Mooney M20TN, Service And Maintenance Manual

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MOONEY AVIATION COMPANY, INC.
M20TN SERVICE & MAINTENANCE MANUAL
Date
2006
Rev Date
Page 13
71--00--52 -- ENGINE SET--UP -- CONTROL RIG-
GING
Check all fuel lines, reference lines, gauge lines and
electrical connections for proper routing and security of
fittings.
1. CHECK AND ADJUST ENGINE CONTROL RIG-
GING
A. Operate each engine control through full range
of travel; check for smooth operation and contact of
stops at each end of travel.
B. Check each control at instrument panel for .03 to
.06 inch cushion, with control pushed full forward.
-- CAUTION --
Do not force Vernier controls by turning knobs.
NOTE:
Any Vernier control which tends to creep can be
tightened by loosening housing nut at back of
panel and tightening face nut on pilot’s side of
panel.
C. Adjust controls by adjusting rod end on forward
end of control. If additional adjustment is required, con-
trol arm may be repositioned to adjust throttle or mix-
ture. Additional adjustment may be obtained on propel-
ler governor by loosening six screws on governor head
and rotating governor head to obtain required adjust-
ment.
D. Tighten all screws and re--safety, if required.
2. PROPELLER RPM ADJUSTMENT
A. Verify that propeller governor will allow engine to
operate at 2500 +0/--25 RPM. Adjust high RPM stop
screw on governor head as required to obtain 2450 to
2500 RPM. Recheck control cable assembly cushion
as specified in Step 71--00--52.
B. Run engine until 170
°
to 180
°
oil temperature is
obtained. Slowly apply full throttle (propeller and mix-
ture full forward). RPM should not exceed 2500 RPM
for any long duration, short duration overspeed (2600
RPM transient) is acceptable until governor reacts and
controls to 2500 RPM maximum.
3. CLEAN UP
After all checks and adjustments are complete, remove
test gauges, reinstall cap an plug on throttle body and
manifold valve and conduct a leak check of all connec-
tions. Ensure all hoses are correctly reconnected. Re-
move footwell fitting adapter and replace with footwell
cover adapter.
71--00--60 -- FUEL INJECTION SYSTEM MAINTE-
NANCE
For specific injection system inspection and overhaul
instructions, consult TCM Maintenance and Overhaul
Manual M--18, Service Instructions and TCM Service
Information Directives for the TSIO--550--G( ) engine.
71--00--70 -- STARTER SYSTEM MAINTENANCE
Inspect and service starter per TCM Maintenance
Manuals, and Service Instructions.
-- CAUTION --
Do not operate starter in excess of 30 seconds;
allow cooling time before re--engaging.
71--00--80 -- ENGINE MIXTURE CONTROL RIG-
GING
1. Disconnect mixture control from mixture control
arm on fuel pump.
A. Remove cotter key.
B. Remove nut, bolt and washers from clevis and
mixture control arm.
C. Position fuel pump mixture control arm approxi-
mately center of travel arc.
D. Push Vernier control button IN and position Mix-
ture Control approximately mid--way in its travel.
2. Reverse disconnect procedure to reconnect Mix-
ture Control to mixture control arm on fuel pump.
A. Check for full travel and required cushion.
B. If additional cushion is necessary loosen locknut
on control rod end and adjust control arm rod as re-
quired to obtain cushion.
C. Check security of bolt, nut, etc.
71--00--90 -- STARTER TROUBLE SHOOTING
See Section 24--39--04 for procedure. TCM Overhaul
Manual and Operators Manual should be consulted.
71--10--00 -- COWLING REMOVAL
71--10--01 -- TOP COWLING
1. Remove screws from top cowling (Figure 71--4).
2. Unlatch cam locks (1/4 turn fasteners) along each
side.
3. Unlatch cam locks on aft edge of top cowling, just
ahead of windshield.
4. Carefully lift top cowling OFF.
71--10--02 -- BOTTOM COWLING
1. Unlatch cam locks located on bottom of cowling.
2. Unlatch cam locks on aft sides of bottom cowling,
while supporting cowl.
3. Carefully lower cowling clear of spinner and re-
move from aircraft.
71--00--52
AUGUST 2010