Checking The Valve Guides; Replacing The Valve Guides - Westerbeke 7.0 KW BGC -60Hz Technical Manual

Checking Valve Guides
Measure the clearance between the valve and guide bushing. If the clearance exceeds the specified limit,
replace those parts that have worn beyond the allowable limit.
Allowable Umit:
Intake 0.2774 in. (7.045 mm)
Exhaust 0.2774 in. (7.045 mm)
Measuring Method #1: Check each valve's deflection
with a mounted dial indicator by moving the valve stem
from side to side.
NOTE: Separate the valve from the valve seat
before measuring. Measure
at
a position closest
to the valve guide bushing.
Measuring Method #2: Check the difference between
the inner diameter of the guide bushing and the
diameter of the valve stem.
Replacing the Valve Guides
1. Remove the valve Seal from the valve guide.
2. Knock the guide out toward the opposite side of the
combustion chamber with a valve guide installer.
(Special Service Tool # 37725)
#37725
65
Westerbeke Generators