2014/12/18 Caterpillar

Excavator

374F (S/N: AT21-UP; AP41-UP; EBF1-UP; MFL1-UP; DNM1-UP)

385C (S/N: EDA1-UP; MMA1-UP; KGB1-UP; KBC1-UP; SBE1-UP; T2E1-UP; T2F1-UP; KKK1-UP; EAM1-UP; JCM1-UP; WAW1-UP; MNZ1-UP)

390D (S/N: WAG1-UP; BYP1-UP; WAP1-UP; WBT1-UP; KCZ1-UP)

390F (S/N: HJD1-UP; TYE1-UP; MGF1-UP; FEH1-UP; HSM1-UP; GAY1-UP)

Material Handler

MH3295 (S/N: PA91-UP)

Mobile Hydraulic Power Unit

374F MHPU (S/N: DP41-UP; H251-UP)

385C MHPU (S/N: M4E1-UP; MSF1-UP; M3P1-UP; M3W1-UP; E1Y1-UP)

390D MHPU (S/N: M1M1-UP)

390F MHPU (S/N: B371-UP; H271-UP; PT71-UP)

OEM Excavator Based Specialty Solution

374F OEM (S/N: FH91-UP; P4L1-UP)

390F OEM (S/N: N641-UP; P4J1-UP)

Pneumatic Compactor

CW16 (S/N: N6J1-UP)

Description Of Change: The new alternator support brackets are used to help prevent against vibration damage to the alternator.

Adaptable To: The new alternator support brackets are adaptable to the above engines back to first production.

The new and former alternator support brackets are listed in Table 1.

Reference: Special Instruction, REHS9662, "Installation of the 460-1468 Support Bracket on Certain C18 374F and 390F Excavator Engines"

Reference: Special Instruction, REHS9663, "Installation of the 458-7850 Support Bracket on Certain C18 385C and 390D Excavator Engines"The sales models and effective engine serial numbers are listed in Table 2.