2013/06/20 Caterpillar

Excavator:

345D (S/N: DPA1-UP; BYC1-UP; HLC1-UP; RGD1-UP; RAE1-UP; YEE1-UP; NEG1-UP; RGG1-UP; EEH1-UP; KFH1-UP; RAJ1-UP; MLK1-UP; NLM1-UP; JKN1-UP; FES1-UP; PBT1-UP; BYW1-UP; LKY1-UP)

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

Mobile Hydraulic Power Unit:

345C MHPU (S/N: NRF1-UP)

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

Additional support for the bucket circuit tube assembly is available for the machines listed above. Operation of the ripper can cause fatigue at the foot of the tube assembly. The additional support will help to prevent cracks at the foot of the tube assembly and extend the service life of the tube assembly. Refer to the following rework procedure for additional tube support.

Rework Procedure

1. Fabricate plate 1 and 2 along with block 1 and 2 as shown in Illustration 1 and Illustration 2.

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Illustration 1	g03396516

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Illustration 2	g03396520

2. Assemble the support assembly with plate 1, 2 and block 2.

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Illustration 3	g03396538

3. Install the support as and block 1 to the machine.

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Illustration 4	g03396659
(1) 286-6565 Tube As (2) Two 8T-7811 Bolts (3) Two 8T-4184 Bolts (4) Two 8T-4223 Hard Washers (5) Support assembly (6) Block 1

4. Procure two 8T-7811 Bolts

5. Loosen two 8T-4184 Bolts and two 8T-4223 Hard Washers .

6. Attach the support assembly at the hose of plate 1 with 2 8T-4184 Bolts and two 8T-4223 Hard Washers. Retighten to a torque of 100 ± 20 N·m (74 ± 15 lb ft).

7. Attach block 2 on the support assembly with the clamp on the 286-6565 Tube As with two 8T-7811 Bolts to a torque of 100 ± 20 N·m (74 ± 15 lb ft).