensioner.
2. Install the tensioner assembly.
3. Temporarily secure it so the tensioner is shifted
outward.
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 in the sequence shown in the
figure.
Caution
The timing belt must be reinstalled in the same
direction of rotation for continued durability.

76G01C-200

1C—83

1C ASSEMBLY (TIMING BELT)
jf^iLJF'
76G01C-194
Timing marks
Timing marks
76G01C-195
76G01C-196
4. Install the idler pulley.
Tightening torque:
37—52 N
m
(3.8—5.3 m-kg, 27—38 ft-lb)
5. Remove the two affixing bolts from the injection
pump pulley.
6. Loosen the tensioner lock bolt.
7. Turn the crankshaft twice in the direction of rota-
tion (clockwise).
Caution
Do not rotate in reverse direction.
8. Check that each timing mark is correctly aligned.
If not aligned, remove the timing belt. Repeat step
2-9.
9. Tighten the timing belt tensioner lock bolt.
Tightening torque:
37—52
N m
(3.8—5.3 m-kg, 27—38 ft-lb)
10. Check the timing belt tension.
If the tension is not correct, loosen the tensioner
lock bolt and repeat step 6—9, or replace the ten-
sioner spring.
Standard 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.
76G01C-197
1C-84

ASSEMBLY (TIMING BELT) 1 C
76G01C-198
4BG01B-210
76G01C-199
Timing Belt Cover
Install the left and right timing belt covers.
Tightening torque:
7—10 Nm (70—100 cm-kg, 61—87 in-lb)
Crankshaft Pulley
Install the crankshaft pulley.
Tightening torque:
23—32 Nm (2.3—3.3 m-kg, 17—24 ft-lb)
Valve Clearance
1. Set the No.1 cylinder to compression TDC.
2. Measure the valve clearance at No.1, No.2 (intake),
and No.1, No.3 (exhaust).
Clearance (cold engine)
IN : 0.20—0.30 mm (0.008—0.012 in)
EX: 0.30—0.40 mm (0.012—0.016 in)
3. If the valve clearance is not within the specifica-
tion, adjust the valve clearance.
(1) Face the intake cam lobe straight upward.
(2) Move the tappet so that its notch is at the man-
ifold side.
(3) Press the tappet down until the adjusting disc
is accessible with the SST.
(4) Take out the adjusting disc.
76G01C-200
1C—85

1C ASSEMBLY (TIMING BELT)
Cam (intake)
Adjust disc
Valve clearance
0.30 mm (0.012 in) 4.00 mm (0.157 in)
76G01C-201
(5) Select an appropriate disc depending on the
valve clearance measured. And install it.
Example (intake valve):
Thickness of original adjusting disc + (measured
clearance — standard clearance) = thickness of
new adjusting disc.
4.00 + (0.30 - 0.25) = 4.05 mm
0.157 + (0.012 - 0.010) = 0.159 in
Note
a) The disc thickness is indicated by the num-
ber marked on the disc. For example, 3825
means 3.825 mm (0.1056 in).
b) Adjusting discs are available in 25 different
thicknesses within the 3.40—4.60 mm
(0.134—0.181 in) range, at intervals of 0.05
mm (0.002 in).
(6) Inspect the clearance again.
4. Set the No.4 cylinder to compression TDC.
5. Measure and adjust the valve clearance at No.3,
No.4 (intake), and No.2, No.4 (exhaust) in the same
way.
76G01C-202
Gasket
Head cover Apply sealant
^ 1 §
Cylinder Head Cover
1. Apply sealant to the shaded areas.
2. Install the cylinder head cover.
Tightening torque:
7—10 Nm (70—100 cm-kg, 61—89 in-lb)
3. Install the PVC hose.
76G01C-203
1C—86

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

2A OIL PUMP
SOHC
1. Timing belt (Refer to Section
1
A)
2. Oil pan (Refer to page 2k—1)
3. Timing belt pulley lock bolt
76G02A-017
4. Timing belt pulley
5. Oil pump
Removal Note
Timing belt pulley lock bolt
Hold the timing belt pulley with the SST and remove
the lock bolt.
76G02A-026
2 A—10