Constant Speed Unit (Csu) Removal - Thrush Aircraft S2RHG-T65 TURBO THRUSH Maintenance Manual

THRUSH AIRCRAFT, INC – MODEL S2RHG-T65 TURBO THRUSH
E. Using (Hartzell P/N AST-2877) special torquing adapter and a standard torque
wrench, torque all eight bolts according to instructions as outlined in the latest
edition of Hartzell Propeller, Inc. Owner's Manual & Log Book No. 139.
F. Safety all mounting bolts in an airworthy manner with .032-inch minimum
diameter stainless steel wire.
G. Remove the feedback ring puller and connect the propeller reversing lever to the
propeller control linkage.
With the carbon block assembly held against one side of the
beta feed back ring, check the side clearance (Refer to Figure
4-6). Clearances can be established by dressing the block(s)
side(s) as required.
H. Check the propeller reversing linkage on the front end of the engine for proper
rigging.
I. Reinstall the spinner dome and engine cowling.
J. Perform the necessary engine run-up checks.
Thrush Aircraft Inc. recommends that the propeller be
dynamically balanced to the engine whenever a new propeller
or an overhauled propeller is installed, or any time there is a
question of the propeller's balance. Following the instruction
of the propeller balancing equipment (Chadwick Helmuth
Vibrex or equivalent equipment), set the amplitude of vibration
given in IPS (inches per second) on the balancer's meter to a
level of .2 or less at 1,500 rpm Np by adding weights to the
light blade(s) or spinner bulkhead in accordance with Hartzell
Propeller Owners manual P/N 139 chapter 6.
Do not add more than four (4) balance weights (P/N A-1305)
in any one stack. A maximum total of eight (8) weights are
allowed on any one clamp half.
A. Remove the forward engine cowling.
Effective: 05/05/04
AIRCRAFT MAINTENANCE MANUAL
** CAUTION **
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CONSTANT SPEED UNIT (CSU) REMOVAL

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