EFFECTIVITY:
PIPER AIRCRAFT
PA-42-720 (Advanced Trainer)
MAINTENANCE MANUAL
A. CabinEntranceDoor (continued)
PAGE 2 52-10-00
Jan 10/90
1.Support Cable
2. Scuff Cover
6. Weather Seal
9. InnerSkin
Bulkhead
12.Outer Skin
6. Weather Seal View A -A
Cabin Entrance Door Figure 401
EFFECTIVITY:
040-999
PIPERAIRCRAFT
PA-42-720(AdvancedTrainer)
MAINTENANCEMANUAL
B. Cabin Entrance Door Step Mechanism
1. Steps Removal
With cabin entrance door opened and steps extended, removestepsas follows:
(a)
Removenuts, bolts, and washers fromboth sides of the steps connectingstepsupporttubes which link the three steps together.
(b)
Removehingepinssecuringstep half of hinge with door half of hinge; removesteps.
2. Steps Installation
(a)
Positionsteps to door. Install hinge pins.
(b)
Positionstep support tubesalong sides of steps. Be sure to place tube with door support cable guideon forward side of door. Be sure step stops, on step support tubes,point forward toward centerof entrance door.
NOTE: Check that door support cable is routed betweenroller and bracket on forward step support tube assembly.
(c)
Install bolts through stepsupport tubes, washersbetweentubes and step brackets and secure with locknuts.
C.
Handle (Inside) Removal (Figure 402)
1.
Removescrew pin from handle.
2.
Removehandle and teflon washer.
3.
Removescrewssecuringcover plate and removeplate.
4.
Removemachinescrewsandlocknutsto remove spindle from door.
5.
Reachinto opening made by removing coverplate. Remove boltand locknut securing outer handle and shaft to bellcrank.
D. Cabin Entrance Door Latch Mechanism Thelatching mechanism consistsof seven locking lugs and a series of push-pull rodsand bellcranks, all controlled from a centrally located handle.
1. LatchingMechanismRemoval (Figure 402)
(a) Upperand lower latchingmechanism: (1.) Remove interior trim panels from door. (2.) Remove cover plate over bellcrank. (3.) Remove boltconnectingverticalpushrodto bellcrank. (4.) Remove bolts connecting right or left push rod, or both if necessary, to removecomplete
assembly.
(5.) Removebellcrankorpushrod and lugs.
(b)Centerlatchingmechanism: (1.) Remove interiortrim panels fromdoor,if not previously removed. (2.) Remove inside handle and cover plate. (3.) Remove bolts, spacers, andlocknutsconnectingverticalpush rods whichextendto upper
and lower latchingmechanismbellcranks. (4.) Removebolts connecting rightor left push rod, or both if necessary, toremovecomplete
assembly. (5.) Removeboltand locknut, and remove bellcrank. (6.) Removeoutsidehandlefromoutside of door. (7.) Removepush rods extendingto sides of door and appropriate lockinglugs.
EFFECTIVITY:
040-999
52-10-00Jan
PIPER AIRCRAFT
PA-42-720 (Advanced Trainer)
MAINTENANCE MANUAL
D. Cabin Entrance Door Latch Mechanism (continued)
1.
LockingLug
2.
Push Pull Rod
3.
PushPull Rod
4.
Cover Plate
5.
Bellcrank(Upper)
6.
Vertical Push Rod
7.
Bellcrank (Center)
8.
Inside Latch Handle
9.
Vertical Push Rod
10.
Bellcrank (Lower)
11.
Cover Plate
12.
Knob (Auxiliary Lock)
13.
Cover Plate
14.
Rod
15.
Washer
16.
Cotter Pin
17.
O-Ring
18.
Lock Bushing
19.
Spring
20.
Plunger
-NOTE:
See 52-70-00,
Figure 1 for
Door Ajar Switch
Cabin Entrance Door Latch Mechanism
Figure402
EFFECTIVITY: 040-999
Jan 10/90
Jan 10/90 52-10-00
PIPERAIRCRAFT
PA-42-720(AdvancedTrainer)
MAINTENANCEMANUAL
D. CabinEntranceDoorLatchMechanism(continued)
2. LatchingMechanismInstallation(Figure402)
(a) Upperand lower latchingmechanism:
(1.) Installpushrods, and lockinglugsinto door. (2.) Install bellcranks;positionupper bellcrank withpush-pullrod attachment pointtoforward sideof door, andlower bellcrank withpush-pullrod attachment pointto aft side of door. (3.) Install upperverticalpushrod(curved end up) to upperbellcrank.Securewith right push
rodusing bolt, washer, and locknut. (4.) Connectleft push rod to bellcrank.Securewithbolt, washer, andlocknut. (5.) Install lowerverticalpush rod tolowerbellcrank.Secure with leftpushrodusingbolt,
washer,andlocknut.
(6.) Install cover platesand adjust lugs.
(b) Centerlatchingmechanism: 中國航空網 www.k6050.com 航空翻譯 www.aviation.cn 本文鏈接地址：夏延飛機維護手冊 Cheyenne IIIA PA-42-720 AMM 2(107)
