Preparation Of Epoxy Zinc Chromate Primer; Preparation And Application Of Dupont Imron Urethane Enamel; Product Listing For Randolph Paint Finish; Preparation And Application Of Zinc Chromate Primer - Piper CHEROKEE WARRIOR PA-28-151 1995 Maintenance Manual

PIPER CHEROKEE WARRIOR SERVICE MANUAL
2-82.

PREPARATION OF EPOXY ZINC CHROMATE PRIMER:

a. MIXING RATIO: Two parts primer 825S with one part activator 826S. Thin with approximately
one part reducer 3602S, mix thoroughly, and allow to stand for one hour minimum.
b. DRY FILM THICKNESS: 0.0005 to 0.0007 inch dry film thickness.
c. DRY TO TOPCOAT: Urethane enamel may be applied after 30 minutes minimum at 75° ± 5°F.
2-83.

PREPARATION AND APPLICATION OF DUPONT IMRON URETHANE ENAMEL:

a. MIXING RATIO: Three parts enamel with one part activator 192S. Thin with approximately one
part reducer Y8485S.
For each gallon of the above mixture, add and mix in four
ounces of accelerator 189S, and two to four ounces per gallon
(as required to prevent craters, surface imperfections, etc.) of
additive 259S.
b. APPLICATION: Two wet coats of the enamel. The first coat shall be allowed to flash dry for ten
minutes minimum prior to application of the second coat. The enamel shall be forced dried at 100° ± 5°F for
90 minutes minimum after the second coat.
c. DRY FILM THICKNESS: Of the combined coatings shall be 0.0018 to 0.0022 inch.
2-84.

PRODUCT LISTING FOR RANDOLPH PAINT FINISH:

a. Prime Coat:
Use zinc chromate primer per MIL-P-7962.
b. Color Coat:
Randolph Paints B5420/D7784
Thinner B5408A
Solvent P6737
c. Suggested Solvents:
Safety Solvent per MIL-S-18718
Sherwin Williams Lacquer Thinner R7KC120
Glidden Thinner No. 207
2-85. PREPARATION AND APPLICATION OF ZINC CHROMATE PRIMER. This primer shall be used
only on aluminum previously primed with MIL-P-8585 zinc chromate or MIL-C-8514 wash primer. The use of
this primer over MIL-P-8585 is an exception and will result in a small reduction in gloss. This condition is
acceptable on aircraft with special corrosion proofing.
Blushing may be controlled under conditions of high humidity
by the replacing of up to 6% of the thinner with ethylene glycol
monobutyl ether per TT-E-776.
a. MIXING RATIO: Mix approximately two parts of the packaged primer with three parts of lacquer
thinner. Vary mix where needed to allow a thin wet coat application.
b. APPLICATION: A thin wet coat.
c. DRY FILM THICKNESS: Between 0.0003 and 0.0005 inches thick.
Added: May 27, 1977
NOTE
NOTE
1C18
Island Enterprises
HANDLING AND SERVICING