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FE290 ENGINE
Cylinder Block
Page 13-28 2000 FE290 Gasoline Vehicle Maintenance and Service Supplement
13
Connecting Rod Inspection
1. Clean and inspect the bearing surfaces of the connecting rod and cap. Replace parts if scored.
2. Using an inside micrometer or 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 0.7500 inch (19.050 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).
5. Using a telescoping gauge or an inside micrometer, measure the inside diameter of the large bore at
several points along its length (Figure 13-58, Page 13-29).
6. If the inside diameter exceeds 1.4003 inches (35.568 mm), replace the connecting rod.
Piston and Connecting Rod Installation
See Page 13-43.
CYLINDER BLOCK
Read DANGER and WARNING on page 13-1.
While the engine is disassembled, inspect the cylinder block for cracks, stripped bolt holes, broken fins, or
cylinder wall scoring. Repair or replace as necessary.
1. Use an inside micrometer or telescoping gauge, together with a micrometer, to measure the cylinder bore.
2. Make the first measurement parallel with the crankshaft and the second at right angles to the crank-
shaft at three different locations in the bore. The first measurement location is 0.4 inch (10 mm) from
the top of the cylinder. The second location is in the center or 2.4 inches (60 mm) from the top, and the
third location is 0.3 (8 mm) from the bottom of the cylinder or bottom of ring travel (See locations 1, 2,
and 3 in Figure 13-59, Page 13-30).
• THE CONNECTING ROD AND CAP MUST STAY TOGETHER AS A SET. DO NOT MIX WITH
PARTS FROM ANY OTHER ENGINE.
• IF THE CONNECTING ROD IS BENT OR TWISTED, IT MUST BE REPLACED.
Figure 13-57 Measure I.D. of Small Bore
Figure 13-58 Measure I.D. of Large Bore
NOTE
Measure
in 2 places
90
°
apart.
A
A
2
1
A
A
2
1
Measure each side
of oil groove
in 2 places
90
°
apart.