Figure 3-12. Tank being replaced.

(8) Clean and tin the seam portion of header in

preparation for soldering to tank. Carefully inspect for

cracks and other defects.

(9) Clean and tin the tank on both sides of rim

portion in preparation for soldering to header. Inspect for

cracks, etc.

(10) Place core assembly in a vertical position with

header rim surface level. Fit tank to header and clamp in

position using header clamp. Apply heat and flow solder in

head lip channel until entire lip is completely soldered

Figure 3-12 shows a tank being replaced.

Figure 3-13. Bolt-on tank type radiator.

CAUTION

The smooth flange surface should not be bent or

scratched on the seal surface.

Figure 3-12. Tank being replaced.

(1) Code-mark all components to be removed as

(11) After testing replace all brackets and

directed in b above.

anchorages that were removed Use appropriate radiator

(2) Remove bolts and gasket seal. Clean flange

clamps and radiator side notchers. Soldering the brackets

surfaces by scraping with a blade. Finish cleaning with

will require cleaning, tinning and clamping before

muriatic acid until bright and clean.

soldering.

(3) Clean core in a hot cleaning vat.

c. Bolt-on Tanks. Many heavy-duty and industrial

(4) Test core after cleaning. A Uni-Tester (fig 3-14)

radiators use bolt-on tanks (fig 3-13). These tanks are

made for this purpose, may be clamped in place for air

attached in a manner similar to a flange joint.

testing. If Uni-Tester is not used, construct a temporary

"V" tank (e. below).

They use a gasket between the two adjoining flat surfaces.

The following procedure may be used for repair.

3-12