(b)
Installnew conicalseals
NOTE: Conicalsealsareneverto bereused.Ifa connectionisbrokenthesealsmustbe replaced.
NOTE: Applytorqueon backportionof nutnextto shoulderto minimizedistortionof thread.
CAUTION: ANGULAR MISALIGNMENT BETWEEN TUBE AND FITTING WILL OVER-STRAIN SLEEVE AND NUT DURING TORQUE -UP. APPLY TORQUE ONLY AFTER TUBE CENTER LINE IS SQUARELY MATEDTO THE FITTING CENTER LINE.
(c) Tightenfitting one(1) to oneandone half(1 1/2)hexflatsfrom positionof sharptorquerise (fingertight).
EFFECTIVITY:
Jan
10/9010/90
PIPER AIRCRAFT
PA-42-720 (Advanced Trainer)
MAINTENANCEMANUAL
B. StandardPractices-Airframe (continued)
37° FLARED FITTING
CONICALSEAL
TUBE
NUT
SLEEVE
ConicalSeals
Figure 1
C. Corrosion Inhibiting Compound
Thissection contains information necessary for the application of corrosion inhibiting compounds to the interior of the aircraft structure. Corrosion inhibiting compound is used to supplement the corrosion protection of primers, sealants, etc.
CAUTION: TO ENSURE PROPER APPLICATION, MAINTENANCEPERSONNEL MUST THOROUGHLY FAMILIARIZE THEMSELVESWITH THE INFORMATION AND PROCEDURES FOUND IN THE DINITROL A AVIATION TECHNICAL MANUAL AND THE DINITROL AVIATION TRAINING VIDEO.
1. ApplicationSafety
WARNING: CHARCOAL FILTER BREATHING MASKSSHOULD BE WORN WHEN SPRAYING IN ENCLOSED AREAS.
CAUTION: PROTECT ALL ELECTRICAL EQUIPMENT, COMPONENTSAND CONNECTORS FROM SPRAY.
CAUTION: PROTECT ALL TUBING AND OXYGEN LINE FITTINGS AND ENDS FROM SPRAY.
EFFECTIVITY:
040-999
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PIPER AIRCRAFT
PA-42-720 (Advanced Trainer)
MAINTENANCEMANUAL
C. CorrosionInhibiting Compound (continued)
1. ApplicationSafety(continued)
CAUTION: PROTECTPLASTICS,CABLES, CABLE PULLEYS,DUCTING,TAPEANDOTHER MISCELLANEOUSEQUIPMENT FROM DIRECT SPRAY.
CAUTION: PROTECT OPEN TYPE INSULATION FROM SPRAY OR INSTALL AFTER APPLICATION.
CAUTION: PROTECT ALL AREAS REQUIRING ADDITIONALFINISH, SEALING, BONDING OR OTHER OPERATIONS REQUIRING ADHESION TO SKIN, FROM SPRAY.
CAUTION: DO NOT REUSE OLD PLUGS AND OLD TAPE. REPLACE WITH NEW PLUGS AND NEW TAPE.
CAUTION: WHEN INSTALLING FUELBLADDERS, BE SURE THERE ARE NO SHARP EDGES THAT COULD PUNCTUREBLADDER.
2. Application Tips
(a)
Removeinterior as required to access spray areas.
(b)
Be sure surfaces to be coated are dry and free of dust, dirt, debris and excessive buildup of oil or grease.
(c)
Use special tool (Piper P/N 89123-02) to spray areas that cannot be reached with Dinitrol accessories.
(d)
Sounddamping tape, primer and sealants may be applied before spraying.
(e)
Apply compound before components such as radios, systems, rigging, lines, wiring, etc. have been installed.
(f)
Applycompound to joints, faying surfaces, fasteners and any other metal surfaces of the interior of the aircraft structure where corrosion could occur.
(g)
Apply compound as received from the vendor without thinning.
(h)
Apply compound to a thickness of 0.8 mils. Avoid puddling and thick or thin spots as much as possible.
(i)
The compound will dry tack free in 1 to 1 1/2 hours. Complete drying will require 6 to 8 hours. The compound will never set up hard like paint or primer.
(j)
Remove compound with naptha, chlorinated hydrocarbonsor alkaline degreasers.
CAUTION: DO NOT REUSE OLD PLUGS AND OLD TAPE. REPLACE WITH NEW PLUGS AND NEW TAPE.
(k)
Replace all plugs, patch plates, tape, and access covers.
NOTE: Figures 1 through 5 on the followings pages show particular spray access locations on the aircraft that may otherwise be difficult to find.
NOTE: For further informationor to obtain a copy of the Dinitrol Aviation Technical Manual or the Dinitrol Aviation Training Video, please contact DINOL International at one of the address listed in the vendor publications section, of the Introduction.
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