VALVE-BALL 8C1358 - Caterpillar

Truck/Tractor789C (S/N: 2BW1-UP)789D (S/N: SP21-UP; SPD1-UP; SHH1-UP; TWP1-UP)789G (S/N: TR21-UP)793C (S/N: CBR1-UP; 4AR1-UP; ATY1-UP; 4GZ1-UP)793D (S/N: FDB1-UP)MT4400D AC (S/N: MH41-UP; MT41-UP)Power ModulePM3516 (S/N: BPD1-UP)Unit Rig Mining TruckMT4400 AC (S/N: SE41-UP)Wheel Loader994F (S/N: 4421-UP)994G (S/N: 8FR1-UP)994H (S/N: DWC1-UP)994K (S/N: MM91-UP; MRK1-UP)Description Of Change: The new 3516HD crankshaft assemblies use a counterweight with unmachined cheek that is already in production in 3516 and 3512 standard stroke crankshafts. This counterweight will be used in the first 15 positions.Adaptable To: The following changes are adaptable to the products within the listed serial numbers. This change is effective on or after 31 May 2016.New part numbers 506-1982 Crankshaft replaces 448-8942 Crankshaft for 3516B/C HD engines, and 506-1983 Crankshaft replaces 448-8943 Crankshaft for 3516E engines.The 188-0477 Counterweight replaces the 151-5944 Counterweight with machined cheek in these applications.The 448-8941 Counterweight (crew cut) is still used in the 16th position.The 448-8942 Crankshaft Assemblies and 448-8943 Crankshaft Assemblies have been canceled.