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If not already
done, remove
and apply L242
Blue threadlock
x 4 and tighten
in place.
Step 44 Mast Stopper & Upper Thrust Bearing - Gas SE
If not already done, remove and apply L242 Blue
threadlock to the upper main shaft bearing block
screws and the forwardmost screw on the lower bear-
ing block. Tighten in place.
The Gas SE includes the triple upper bearing block.
Slide the flat side of the thrust bearing spacer against
the bearing, followed by the larger ID race, apply
grease to the ball race and and finally the smaller ID
race. Start the M2.6x8 socket cap screw into the mast
stopper. Slide the mast stopper onto the main shaft,
ensure the raised lip is towards the bearing. Pull up
on the main shaft to remove any vertical play, press
the mast stopper down and tighten in place using
L242 Blue threadlock.
Step 45 Starting Shaft and Hex Coupler
The gas kits include the regular starting shaft and hex coupler as in all the Predator kits to align the clutch to the clutchbell.
Clean both the starting shaft and the inside race of the bearing inside the clutchbell and the inside race of the top starting
shaft bearing. Apply a small amount of L262 Red threadlock positioned just above where the bottom clutchbell bearing
will sit on the starting shaft. Slide the starting shaft up through the bearing blocks. Apply a small amount of L242 Blue
threadlock to the top of the starting shaft and slide the hex coupler in place
aligning the flat spot with one of the holes. Apply L242 Blue threadlock
to the the two M4x4 set screws and tighten in place.
The hex starting system has been successfully used with
the Z231H engine but significant wear on the hex coupler is
common. Regular replacement of the hex coupler is normal
and is not covered by warranty. The pull start should be
used for the first start of the day. Afterwards using a heavy
duty electric starter is possible.
The hex starting is not recommended for the
Z260H engine as damage can occur to your start-
ing equipment and helicopter components.
#HW6053 Main Shaft
#HW6054 Mast Stop-
per & M2.6x8 Socket
Cap Screw
#HW6045B Thrust Bearing Spacer
#HW6054 Mast Stop-
per & M2.6x8 Socket
Cap Screw
Gas SE only
#HW6002 Hex
Coupler & M4x4 Set
Screws x 2
#HW6005 Start-
ing Shaft
Step 43 Mast Stopper
Start one M2.6x8 socket cap screw into
the mast stopper. Slide the mast stopper
onto the main shaft, ensure the raised
lip is towards the bearing. Pull up on the
main shaft to remove any vertical play,
press the mast stopper down and tighten
in place using L242 Blue threadlock.
thick
race
(upper)
smaller ID
#CNBB1018T Main Shaft
Thrust Bearing
thin race
(lower)
larger ID
19
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