Adjustment Of Cabin Door; Cabin Entrance Door Latch Assembly - Piper Navajo Chieftain PA-31-350 Service Manual

NAVAJO CHIEFTAIN SERVICE MANUAL
4-66. INSTALLATION OF CABIN ENTRANCE DOOR (LOWER).
a.
Position door and align hinges, then insert hinge pins.
b.
Secure hinge pins with locking roll pins.
c.
Secure the step extender cable bracket to the lower door frame with a screw.
d.
Replace rubber cover and scuff plate between cabin floor and door.
e.
Connect the support strap hook to the upper left door frame by fastening the hook.
4-67. ADJUSTMENT OF CABIN DOOR.
a.
Use the least amount of shims under one lower door hinge only to obtain the proper fit between
the door, door frame and upper door.
b.
Trim the outer skin of the door to fit the upper and lower doors together and around the door
and fuselage.
4-68. CABIN ENTRANCE DOOR LATCH ASSEMBLY.
4-69. REMOVAL OF DOOR LATCH ASSEMBLY. (Refer to Figure 4-12.)
a.
Remove the door trim panel assemblies and the protector panel from behind the steps.
b.
Remove the safety latch mechanism from the door assembly by removing the latch spring (6),
attached between latch stop bracket (1), and door assembly by removing the bolt washer and eccentric
bushing (4).
c.
The safety latch actuator rod (7) can be removed from the safety latch stop bracket by removing
the cotter pin (2) and washer (3).
d.
Remove one roll pin (20) from the tube assembly and bushing, located to the rear of the steps.
e.
Remove two bolts (22) and shim washers (21) holding the inner handle (23) to the actuator
assembly. Note the amount and thickness of shim washers for reference when reinstalling handle.
f.
Remove the two door latch covers and the latch springs (13). Also remove the spring (17)
between the door assembly and hook (19) on the tube assembly. Then remove hook.
g.
Remove four bolts. washers and locknuts holding the latch mechanisms in place (two on each
side).
h.
The outer handle (9) can be removed by disconnecting the spring (15) between both halves of the
actuator assembly (16) and removing the cotter pin and pin (14). The handle and half of the actuator can
now be removed and further disassembled by removing two screws, shim washers and plate from actuator.
Note the amount and thickness of the shim washers (10) removed.
i.
Each latch mechanism can be removed by pulling it out of its own side of door assembly.
j.
The key lock assembly is removed by removing the retainer nut, washer and weather seal.
4-70. INSTALLATION OF DOOR LATCH ASSEMBLY. (Refer to Figure 4-12.)
a.
Install key lock assembly into hole in door and secure with weather seal, washer and retainer nut.
b.
The latch mechanisms should be installed next, being careful to place each half into its proper
place. The latch mechanism with the lock assembly going in the right side of door and aligning the tube
assemblies and bushing.
c.
Secure latch mechanisms with the four bolts, washers and locknuts, two for each side of door.
d.
Assemble outer handle with plate and shim washers (10) and secure to the actuator with two
screws. (Use shims to align the handle flush with outer door surface.) Place handle assembly into door and
connect to the other half of actuator assembly with pin and cotter pin (14). Connect the spring (15)
between both halves of actuator assembly.
e.
Install hook on tube assembly and connect spring (17) between hook and door assembly. Also
connect springs on both ends of latch assemblies and lubricate lightly. The door latch mechanism covers can
now be installed with five screws for each side.
f.
Install inner handle with screws and shim washers (21). Use only enough shims to keep the
handle from rubbing against the trim panel.
Revised: 10/5/83
STRUCTURES
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