2001/10/01 Caterpillar

Commercial Folded Core Radiators Can Be Converted to Multiple Row Module Radiators {1353}

Usage:

Engine: 3508 (S/N: 1ZF1-UP; 5XM1-UP; 3LS1-UP; 95Y1-UP; 23Z1-UP; 68Z1-UP; 70Z1-UP) 3508B (S/N: 4GM1-UP; 6PN1-UP; 2HW1-UP) 3512 (S/N: 3YF1-UP; 6PM1-UP; 3MS1-UP; 49Y1-UP; 24Z1-UP; 65Z1-UP; 67Z1-UP) 3512B (S/N: 8RM1-UP; 6WN1-UP; 4AW1-UP) 3516 (S/N: 4XF1-UP; 5SJ1-UP; 3NS1-UP; 25Z1-UP; 27Z1-UP; 71Z1-UP; 73Z1-UP) 3516B (S/N: 6HN1-UP; 7RN1-UP; 1NW1-UP)

Engine News SEBD9302, October 2001, "Commercial Folded Core Radiator Can Be Converted To Multiple Row Module Radiators". Disregard this article. This article has been replaced by the following article.

Excessive amounts of loose dust and debris can result in plugging problems on the side of a folded core radiator that is exposed to the air flow. Radiator core assemblies with multiple rows are available to convert many commercial folded core radiators. Some radiators can be upgraded to a higher ambient performance by using cores that have multiple rows of tubes.

The family of commercial folded core radiators is composed of seven radiators. These radiators are often identified by the diameter of the fan and by the number of folded core assemblies. For example, "40/9" designates a radiator with a 40 inch fan and with 9 folded core assemblies.

Table 1 identifies the commercial radiators by the size and by the part number. The Table also identifies the new components that are required to convert the folded core radiators to multiple row module radiators.

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Table 1
Required Parts for Converting Folded Core Radiators to Multiple Row Module Radiators
Radiator Size	Original Folded Core Radiator	Applicable Multiple Row Module Assembly	Qty of Assemblies	Qty of 4P-9942 End Tank Seals	Qty of 4P-9943 End Tank Seals	Qty of 2W-5555 Straps
"33/7"	7C-2719	4P-0891	7	7	7	6
"36/8"	7C-2488	4P-0893 ⁽¹⁾	8	8	8	7
"40/9"	7C-2744	4P-0894 ⁽²⁾	9	9	9	8
"46/10"	7C-4502	6I-3298 ⁽³⁾	10	10	10	9
"50/11"	7C-4501	Custom	11	11	11	10
"60/13" ⁽⁴⁾	7E-7527	4P-5711 ⁽⁵⁾ ⁽⁶⁾ ⁽⁷⁾	13	13	13	12
		117-4938 ⁽⁶⁾ ⁽⁷⁾ ⁽⁸⁾
		118-5207 ⁽⁶⁾ ⁽⁷⁾ ⁽⁹⁾
"75/25"	7E-7528	n/a	-	-	-	-

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^( 1 )	For operation in high ambient temperatures, use the 7E-7993 Radiator Core As. This change requires lengthening the side channels in order to accept longer cores.
^( 2 )	For operation in high ambient temperatures, use the 7E-9595 Radiator Core As.
^( 3 )	For operation in high ambient temperatures, use the 7E-7994 Radiator Core As.
^( 4 )	In addition to the twelve 2W-5555 Straps, two brackets are needed to fasten the cores to the side of the channels. These brackets can be made by modifying 2W-7931 Brackets. Refer to Illustration 1.
^( 5 )	Radiators that use the 4P-5711 Radiator Core As have approximately 3 percent higher ambient temperature capacity than the 7E-7527 Radiator .
^( 6 )	These comparisons are based on clean cores.
^( 7 )	For specific ambient capability, refer to the price list.
^( 8 )	Radiators that use the 117-4938 Radiator Core As have approximately 8 percent higher ambient temperature capacity than the 7E-7527 Radiator .
^( 9 )	Radiators that use the 118-5207 Radiator Core As have approximately 13 percent higher ambient temperature capacity than the 7E-7527 Radiator .

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Illustration 1	g00832092
2W-7931 Bracket Remove material from location (1) until dimension (A) is 45 mm (1.8 inch). Then, weld the two parts of the bracket together.