67-40 Swashplate
A. Removal
NOTE
Rigging check is not required if push-pull tube rod end center-
to-center dimension does not change.
1. Remove main rotor blades and hub per §§ 62-10 and 62-20.
2. Atop of C251 main rotor drive shaft, remove D226 brackets, D151 teeter stops, and
C150 droop stops by removing NAS6608 bolt.
3. Disconnect upper C204 arm from C203 yokes.
4. Disconnect and remove C203 yokes, A210 key, and chord arm weights.
5. Remove swashplate boot by cutting plastic ty-raps.
6. Disconnect three push-pull tubes and A205 fork assembly from lower (non-rotating)
swashplate.
7. Lift swashplate with attached fork and pitch links off slider tube and remove from
helicopter.
B. Installation
1. Install swashplate onto slider tube assembly. Connect lower scissors’ fork to left side
of middle of three lugs on lower, non-rotating swashplate. Connect aft push-pull tube
to right side of aft, single lug on lower swashplate. Standard torque bolts per § 20-32.
Install palnuts and standard torque per § 20-32.
2. Verify swashplate tilting friction per § 67-41; adjust as required.
3. Slide swashplate boot over main rotor drive shaft and set in place.
4. Install C203 yokes on C251 main rotor drive shaft upper flange using A210 key to
index yokes to shaft. Finger tighten clamping hardware.
NOTE
Round edge of A210 key to fit into drive shaft flange indexing slot.
5. Standard torque NAS6605 bolt thru yokes and A210 key first per § 20-32. Install
palnuts and standard torque per § 20-32.
6. Standard torque bolt thru yokes opposite A210 key per 20-32. A slight gap between
yokes opposite A210 key is normal.
7. Install previously removed chord arm weights and standard torque bolt per § 20-32.
Install palnut, standard torque per §20-32, and torque stripe per Figure 5-1.
APR 2017 Chapter 67 Flight Controls Page 67.9
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