747-400 AMM 飞机维护手册 STANDARD PRACTICES - AIRFRAME(98)

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____ should be checked by rotating the outer race relative to the inner race to establish the point where maximum play exists before attempting to make an accurate wear reading.
 C. Procedure - Bearing Breakaway Torque on Spherical Bearing Check
 S 226-015
 (1)  To do the breakaway preload torque checks, measure the torque necessary to turn one race with the other contamination race.
 NOTE: The bearing must not have lubricants or other contamination.
____ The breakaway torque must not be more than twice the permitted rotational preload torque (Table 601).
 NOTE: Measure the breakaway torque before you do the rotational
____ torque checks. Do the test at room temperature.
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 D.  Procedure - Bearing Rotational Torque on Spherical Bearing Check S 226-016
 (1)  To do the rotational preload torque checks, measure the torque necessary to turn one race with the other race held.
 NOTE: The bearing must not have lubricants or other contamination.
____
 NOTE: Measure the breakaway torque before you do the rotational

____ torque checks. For rotational torque tests, you must turn the bearing through two or three full turns immediately before you measure the torque. Do the tests at room temperature.
 NOTE: See Table 601 for permitted rotational preload torque
____
 values.

 NOTE: Some part numbers in Table 601 have more than one bearing
____ I.D.
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747-400 MAINTENANCE MANUAL
 ~............................................................................... | BEARING PERMITTED LIMITS FOR ROTATIONAL PRELOAD TORQUE - TABLE 601 | ................................................................................. | SELF-LUBRICATED SPHERICAL BEARINGS | ................................................................................. | Part Number | Bearing | Torque | Part Number | Bearing | Torque | | | ID | Lb-In. | | ID | Lb-In. | .................................................................................
 |  10-60545-100  |  0.2500  |  1 to 5  |  10-60545-130  |  0.7500  |  2 to 6 |
 |  10-60545-101  |  0.3125  |  1 to 5  |  10-60545-134  |  1.3765  |  20 to 60 |
 |  10-60545-102  |  0.3750  |  1 to 5  |  |  1.3745 |  |
 |  10-60545-103  |  0.4375  |  1 to 5  |  10-60545-135  |  0.7500  |  1 to 5 |
 |  10-60545-104  |  0.5000  |  1 to 5  |  10-60545-136  |  0.2500  |  1 to 8 |
 |  10-60545-105  |  0.5625  |  1 to 5  |  10-60545-137  |  1.2500  |  20 to 60 |
 |  10-60545-106  |  0.6250  |  1 to 5  |  10-60545-138  |  2.5003  |  40 to 60 |
 |  10-60545-107  |  0.7500  |  1 to 5  |  |  2.4994 |  |
 |  10-60545-108  |  0.8750  |  2 to 6  |  10-60545-143  |  3.5000  |  20 to 60 |
 |  10-60545-109  |  1.0000  |  2 to 6  |  10-60545-144  |  0.5000  |  1 to 5 |
 |  10-60545-110  |  0.1900  |  5 to 15  |  10-60545-145  |  1.5630  |  5 to 15 |
 |  10-60545-122  |  0.2500  |  3 to 9  |  10-60545-147  |  1.0000  |  2 to 6 |
 |  10-60545-123  |  0.7500  |  40 to 80  |  10-60545-148  |  0.875  |  1 to 8 |
 |  10-60545-124  |  1.2500  |  20 to 60  |  10-60545-149  |  0.625  |  0.5 to 5 |
　
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