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Page Title: FIGURE 4-65. Measuring Main Journal.
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TM 55-1905-223-24-4
e.
Determine main bearing clearance as shown in FIGURE 4-65.
Measure the main journal diameters and determine main bearing clearance.
Diameter:
Minimum - 3.2662 inch
(82.962)
-Maximum -
3.2682'inch
(83.013)
Out-of-Roundness: 0.002 inch (0.050mm)
Taper:
0.0005 inch (0.013mm)
FIGURE 4-65. Measuring Main Journal.
Bearing Clearance = Main Bore Diameter with bearing installed - Crank Main journal diameter.
Bearing Clearance Maximum: 0.00475 inch (0.119mm)
REPAIR
a. Remove bearing sleeves (2, and 5, FIGURE 4-69) and straight pin (7).
b. Use a heavy duty puller to remove the spur gear (1) as shown in FICURE 4-67.
FIGURE 4-66. Using Puller.
4-50

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