Cub-cadet Yanmar 3TNV72 User Manual download pdf (Page 149)

ENGINE

6-50 TNV IDI Service Manual

Cylinder Block

Figure 6-69

2. Measure the connecting rod twist

(Figure 6-70, (1)) and bend (Figure 6-70, (2))

using a connecting rod alignment tool

(Figure 6-71). Record the measurements. See

Connecting Rod on page 6-12 for

specifications.

Figure 6-70

Figure 6-71

3. Place the connecting rod bearing inserts into

the connecting rod and connecting rod cap.

Install the rod cap and tighten the bolts to the

specified torque.

4. Measure the inside diameter. Record the

measurements. See Crankshaft on page 6-8 for

specifications.

Inspection of Tappets

1. Inspect the tappet contact surfaces for

abnormal wear (Figure 6-72, (1)). Normal wear

will be even as shown in (Figure 6-72, (2)).

Slight surface defects can be corrected using

an oilstone.

Figure 6-72

2. Measure the outside diameter of the tappet

stem (Figure 6-73, (1)). Record the

measurements. See Tappet on page 6-12 for

the service limit.

Figure 6-73

3. Measure the tappet bores in the cylinder block.

Record the measurements. See Tappet on

page 6-12 for the service limit.

0001724A

(1)

(2)

0001896

(1)

(2)

0000242

0002194

(1) (2)

0002195

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