78-31-03
ALL ú ú C01 Page 412 ú Mar 15/98
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
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CFM56 ENGINES
737-300/400/500/ /MAINTENANCE MANUAL ////////////////////////
(j) Fully retract the actuator [195A] and install the rig pin.
(k) Install the free end of the rod [65] into the clevis of the
actuator [195A].
(l) Install the lock tab [10] and one washer [20] on the bolt [15].
(m) Insert the bolt [15] through the actuator clevis from the
bushing [40] side, then install the bushing [35] and the
remaining washer [20].
(n) Install the nut [25] and tighten to 50-90 pound inches.
(o) Crimp the ears of the lock tab [10] around the actuator clevis
and make sure the ears of the lock tab do not interfere with
the rod [65].
(p) Rotate the bolt [15] to locate the remaining ear of the lock
tab [10] parallel to the flat and then crimp the ear over the
bolt head.
(q) Retighten the screws [180] to 27-33 pound inches and lockwire.
(r) Remove the bolt [105], washers [110], and bushing [120].
(s) Move the bellcrank assembly [125] away from the fitting [190].
(t) Install the leaf spring on fitting [190] with washers [175],
screws [170].
NOTE: Leaf spring [160] is used on left half actuators (part____
number 315A1846-1).
Leaf spring [165] is used on right half actuators (part
number 315A1846-2).
(u) Tighten screws [170] to 18-22 pound inches and install
lockwire.
(v) Make sure that the spring does not interfere with the housing
of the actuator.
(w) Remove the rig pin from the actuator.
(x) Extend the acutator to approximately the mid-stroke position.
(y) Move the bellcrank assembly [125] back onto the fitting [190].
(z) Install the bushing [120], bolt [105], washers [110] through
the fitting [190] from the underside.
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78-31-03
ALL ú ú C02 Page 413 ú Nov 12/99
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
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CFM56 ENGINES
737-300/400/500/ /MAINTENANCE MANUAL ////////////////////////
(aa) Check that the leaf spring engages the bellcrank and secure fasteners with collar [115].
(ab) Put the new number on the new left half or right half locking actuator.
(ac) Do the adjustment/test procedure for the actuator assembly (AMM 78-31-03/501).
S 864-074-C00
(2) If necessary, change a left half (LH) locking actuator into a right half (RH) locking actuator or a RH locking actuator into a LH locking actuator.
NOTE: The differences between a LH locking actuator and a RH
____ locking actuator are the leaf spring part numbers and the installed position of the fitting [190], the leaf spring, and the bellcrank assembly [125].
When you are finished with the change and buildup, the locking actuator part number will be changed to a new part number for either the left half (LH) or the right half (RH).
(a)
If not already done, remove the locking actuator
(AMM 78-31-03/401).
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