(d)
Forward Rudder Trim Cable Drum
1) With rigging pin R-5 installed (system should be centered and rigging pin should fit freely), forward rudder trim cable drum shall be in neutral per detail A, figure
503. If not, cables may be adjusted per paragraph 1.C.(5).
(e)
Rudder Trim Control Cables RTA and RTB
1) With rigging pin R-5 installed (system should be centered and rigging pin should fit freely), tension in cables RTA and RTB shall be within limits of value for ambient temperature given in table 2, figure 501. If not, tension may be adjusted per paragraph 1.C.(6).
(f)
Rudder Control Cables RA and RB
1) With rigging pins R-3, R-4, and R-5 installed (system should be centered and rigging pin should fit freely), tension in cables RA and RB shall be within limits of value for ambient temperature given in table 1, figure 501. If not, tension may be adjusted per paragraph 1.C.(7).
(g)
Rudder Power Control Unit
1) With rigging pin R-5 installed and rudder hydraulic system pressurized, rudder trailing edge shall fall within rudder index tab (Fig. 505). If either side of trailing edge falls outside width of index tab, power control unit may be adjusted per par. 1.C.(8).
(h)
Standby Rudder Actuator
1) With rigging pin R-5 installed, and the Standby hydraulic systems pressurized, push the rudder by hand to the left and right side until it stop. If the dimension between left and right is more than 0.20 inch, the actuator may be adjusted per paragraph 1.C.(9).
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B. Equipment and Materials
(1)
Rigging Pins Kit - F70207-3, -52, -61, or -84:
(2)
Cable Tensiometer - 0 to 300 pounds range for 1/8-inch diameter cable
(3)
Digital Voltmeter
(4)
Grease - BMS 3-24 (AMM 20-30-21)
REF NO. F70207 -( ) DIAMETER (INCHES) LENGTH (INCHES) FUNCTION
R-1 R-2 R-3 R-4 R-5 E-4 -14 -14 -11 -11 -11 -11 0.309-0.311 0.309-0.311 0.309-0.311 0.309-0.311 0.309-0.311 0.309-0.311 12.7 ±0.25 12.7 ±0.25 6.7 ±0.25 6.7 ±0.25 6.7 ±0.25 6.7 ±0.25 CAPTAIN'S RUDDER PEDAL ARM F/O'S RUDDER PEDAL ARM CAPTAIN'S FWD QUADRANT F/O'S FWD QUADRANT FEEL AND CENTERING MECHANISM ELEVATOR AND RUDDER FEEL COMPUTER
C. Adjust Rudder and Rudder Trim Control System
(1) Remove rudder hydraulic systems A, B, and standby power (AMM 27-21-0/201).
WARNING: HYDRAULIC SYSTEMS MUST BE DEPRESSURIZED TO PREVENT INJURY TO PERSONNEL WORKING ON VERTICAL FIN AND RUDDER.
NOTE: After completing adjustment, restore airplane to normal hydraulic configuration (AMM 27-21-0/201).
If rudder power control unit or standby power control unit only are to be adjusted, do not remove hydraulic power.
(2) Adjust rudder forward quadrants.
(a)
Check that rudder hydraulic systems A, B, and standby power are removed (step (1)).
(b)
Position jackshaft yoke to midtravel by operating rudder pedal adjustment crank (Fig. 503).
NOTE: Midpoint of yoke travel is determined by counting equal turns of shaft from full forward and full aft adjustment.
(c)
Open lower nose compartment door 1103, and remove nose wheel well forward overhead access panels (Ref Chapter 12, Access Doors and Panels).
27-21-1 May 01/03 Page 504
BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.
(d) Insert rigging pins R-3 and R-4 in forward rigging pin holes in forward quadrants (Fig. 502). If rigging pins do not fit, adjust busrod as follows: 1) Loosen RA and RB cables using turnbuckles located in stabilizer jackscrew
compartment (Fig. 501).
CAUTION: CABLE TENSION MUST BE RELIEVED BEFORE ADJUSTING BUSROD. RELIEVE TENSION UNIFORMLY IN BOTH CABLES.
2) Remove busrod from jackshaft yoke (Fig. 502).
3) Install rigging pins R-3 and R-4 in forward rigging pin holes in forward quadrants.
4) Adjust length of busrod so that rod end attaching bolts fit freely through jackshaft yoke. Install washers, spacers, nuts, and cotter pins.
5) Check adjustment of pushrod to nose wheel steering (Ref Chapter 32, Landing Gear).
(e)
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