Valve Mechanism Inspection (4.0L); Valve And Valve Guide Inspection (4.0L) - Mazda B-Series 1997 Workshop Manual

INSPECTION I REPAIR
B3
8 '
STEM TIP
VALVE MECHANISM
Valve and Valve Guide
1. Inspect each valve for the following. Replace or resurface
as necessary:
(1) Damaged or bent stem
(2) Rough or damaged face
(3) Damaged or unevenly worn stem tip
MB1017-A
2.
Measure the valve stem diameter and replace the valve if
/
/
/
necessary.
Diameter
Standard
IN: 8.02-8.04mm (0.31 5 9 4 . 3 1 67 in)
EX: 8 . 0 0 4 . 0 1 mm (0.31 49-0.3'1 56 in)
Oversize4.20mm (0.008 in)
IN: 8.23-8.24mm (0.32394.3245 in}
EX: 8 . 2 0 4 . 2 1 mm (0.3228-0.3:235 in)
Oversize4.40mm (0.01 6 in)
IN: 8.43-8.44mm (0.3318-0.3324 in)
EX: 8.40-8.41 mm (0.3307-0.3:314 in)
3. Measure each valve guide inner diameter and record.
Inner diameter:
8.71--8.74mm (0.31 74-0.3184 iin)