(a)
Remove the nut (26) and washer (25).
(b)
Remove the bolts (32 and 34).
(c)
Move the summing lever (30) away from the summing lever support (17).
NOTE: Do not change the length of the control rods between the
____ summing lever and the control module or the ratio changer.
(d)
Remove the summing lever support (17).
(e)
Remove the bolt assembly (27).
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(f)
Use the fishpole hoist and the hoist frame equipment to hold the lower actuator (6).
(g)
Remove the four bolts (9) and washers (10) that connect the lower actuator to the pillow block (3) and trunnion (2).
(h)
Retract the piston in the actuator (4).
NOTE: Use the bucket to catch the hydraulic fluid.
____
(i)
Install the caps on the hydraulic ports.
(j)
Remove the lower actuator (6) through the opening in the right side of the vertical stabilizer.
S 494-072
(4)
If you will not install the lower actuator immediately, do these steps to install the rudder actuator lock (referred to as the lock):
(a)
Put the lock in the location of the actuator that you removed.
(b)
Attach the lock to the pillow block (3) with its four bolts.
(c)
Adjust the length of the lock until you can connect it to the rudder with the pin.
(d)
Install the three lockpins in the lock.
(e)
Remove the rudder clamp from between the upper and lower rudders.
TASK 27-21-16-404-042
6. Lower Rudder Lower Actuator Installation (Fig. 401)________________________________________
A. Special Tools and Equipment
(1)
ST2580-267, Spanner Wrench Set
(2)
3ME65B81000-1, Rudder Clamp
(3)
G27008-19, Rudder Actuator Lock
(4)
G27016-39, Hoist frame Equipment - Upper and Lower Rudder PCU
(5)
Fishpole Hoist - P/N PF51-009--1 or Equivalent
PF Industries
Hoist Minilift
Didsbury Engineering
B.
Consumable Materials
(1)
A00181, Adhesive - BMS 5-92
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MAINTENANCE MANUAL
(2)
A00247, Sealant - BMS 5-95
(3)
D00054, Lubricant - Skydrol Assembly Lube MCS352
(4)
D00153, Fluid, Hydraulic Fire Resistant - BMS 3-11
C.
Parts ~.............................................................................. | AMM | | AIPC | ................. ...........................| | FIG | ITEM | NOMENCLATURE | SUBJECT | FIG | ITEM | ...............................................................................| | 401 | 9 | Bolt | 27-21-16 | 02 | 260 | | | 10 | Washer | | | 265 | | | 17 | Support Assembly | | | 220 | | | 18 | Cap Screws | | | 100 | | | 19 | Washer | | | 105 | | | 20 | Cap | | | 110 | | | 21 | Housing Assy | | | 115 | | | 23 | Bushing | | | 130 | | | 25 | Washer | | | 140 | | | 26 | Nut | | | 145 | | | 27 | Bolt Assy | | | 135 | | | 28 | Washer | | | 210 | | | 29 | Washer | | | 205 | | | 31 | Washer | | | 90 | | | 32 | Bolt | | | 85 | | | 33 | Washer | | | 200 | | | 34 | Bolt | | | 195 | | | | | | | | 2......…........…...................................…...........….....…........1
D.
References
(1)
AMM 27-21-16/501, Lower Rudder Power Control Actuator
E.
Access
(1)
Location Zone
324 Vertical Fin, Rear Spar to Trailing Edge
325 Lower Rudder
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