GASKET 9S6526 - Caterpillar

Engine3508B (S/N: 2HW1-394)3512C (S/N: LN51-176; LM91-101; ELG1-101; LLK1-144; PNN1-100; PFP1-100; RMS1-339)3516B (S/N: LEK1-158; 1NW1-203)Petroleum Engine3508C PETROLEUM (S/N: LLC1-236; C8E1-101)3512C PETROLEUM (S/N: LLA1-5208,81001-81004; LLB1-164)Description Of Change: The new software used has an improvement to help prevent electrical noise.Adaptable To: The following changes are adaptable to the products within the listed serial numbers, and are effective with all products after the listed serial numbers.The software update contains the following improvement:
Air filter differential pressure derate has changed to be based off the current differential pressure instead of the peak differential pressure.Table 1 shows the new and previous part numbers for this change.
Table 1
New Part Number Part Name Previous Part Number
455-3580 Engine Software 435-8655
559-4495 Engine Software 443-2160
559-4496 Engine Software 443-2161
559-4497 Engine Software 443-2157
559-4498 Engine Software 443-2158
559-4499 Engine Software 475-7453 The new software is available in the form of a flash-file through the Caterpillar Service Information System (SIS). A newer part number may be available. SIS web only displays the latest available flash-file.