Yanmar 3TNV88F, Руководство по обслуживанию

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ENGINE
6-22
3TNV88F Service Manual
Cylinder Head
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Inspection of push rods
Push rod bend
Determine if the bend of the push rods are within
the specified limit.
1. Place the push rods on a flat inspection block or
layout bed.
2. Roll the push rods until a gap can be observed
between a portion of the push rod and the
surface of the block or layout bed.
3. Use a feeler gauge to measure the gap
(Figure 6-14) . See Push Rod on page 6-5 for
the service limit.
Figure 6-14
■
Inspection of rocker arm assembly
Rocker arm shaft hole diameter
1. Use a test indicator and micrometer to
determine if the inside diameter of all the rocker
arm support brackets and the rocker arms
(Figure 6-15) are within the specified limits.
See Rocker Arm and Shaft on page 6-5 for the
service limit.
2. Inspect the contact areas (Figure 6-15, (1)) for
excessive wear or damage .
Figure 6-15
Rocker arm shaft outside diameter
Use a micrometer to measure the rocker arm shaft
diameter. Measure at each rocker arm location in
two directions 90° apart
(Figure 6-16) . See Rocker
Arm and Shaft on page 6-5 for the service limit.
Figure 6-16
K0000204
K0001916
1
1
K0001952
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