FE350 ENGINE
Piston and Connecting Rod
2001 Pioneer 900 Gasoline Vehicle Maintenance and Service Manual Page 13-29
13
Piston Pin Inspection
1. Using a micrometer, measure the outside diameter of the piston pin at several points along its length
2. If the pin diameter is smaller than 0.7864 inch (19.975 mm), replace the piston pin.
3. Using an inside micrometer or telescoping gauge, measure the inside diameter of the piston pin hole in
the piston at several points (Figure 13-56, Page 13-29).
4. If the inside diameter exceeds 0.7887 inch (20.033 mm), replace the piston.
Connecting Rod Inspection
1. Clean and inspect the bearing surfaces of the connecting rod and cap. Replace parts if scored.
2. Using a telescoping gauge, measure the inside diameter of the connecting rod small bore at several
points along its length (Figure 13-57, Page 13-29).
3. If the inside diameter exceeds 0.7887 inch (20.033 mm), replace the connecting rod.
4. Remount the connecting rod cap to the connecting rod at the large bore end, aligning the pilot groove
on the rod. Screw in the connecting rod bolts and tighten them to 16.5 ft-lb (23 N·m).
Figure 13-55 Measure Piston Pin O.D.
Figure 13-56 Measure Piston Pin Hole I.D.
Figure 13-57 Measure Connecting Rod
Small Bore I.D.
Figure 13-58 Measure Connecting Rod
Large Bore I.D.
A
2
A
1
Measure each position
in 2 places 90
°
apart.
A
B
C
D
D
C
B
A
2
1
2
1
2
1
2
1
A
A
2
1
Measure each
position
in 2 places
90
°
apart.
A
A
2
1
Measure each
position in
2 places
90
°
apart.
A
A
2
1
Measure each
position in
2 places
90
°
apart.
