FOAM 4C9657 - Caterpillar

( 2SJ902-915, 2SJ971-919, 2SJ921-931, 2SJ933, 2SJ935, 2SJ938, 2SJ942, 2SJ943, 2SJ945-947, 2SJ949, 2SJ950, 2SJ952, 2SJ953, 2SJ955, 2SJ958, 2SJ960, 2SJ961, 2SJ963, 2SJ964, 2SJ967, 2SJ971, 2SJ974-978, 2SJ980-983, 2SJ988, 2SJ990, 2SJ992, 2SJ994, 2SJ996-999, 2SJ1001-1006, 2SJ1008-1025, 2SJ1027-Up ) ExcavatorsSUPPLEMENT: 04/06/92Service Magazine; March 2, 1992; Page 4; "New Hydraulic Pressure Indicator Switch Available" for 225D Excavators.The Product Identification Numbers (PIN's) are incorrect. The correct PIN's are: 225D (2SJ902-915, 917-919, 921-931, 933, 935, 938, 942, 943, 945-947, 949, 950, 952, 953, 955, 958, 960, 961, 963, 964, 967, 971, 974-978, 980-983, 988, 990, 992, 994, 996-999, 1001-1006, 1008-1025, 1027-Up) Excavators--------------- END SUPPLEMENT ---------------Description of Change: A new indicator switch used to sense hydraulic tank pressure is available on the listed excavators. The new switch improves the reliability of de-activating the warning light for hydraulic tank pressure.Adaptable To: The new 090721 Pressure Switch Assembly, when used with a 4M5317 Bushing, is a direct replacement for the former 9W0263 Pressure Switch Assembly in the warning and gauge group. Use the new parts if the warning light for the hydraulic tank pressure stays on for an extended period of time.