Actuator Rod (1135-105-1 & -2) - BOMBARDIER Chalenger 604 Supplemental Maintenance Manual

2.5 Actuator Rod (1135-105-1 & -2)
2.5.1 Thrust Lever
The actuator rod to be replaced must be disconnected from the thrust lever, located in the
pedestal. This connection is the same one ordinarily used on CL-604 with or without
Enhanced AutoPower. It requires removal of access panels of the pedestal in the cockpit.
Breaking and replacing the connection at this point, external to the Enhanced AutoPower
assembly, will require rerigging. See paragraph 2.5.5.
2.5.2 Tools
Needle nose piers
Retaining ring tool (see paragraph 4.2)
2.5.3 Removal
After disconnecting the actuator rod from the thrust lever, on the side to be replaced, the pivot
pin (1135-232, see paragraph 3.0) connecting the actuator rod to its clutch crank, must be
removed. See section 3.0. The rod is now free to be manipulated out, and removed.
NOTE: The extricated rod has a part number, which includes a dash number: 1135-105-1
(left) and 1135-105-2 (right). These are not interchangeable. (Left, –1, is on the pilot
side.)
2.5.4 Replacement
Replace the rods with the "cutouts" facing outboard.
Replacement involves the use of a .250-inch diameter rig pin. One of these is supplied with
each unit delivered by Safe Flight (1135-228). Any straight .250-inch diameter rod can be
used, if it is at least 9 inches long. The rig pin, when inserted through the support structure
holes and (slotted) inner bell crank arm holes, defines the flight idle position. The length of
the actuator rod may need to be adjusted, by use of the threaded connection to the upper
clevis, to put the thrust lever in its flight idle position, with the rig pin in place. This is the initial
stage of the rerigging required. See paragraph 2.5.5.
Thus, when replacing the actuator rod, by reversing the steps of paragraph 2.5.3, the position
of the thrust lever is established at flight idle, with the Enhanced AutoPower assembly
configured in its flight idle position. Replace an 1135-105-1 with a –1 and replace an 1135-
105-2 with a –2.
2.5.5 Rigging
Recheck rigging and make required adjustments. Note that a minimum of "cushion" should be
employed at full power and at flight idle. Excessive cushion will store a load in the clutches,
resulting in a heavy force requirement to move the throttles out of those positions.
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