Timing Belt Outer Cover; Checking Camshaft Timing; Adjusting Camshaft Timing - Mazda B-Series 1997 Workshop Manual

B1
ON-VEHICLE MAINTENANCE
9. Tighten adjusting bolt.
Tightening torque:
3 5 4 5 N
.
m (3.6-4.6 kgf
.
m, 26-33
ft
.
lbf)
10. Tighten spring pivot bolt.
Tightening torque:
40-55 N. m f4.1-5.5 kgf
.
m, 3 0 4 0 ft
.
lbf)
11. Release the timing belt tensioner pulley. Rotate clock-
wise the engine two complete revoutions and check the
camshaft timing. (Refer to below.)
12. If necessary, adjust the camshaft timing. (Refer to
below.)
6BUOB1-006
Timing belt outer cover
Install the timing belt outer cover
Tightening torque:
8-1 2 N
.
m (0.8-1.1 kgf
.
m, 6-8 ft Ibf)
4BUOB1-021
Adjustment
Checking camshaft timing
Note
Two access plugs are provided in the timing belt
outer cover so that camshaft timing can be checked
without removal of the cover or any other parts.
1. Remove the access plugs from the timing belt outer cover
if necessary.
2. Rotate the crankshaft so that the No.1 piston is rising on
compression stroke.
3. Set the crankshaft to TDC by aligning the circular timing
mark on the timing belt pulley with the TDC mark on the
engine front cover with the crankshaft key pointing straight
UP.
Caution
Always turn the engine in the direction of normal
rotation (clockwise, as viewed from the front). Back-
ward rotation may cause the timing belt to jump
time, due to the arrangement of the belt tensioner.
4. Look through the access hole in the timing belt outer
cover, to make sure that the triangular timing mark on the
camshaft pulley is lined up with the triangle on the timing
belt inner cover and that the diamond on the oil pump
pulley aligns with the diamond on the timing belt inner
cover.
5. If the marks on the camshaft pulley and timing belt pulley
are not visible, rotate the crankshaft 360 degrees, align
1
the marks and check again.
6. If necessary, adjust the camshaft timing. (Refer to below.)
7.
Install the access plugs.
Adjusting camshaft timing
1. Remove the timing belt outer cover.
2.
If belt timing is incorrect, loosen the belt tensioner spring
bolt and the adjustment bolt. Position the SST on the
tension spring roll pin, and retract the belt tensioner.
Tighten the adjustment bolt to hold the tensioner in the
retracted position.