2013/08/06 Caterpillar

Excavator:

330D (S/N: RDA1-UP; KAB1-UP; GBC1-UP; PFC1-UP; NBD1-UP; R2D1-UP; GGE1-UP; NEF1-UP; B6H1-UP; EAH1-UP; LCJ1-UP; THJ1-UP; FFK1-UP; PCK1-UP; RDK1-UP; LRM1-UP; ERN1-UP; JLP1-UP; MWP1-UP; LDR1-UP; HAS1-UP; RAS1-UP; EDX1-UP; MEY1-UP; T2Y1-UP)

336D (S/N: PTB1-UP; SKE1-UP; JBF1-UP; J2F1-UP; PRF1-UP; LMG1-UP; MYG1-UP; KDJ1-UP; WRK1-UP; W3K1-UP; MPL1-UP; ZML1-UP; PPN1-UP; MYP1-UP; JER1-UP; JWR1-UP; DTS1-UP; MDS1-UP; NLS1-UP; JBT1-UP; KKT1-UP; M4T1-UP; WET1-UP; PGW1-UP; EMX1-UP)

336D2 (S/N: WDC1-UP; YCF1-UP; XBH1-UP; FAR1-UP; EFT1-UP; ZCT1-UP; TLY1-UP)

336E (S/N: RZA1-UP; KED1-UP; YCE1-UP; TEG1-UP; FJH1-UP; GTJ1-UP; JRJ1-UP; SSL1-UP; YEP1-UP; CMR1-UP; BZY1-UP; TMZ1-UP)

340D (S/N: JTN1-UP)

340D2 (S/N: HHK1-UP)

345D (S/N: RGD1-UP; YEE1-UP; RGG1-UP; EEH1-UP; KFH1-UP; RAJ1-UP; MLK1-UP; NLM1-UP; JKN1-UP; PBT1-UP; LKY1-UP)

349D (S/N: JGB1-UP; WTD1-UP; GKF1-UP; NNF1-UP; PZG1-UP; KLH1-UP; RBJ1-UP; MEN1-UP; KHS1-UP)

349E (S/N: FJB1-UP; DGE1-UP; SPG1-UP; TFG1-UP; RGH1-UP; KCN1-UP; MZW1-UP; KFX1-UP; MPZ1-UP; WHZ1-UP)

Mobile Hydraulic Power Unit:

330D MHPU (S/N: D3D1-UP; H3D1-UP; M3D1-UP; GMN1-UP)

336D MHPU (S/N: J6D1-UP; L5K1-UP; M3M1-UP; M3N1-UP; M2P1-UP; M3S1-UP; JRX1-UP; L5X1-UP; NBZ1-UP)

336E MHPU (S/N: PCE1-UP; RBS1-UP; DSZ1-UP; T3Z1-UP)

345D MHPU (S/N: P5D1-UP; L5R1-UP)

349D MHPU (S/N: DKN1-UP; MCX1-UP)

349E MHPU (S/N: JAE1-UP; S3P1-UP; MTS1-UP)

Description of Change: A new hose clamp is now used on the machines listed. The new clamp has been changed to a more appropriate size hose clamp in order to secure the hose and prevent coolant leakage. Refer to the following illustration for the location of the improved hose clamp.

Illustration 1	g03413728
336E (1) Location of clamp

Illustration 2	g03413730
349E (1) Location of clamp

Illustration 3	g03413733
336D (1) Location of clamp

Illustration 4	g03413734
349D (1) Location of clamp

Adaptable To:

Table 1

New and Former Hose Clamp
New Part Number	Part Name	Former Part Number
8T-4984	Hose Clamp	144-0367

Verify if your machine is equipped with the 144-0367 Hose Clamp. In order to know which clamp is equipped on your machine, check the stamp that is on the clamp. Illustration 5 shows the location of the stamp. If 70-92 is stamped on the clamp, it is the 144-0367 Hose Clamp. If 57-79 is stamped on the clamp, it is the 8T-4984 Hose Clamp.

Illustration 5	g03413760
Location of stamp

Replace the 144-0367 Hose Clamp with a new 8T-4984 Hose Clamp if the coolant has leaked from the various locations of the clamps. Tighten the 8T-4984 Hose Clamp to the torque of 11 ± 1 N·m (8 ± 1 lb ft). The clamp is installed correctly when the Belleville washer stacks are nearly collapsed flat and there are no cracks.

Illustration 6	g03413818
Belleville washer