Jacobsen SXG323, Руководство по обслуживанию

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CHAPTER 4. ENGINE
45
4
When the deviation exceeds the usable limit,
replace the manifold.
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(1) Disassembly of the rocker arm shaft assembly.
• Put an identification mark on the front side top
of the rocker arm shaft for later reference.
• Remove snap rings C and remove arm brackets.
• Put away the brackets in order.
(2) Inspection of the rocker arm shaft for bending.
• Check for bending with a dial gauge.
(3) Inspection of the rocker arm shaft for wear.
• Measure diameter at four points where the shaft
bears respective rocker arms.
• When wear is in excess of the usable limit,
replace the shaft.
(4) Inspection of the clearance between the rocker
arms and rocker arm shaft
• Measure the bore diameter of each rocker arm
and calculate the difference from the diameter of
the rocker arm shaft.
When the difference exceeds the usable limit,
replace the assembly of the rocker arm shaft and
rocker arms.
3URFACE FLATNESS BOTH FOR INTAKE
AND EXHAUST MANIFOLDS
MM
5SABLE LIMIT
&IG
3HAFT BENDING MM
5SABLE LIMIT
&IG
3TANDARD VALUE 5SABLE LIMIT
MM MM $IAMETER
&IG
&IG