Atec Tektronix-1502 - Manual (Page 64)

b. Procedure
1. Clean mating surfaces of seals with acetone.
2. Coat mating surfaces with No. 3144 sealant.
3. Install seals in subpanel.
6. Installation of rubber seals in two grooves located on the outer (see Figs. 5-5 and 5-6) edges of the
front and rear sides of the Subpanel
a. SEAL, RUBBER (2 ea.) MPL Item 2-55.
b. Procedure
1. Clean the rubber seals with acetone.
2. Apply a film of No. 3140 sealant to the inner surface of each groove. See Fig. 5-6. Do not apply the
sealant to the other surfaces of the grooves. No.3140 is more fluid than No. 3144 and can be applied with a
hypodermic type applicator.
3. Place a seal in each groove. Trim each seal to a length such that its ends butt together. Apply a film
of No. 3140 sealant to the Butt joint.
4. Before installing the instrument in a cabinet, lubricate the outer edges of the seals as shown in Fig. 5-
6.
7. Install the implosion shield and its retainer on the Subpanel (see Figs. 5-5 and 5-7)
a. SHIELD, IMPLOSION MPL Item 2-94.
b. RETAINER MPL Item 2-93.
c. Procedure
1. Clean the retainer and the implosion shield mounting area of the Subpanel with acetone.
2. Remove the protective paper from the implosion shield.
3. Position the shield on the Subpanel and form a continuous bead of No. 3144 sealant, approximately
.090 inch in diameter, around the shield/Subpanel interface.
4. Position the retainer over the bead of sealant and press into place.
Figure 5-6. Rubber Seals, edge sealing for subpanel. Figure 5-7. Detail of implosion shield sealing.
@ FEB 1980
5-8