CARBON
BLOCK
WIPE CLEAN
VIEW A
PowerPlant,Propeller, and Reversing Linkage
Figure 304

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B. Lubrication Charts (continued)
CHART 6
LUBRICATIONCHART (AIR INLET ICE PROTECTION AND OIL COOLER DOORS)

COMPONENT  LUBRICANT  FREQUENCY 
1. TRANSMISSION ASSEMBLY  DUKES 2196-74-1  500 HRS 
2. TRANSMISSION SCREW  MIL-G-23827  500 HRS 
3. SLEEVE AND BOLT ASSEMBLY  MIL-L-7870  100 HRS 
4. OIL COOLER EXHAUST DOOR HINGE  MIL-L-7870  100 HRS 
5. ICE DEFLECTOR DOOR HINGE  MIL-L-7870  100 HRS 
6. BYPASS DOOR HINGE  MIL-L-7870  100 HRS 
7. BEARING BLOCKS  MIL-G-23827  100 HRS 
8. TRANSMISSION SCREW  MIL-G-23827  500HRS 
9. TRANSMISSION ASSEMBLY  DUKES 2196-74-1  500 HRS 
10. TRANSMISSION MOUNTINGBUSHINGS  MIL-G-23827  500 HRS 
11. CLEVIS PIN  MIL-L-7870  100 HRS 
12. ICE DEFLECTOR DOOR ROD ENDS  MIL-L-7870  100 HRS 
13. CLEVIS PINS AND BOLT ASSEMBLIES  MIL-L-7870  100 HRS 

10

Air Inlet Ice Protection and Oil Cooler Doors 
Figure 305 
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PIPER AIRCRAFT
PA-42-720 (Advanced Trainer)
MAINTENANCE MANUAL

B. LubricationCharts(continued)
CHART 7
LUBRICATION CHART (CABIN DOOR, BAGGAGE DOOR, AND SEATS)

COMPONENT  LUBRICANT  FREQUENCY 
1. CABIN DOOR LATCH HINGES AND STEP MECHANISM  MIL-L-7870  100 HRS 
2. CARGO DOOR LATCH AND HINGES  MIL-L-7870  100 HRS 
3. NOSE CONE AND FORWARD BAGGAGEDOOR HINGES AND LATCHES  MIL-L-7870  100 HRS 
4. NACELLE LOCKER AND ENGINE COWL DOOR LATCH AND HINGES  MIL-L-7870  100 HRS 
5. SEAT TRACKS (ALL)  MIL-L-7870  100 HRS 

4. 5
2
4
4
3

CabinDoor, Baggage Door, and Seats Figure 306
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PIPER AIRCRAFT
PA-42-720 (Advanced Trainer)
MAINTENANCE MANUAL

A. UnscheduledServicing
1. EngineAccessoryDriveShafts-Lubrication
Lubricateaccessorydriveshaftsaccordingto Pratt& Whitney MaintenanceManual,P/N3021442, Chapter70, Standard Practices,General Torque Recommendations,page204.
Specificaccessoriesare:
(a)
Tachgenerators.

(b)
Hydraulicpumps,fuel pump.

Do notapplylubricantto the followingaccessories:
(a)
Fuelpumps(P&W).

(b)
Propgovernors(CSU).

(c)
Fuelcontrolunits.

Installoverspeedgovernorwith dry shaftor lubricate with cleanturbineengineoil.
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PIPERAIRCRAFT
PA-42-720 (Advanced Trainer)
MAINTENANCE MANUAL

CHAPTER 20
LIST OF EFFECTIVE PAGES

CHAPTER  CHAPTER 
SECTION  PAGE  DATE  SECTION  PAGE  DATE 
20-EFFECTIVITY  1  Jan 10/90 
20-CONTENTS  1  Jan 10/90 
20-00-00  1  Jan10/90 
20-00-00  2  Jan 10/90 
20-00-00  3  Jan 10/90 
20-00-00  4  Jan 10/90 
20-00-00  5  Jan 10/90 
20-00-00  6  Jan 10/90 
20-00-00  7  Jan 10/90 
20-00-00  8  Jan 10/90 

LIST OF PPAGE 1
EFFECTIVE

LIST OF EFFECTIVE 10/90
PAGESJan
PIPER AIRCRAFT
PA-42-720(AdvancedTrainer)

MAINTENANCEMANUAL

CHAPTER 20 -STANDARD PRACTICES / AIRFRAME
TABLE OF CONTENTS

SUBJECT CHAPTER PAGE
20-00-00 General 1 StandardPractices-Airframe 1 TorqueWrenches 1 FlarelessTubeAssemblies 1 CorrosionInhibitingCompound 2 ApplicationSafety 2 ApplicationTips 3 AccessLocations(Elevator) 4 AccessLocations(Wingand Fuel Cell Area) 5 AccessLocations(WingFlapand Aileron) 6 AccessLocations(EngineNacelle) 7 AccessLocations(Rudderand RudderTrimTab) 8
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StandardPractices-Airframe
A. General
Thischaptercontainsgeneralinformationpertainingto standardaircrafthardwareinstallationand removalpractices.
Theinformationincludedwillbeveryhelpfulif it isreferredto ona regularbasis.
　
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