lock MAZDA 626 1987 Manual Online

ON-VEHICLE MAINTENANCE (CYLINDER HEAD) 1 C
76G01C-041
76G01C-042
76G01C-043
Seal plate
1. Install the seal plate.
Tightening torque:
8—12
N
m (80—120 cm-kg, 69—104 in-lb)
2. Check that the seal plate sealing rubbers are in-
stalled in position.
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
N
m (5.6—6.6 m-kg, 41—48 ft-lb)
Camshaft pulley
1. Connect the camshaft pulley onto the camshaft with
the semicircular (woodruff) key.
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-044
1C—21

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 (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

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 DISASSEMBLY (TIMING BELT)
Injection pump pulley
1. Put two bolts of 35—40 mm (1.4—1.6 in) length
into the arms of the injection pump pulley and af-
fix them in the threaded hole of the injection pump
bracket.
2. Loosen the injection pump pulley lock bolt.
3. Separate the injection pump pulley from the injec-
tion pump shaft with the SST.
Camshaft pulley
1. 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.
2. 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.
4BG01B-087
76G01C-081
1C—38

DISASSEMBLY (CYLINDER BLOCK) 1 C
CYLINDER BLOCK—I
76G01C-091
1. Clutch cover
2. Clutch disc
3. Flywheel
4. End plate
5. Oil pan
6. Oil strainer
7. Stiffener (RF-CX)
8. Rear cover
9. Timing belt pulley
10. Oil pump assembly
Flywheel
1. Install the SST to the flywheel.
2. Remove the clutch cover, clutch disc and flywheel.
Timing belt pulley
1. Reverse the direction of the SST.
2. Remove the timing belt pulley.
76G01C-092
1C—43

1 C DISASSEMBLY (CYLINDER BLOCK)
Oil pan
1. Remove the oil pan mounting bolts.
2. Insert a scraper or a suitable tool between the oil
pan and the stiffener to separate them.
Caution
Do not bend the oil pan when prying loose.
3. Remove the oil pan.
86U01X-072
1C—44

DISASSEMBLY (CYLINDER BLOCK) 1 C
CYLINDER BLOCK—II
76G01C-093
1. Connecting rod cap
2. Connecting rod bearing
3. Connecting rod and piston
4. Piston ring
5. Snap ring
6. Piston pin
7. Main bearing cap
8. Crankshaft
9. Main bearing
10. Pilot bearing
11. Oil jet
12. Cylinder block
Disassembly Note
Connecting rod and cap
During disassembly, clean the bearing, connecting
rod, and crankpin, and measure the following:
1. Connecting rod side clearance. (Refer to page
1C-67.)
2. Crankpin oil clearance.(Refer to page 1C—66.)
76G01C-094
1C-45

1 C DISASSEMBLY (CYLINDER BLOCK)
Piston and connecting rod
1. Before disassembling the piston and connecting
rod, check the oscillation torque as shown in the
figure. If the large end does not drop by its own
weight, replace the piston or the piston pin.
76G01C-095
2. Remove the snap rings from the piston.
3. Remove the piston pin with the SST.
76G01C-249
76G01C-096
Main bearing cap
During disassembly, clean the bearings, main jour-
nals, and caps, and measure the following:
1. Crankshaft end play. (Refer to page 1C—65.)
2. Main journal oil clearance. (Refer to page 1C—64.)
Pilot bearing
Remove the pilot bearing from the crankshaft with the
SST.
76G01C-097
1C—46

INSPECTION AND REPAIR 1C
(2). Measure the inner diameter of the tappet hole
in the cylinder head.
Hole diameter:
34.99—35.01 mm (1.3776—1.3787 in)
2. Calculate the difference (clearance) between the
tappet diameter and hole inner diameter.
If the clearance exceeds the specification , replace
the tappet or the cylinder head.
Clearance: 0.10 mm (0.004 in) max.
76G01C-120
76G01C-121
76G01C-122
Camshaft
1. Set the front and rear journals on V-blocks.
Check the camshaft runout. Replace if necessary.
Runout: 0.10 mm (0.004 in) max.
2. Check the cam for wear or damage. Replace if
necessary.
3. Check the cam lobe height at the two points as
shown in the figure.
Height mm (in)
' " " Standard Mimimum
RF-CX IN 42.521 (1.6741) 42.11 (1.658) RF-CX EX 45.300 (1.7835) 44.90 (1.768)
RF-N IN 44.306 (1.7443) 43.90 (1.728) RF-N EX 45.300 (1.7835) 44.90 (1.768)
4. Measure wear of the journals in X and Y directions
at the two points as shown in the figure.
Diameter:
31.959—31.975 mm (1.2582—1.2589 in)
Out-of-round: 0.05 mm (0.002 in) max.

76G01C-144

1C-53