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MAINTENANCE MANUAL

 ~.............................................................................. | TABLE II | ................................................................................ | CALCULATE THE THICKNESS OF A SHIM FOR THE | | HYDRAULIC PUMP END OF EACH HYDRAULIC TUBE | ................................................................................ | | CASE DRAIN TUBE | OUTLET TUBE | INLET TUBE | ................................................................................
 |  |  |  |  |
 |  DIMENSION C  |  ________  |  ________  |  ________  |
 |  |  |  |  |

 ................................................................................ | | | | | | DIMENSION B | ________ | ________ | ________ | | | | | | ................................................................................ | SUBTRACT DIMENSION B FROM | | | | | DIMENSION C TO GET THE SHIM | | | | | THICKNESS (|0.003) WHICH IS | | | | | NECESSARY | ________ | ________ | ________ | | | | | | ................................................................................ | WRITE THE THICKNESS OF THE | | | | | SHIM WHICH YOU USE | ________ | ________ | ________ | | | | | | 2...............................…..................…..............…............1
 (c)  Loosen the tube nut (27) on each hydraulic tube (24, 25, 26).
 NOTE: Do not remove the tube nuts (27) from the hydraulic pump
____ housing (17).
 (d)  Do the steps that follow to measure dimensions C and D on each hydraulic tube (24, 25, 26). 1) Put the hydraulic pump (17) in its position on the RAT
 strut housing (16) and engage the hydraulic tubes (24, 25, 26) with the RAT strut housing (16). 2) Make sure the hydraulic pump (17) is flat against the RAT strut housing (16). 3) Make sure all the tube nuts (27) on all the hydraulic tubes (24, 25, 26) are loose. 4) Install the four bolts (32) to hold the hydraulic pump (17) on the RAT strut housing (16).
 5)  Tighten the bolts (32) by hand until they touch the self-locking property of the threads in the RAT strut housing (16).
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 29-21-01
 ALL  ú ú 05 Page 413 ú Jun 20/97
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A 
757 
MAINTENANCE MANUAL
 6) Tighten the tube nuts (27), on the two ends of each hydraulic tube (24, 25, 26), by hand until they lightly touch the tube end flanges.
 NOTE: The hydraulic pump (17) must remain flat against the____ RAT strut housing (16). Do not tighten the tube nuts (27) too much. This will cause the hydraulic pump (17) and the RAT strut housing (16) to move apart. If this occurs, the calculated thickness for the shims (29) will not be correct.
 7) Measure the clearance, on each hydraulic tube (24, 25, 26), between the surface of the hydraulic pump housing (17) and the inner face of the tube nut (27). 8) For each hydraulic tube (24, 25, 26), write this clearance as dimension C in the Table II.
 9) Measure the clearance, on each hydraulic tube (24, 25, 26), between the surface of the RAT strut housing (16) and the inner face of the tube nut (27). 10) For each hydraulic tube (24, 25, 26), write this clearance as dimension D in Table I.
 (e)  For each hydraulic tube (24, 25, 26), subtract dimension B from dimension C to calculate the shim thicknes for the end of the
　
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