Piston Ring Removal (4.0L); Piston Pin Removal (4.0L); Camshaft Removal (4.0L) - Mazda B-Series 1997 Workshop Manual

DISASSEMBLY
Piston ring
Caution
Do not apply excessive tension, which may cause
the rings to break.
Remove the piston rings using a piston ring expander
(commercially available).
MB1083-A 4BUOB3-106
Piston pin
1.
Before disassembling the piston and connecting rod,
check the oscillation torque. If the large end does not drop
by its own weight, replace the pistori or the piston pin.
2.Assemble Piston Pin Tool D81 L-6'135-A, or equivalent
into the piston pin as shown.
Caution
Verify that Piston Pin Tool 081 1.-6135-A, or equiva-
lent is fit squarely into the piston before pressing.
3. Press out the piston pin.
MB1084-A 4BUOB3-107
Caution
Mark the connecting rod direction for proper reas-
sembly.
Camshaft
1. Remove the thrust plate screws.
2. Remove the thrust plate.
3. Remove the camshaft.