2012/09/13 Caterpillar

Excavator:

336E (S/N: YCE1-UP; TEG1-UP; GTJ1-UP; YEP1-UP; CMR1-UP; BZY1-UP; TMZ1-UP)

568 (S/N: BRB1-UP; YJX1-UP)

Motor Grader:

12MSeries 2 (S/N: F9B1-UP; F9M1-UP; R9P1-UP; R9S1-UP)

140MSeries 2 (S/N: M9D1-UP; R9G1-UP; M9J1-UP; R9M1-UP)

160MSeries 2 (S/N: M9E1-UP; M9K1-UP; R9L1-UP; R9T1-UP)

Mobile Hydraulic Power Unit:

336E MHPU (S/N: DSZ1-UP; T3Z1-UP)

Track-Type Tractor:

D6T (S/N: KSB1-UP; ZJB1-UP; DTD1-UP; EJJ1-UP; SLJ1-UP; GMK1-UP; RRK1-UP; TSM1-UP; WLM1-UP; PLR1-UP; JRW1-UP; RCW1-UP)

D7E (S/N: TJA1-UP; TAN1-UP)

Wheel Loader:

966K (S/N: PBG1-UP; TFS1-UP; NGX1-UP)

972K (S/N: PEM1-UP; Z4W1-UP)

Description of Change: A new unit injector wiring harness is now available for Tier 4i C9.3 Machine Engines. The new harness incorporates a protective sleeve on the exposed section of wiring connecting to the fuel injector to provide added protection against abrasion. Refer to Illustration 1.

Illustration 1	g03206556
(1) Location of protective sleeve

Adaptable To: The new unit injector wiring group replaces the existing wiring group on the serial numbers listed above. Refer to Table 1 for a list of the new part numbers and the part numbers that are being replaced.