TUBE AS 2889768 - Caterpillar

( 7NC, 8RC, 9HC, 1DD, 1YD, 2SD, 3MD, 4KD, 7EG ) TractorsReference: Service Magazine; February 3, 1992; Page 1; "New Radiator Groups Have Improved Multirow Module Radiators And Seals."Description of Change: The new IMRM radiator cores have an "in line" tube orientation that allows more debris to pass through the radiator. This extends the period the machine can operate prior to plugging the radiator. The new end tank seals provide improved sealing and do not require the use of supports.Adaptable To: New 4P0891 And 6I4247 IMRM's are available to replace the former 7E3330 and 7E3329 MRM's respectively. The former MRM's are canceled. The new IMRM's are compatible with the former MRM's. Both new IMRM and MRM can be assembled together in the same radiator. New 4P9942 and 4P9943 End Tank Seals replace the former 9Y1654 and 9Y1655 End Tank Seals. The 7E2308 Supports are not required and should not be used with the new end tank seals. The MRM radiator on direct drive tractors used four 7E3330 MRM's and one 7E3329 MRM. The 7E3329 MRM was a special end core. The MRM radiator on power shift tractors with air conditioning used three 7E3330 MRM's and one 7E3329 MRM on each end of the radiator. The attachment MRM radiator on power shift tractors without air conditioning used four 7E3330 MRM's and one 7E3329 MRM on each end of the radiator. The MRM radiator was available on the D5H Tractors in the following list.
7NC1-40198RC1-44519HC1-40651DD1-43311YD1-43082SD1-42913MD1-41214KD1-41927EG1-87D5H Tractors built after those identified in the proceeding list have IMRM radiators. See the Reference Article. These tractors have new radiator groups that eliminate the need for special end modules. These new radiators are not adaptable to replace the MRM radiators with considerable rework of the radiator guard.