Specifications

RotorWay International
Exec 162F Maintenance Manual
50
Rev. 2 6/04
8. If this bolt requires replacement before the R.C.O. time of the aligner block assembly, follow these procedures:
A. Remove the aligner block assembly from the blades.
B. Clamp the aligner block in a vise using wood shims to prevent damage to the block.
C. Use a small die grinder or a high speed sanding disc to grind the tip of the all thread bolt completely off,
about 1/4" from the tip.
D. Dressing up the threads with a good file or sand paper, back the all thread bolt completely out of the aligner block.
Some friction will be felt, however, if the pressure is too great, damage to the aluminum block and threads will
occur.
E. Clean the threaded hole and pass a tap through the hole to clean up the threads. (Be sure to use a fair amount of
thread cutting oil.) Blow out the hole with air.
F. Install the new all thread bolts (part no. E00-2417) with a light film of all purpose grease. After the final adjustment
has been made, torque to 7-9 ft. lbs.
9. Aligner block bolts (5/16 x 3 1/4 part no. E00-2523) should be loosened and re-torqued only 3 or 4 times before
replacement. Torque requirement on these bolts is 20-22 ft. lbs.
10. See the Construction Manual for replacement of the rotor system and shaft. CAUTION: Under NO condition attempt
to change, alter, modify or fabricate a main rotor shaft for this helicopter.
11. Part no. E49-5140 requires 3-4 shots of grease every 25 hours. Refer to Service Note 19-2.
12. See pages 60-61 for complete instructions on the slider ball adjustment collar (part no. E49-3230). This procedure
may have to be done occasionally if the helicopter is exposed to severe or radical temperature changes.
13. Place a small amount of grease on slider ball clamp (part no. E49-1530) and on the lower ears of the collective slider
ball (part no. E49-3210). Remove the set screw on the slider ball and add 2 shots of grease, using a grease gun and
the main drive pulley grease tool (part no. E38-6700). Replace the set screw and tighten it securely.
Remove the plastic wire ties on the boot above the rotating swash plate and move the boot aside. Grease the upper
end of the mainshaft. Move the collective up and down several times to insure that the grease coats all related
surfaces. Return the boot to its original position and secure it with wire ties.
14. See instructions on page 61 for replacement of the nylon scissor bushings (part no. E49-4810). These should be
replaced on condition when the lateral play exceeds 1/8" total travel and cannot be taken up by tightening the bolts
(part no. E00-2516 and E00-2427). CAUTION: Do not exceed two flats past the position you can turn the nut with your
fingers.
15. Check for cracks at the base of the 90 degree bends on the collective scissor mount (part no. E49-1380).
16. This bearing (part no. E49-1220) should be checked for side play at every 100 hour interval. With a dial indicator on a
magnetic base, measure the amount of side play by first mounting the magnetic base to the steel hood bracket and
centering the indicator on the upper steel race of the main bearing. Using a spring scale, pull 20 pounds toward the
passenger side of the helicopter and mark the dial indicator reading. Using the same method, pull 20 pounds toward
the pilot side and mark the reading. Total the two readings. The maximum amount of travel allowed is .010 of an inch.
If your measurement is greater than .010, replace the main thrust bearing. This bearing is an On Condition item and
should be monitored on pre and post flight inspection for condition and temperature.
17. WARNING: Under
NO condition should the main bearing flange (part no. E49-1230) be heated up in an oven or with
an oxygen/acetylene torch.