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TM 10-4320-342-24
3-26. ENGINE MOTION TRANSDUCER REPLACEMENT.
b.
INSTALLATION. Refer to Figure 3-47.
(1)
Use formula A B + C = D plus or minus 0.002 to determine thickness of shim stack (1).
(a)
Using micrometer, measure motion transducer from tip of face to mount to determine dimension A. Record
measurement.
(b)
Using micrometer, measure from gearbox surface to crown of gear tooth of accessory drive gear to
determine dimension B Subtract dimension B from dimension A.
(c)
Add dimension C. Dimension C is a constant. C = 0.009.
(d)
Dimension D plus or minus 0.002 is the required thickness of shim stack (1).
(e)
Example of formula: 1.705 1.676 + 0.009 = 0.020 (f) Select shim.
NOTE
One or more shims may be used to obtain dimension D above. Shim is made up of
laminated layers and each layer is 0.002 inches.
(1)
Select appropriate number of shim to obtain dimension D above.
NOTE
Shim is made up of laminated layers and each layer is 0.002 inch.
(2)
If necessary, peel appropriate number of laminated layers from shim stack to achieve dimension
D above.
(2)
Install shim stack (1) on motion transducer (2).
(3)
Lubricate performed packing (3) with lubricating oil and install on engine motion transducer (2).
(4)
Install engine motion transducer (2) in gear box assembly (4).
(5)
Apply antiseize compound to bolts (5) and secure engine motion transducer (2) with bolts (5) and flat washer (6).
Torque bolts to 33 to 37 in-lbs.
(6)
Connect electrical connector (7) to engine motion transducer (2).
(7)
Lock wire electrical connector (7).
3-101
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