Camshaft Bearings Installation; Camshaft Installation - Mazda B-Series 1997 Workshop Manual

ASSEMBLY
INSTALLED
SPRING HEIGHT
38.635-40.546mm
(1.52-1.59 inch)
/
CAM BEARING REPLACER
T71 P-6250-A
2.Check the installed height of the spring and damper
assembly
.
Note
Spring and damper assembly must be com-
pressed beyond the height of 27.5mm (1.08 in)
during assembly.
Spring and damper assembly installed height is
equivalent to valve spring installed height plus
damper material thickness of 1 .Ol mm (0.04 in).
If the assembled height is greater than specified,
install the necessary 0.76mm (0.030 in) thick
spacers between the cylinder head spring pad and
the valve spring damper assembly to bring the
assembled height to the recommended dimension.
Do not install spacers unless necessary. Use of
spacers in excess of recommendations will result
in overstressing the valve springs and overloading
the camshaft lobes. This could lead to spring break-
age and worn cam lobes.
Camshaft bearings
Install the camshaft bearings using Cam Bearing
Replacer T71 P-6250-A, or equivalent.
5BUOB1-070
Camshaft
Note
Camshaft must be positioned as shown to protect
protruding valves.
Install the camshaft through the camshaft bearings on the
cylinder head.
I I
MB1293-B 5BUOB1-096
Note
Make sure the threaded plug is in the rear of the
camshaft. If not, remove the threaded plug from the
old camshaft and install it.
Coat the camshaft lobes with multi-purpose grease
and lubricate the journals with heavy oil before
installation.
Carefully slide the camshaft through the bearings.