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FE290 ENGINE
Crankshaft and Counterbalance
Page 13-38 2000 FE290 Gasoline Vehicle Maintenance and Service Supplement
13
Crankshaft Inspection, Continued:
4. Using a micrometer, measure the crankshaft link rod journals at several points (Figure 13-86, Page 13-39).
4.1. If the diameter of either journal is less than 1.8474 inches (46.924 mm), replace the crankshaft.
5. Check the crankshaft alignment.
5.1. Place the crankshaft in an alignment jig.
5.2. Turn the crankshaft (1) slowly and measure total indicated run-out at the location shown (2)
(Figure 13-87, Page 13-39).
5.3. If total run-out exceeds 0.002 inch (0.051 mm), replace the crankshaft.
Undersized Connecting Rod
The connecting rod journal can accept an undersized connecting rod with a 1.3779 inches (35.0 mm) inside
diameter. Grinding the crankshaft is required before using the undersized connecting rod.
1. Have a reliable repair shop grind the crankshaft journal (A) (Figure 13-88, Page 13-39).
2. The final finishing dimensions are as follows (Figure 13-88, Page 13-39).
- (A) 1.3775 - 1.3779 inches (34.989 - 35.00 mm)
- (B) 0.110 - 0.126 inch (2.80 - 3.20 mm) radius two places
- (C) 1.12 inches maximum (28.4 mm)
- (D) 1.1811 - 1.1831 inches (30.0 - 30.05 mm)
3. The connecting rod journal (A) must be concentric and cylindrical within 0.0002 inch (0.005 mm) at full
indicator reading (Figure 13-88, Page 13-39).
4. Finish should be very smooth. Use a super fine finishing stone.
Figure 13-86 Measure Crankshaft Link Rod Journal
Figure 13-87 Measure Total Indicated Run-Out
Figure 13-88 Crankshaft Finishing Dimensions
A
2
A
1
Measure each position in
2 places 90
°
apart.
1
2
C
B
A
D