Figure 3-20. Tube section being installed (single space).

Figure 3-21. Tube Section being installed (double splice).

(8) Straighten bent fins at each end of repair

Double Splice Repair of Corrugated Fin Types

area. Careful alinement and spacing of fins with the use of

duck bill pliers will result in an appearance almost equal to

(1) Heat and spread fins at each end of the

a new radiator.

area to be repaired with needle nose pliers. Spread fins

(9) Clean, flux and solder fins to tube section in

only enough to cut tube ends.

usual manner. Use minimum amount of heat and small

(2) Cut the damaged tube section at both ends

amount of solder.

with tin snips. The cut must be an oblique angle to

increase the solder bonding area An angle of 45 is

d. Single Splice Repair of Continuous Fin Types

(1) Heat a small section of fins, grip with needle

recommended.

nose pliers and twist out fin sections. Remove evenly to

(3) Remove the cut section of tube.

provide a straight slot on each side of the repair area.

(4) Cut the new section from tube stock

Tear and remove only the number of fins that are required

approximately 1/2 inch longer than removed section. Cut

new section at a square 90angle. The tube stock may be

for the repair.

(2) Cut the damaged tube section at one end

one size smaller than the removed section for ease of

with tin snips. The cut must be at an oblique angle to

fitting.

increase solder bonding area. An angle of 45 is

(5) Open collapsed ends of tube with needle

recommended.

nose pliers.

(3) When tube is cut, heat and remove other

(6) Flare both ends of tube to be spliced so new

end of tube from header by heating. Clean and tin header

section will fit inside. Tin all ends of tubes that have been

area around tube hole.

cut.

(4) Cut a new section of tube approximately l/4

(7) Fit new tube section inside flared ends.

inch longer than removed section. Obtain the new section

Form flared ends around new section. Flux and solder

from tube stock of identical size. Open collapsed ends

spliced section. Be careful that solder does not flow inside

with needle nose pliers or suitable tool.

tube. Figure 3-21 illustrates new tube section being

installed.

3-16