2012/02/06 Caterpillar

Excavator:

311D (S/N: CLA1-UP; LKA1-UP; PNJ1-UP; DWR1-UP; AKW1-UP; DDW1-UP)

312D (S/N: SKA1-UP; JBC1-UP; RKF1-UP; PHH1-UP; FBJ1-UP; LRK1-UP; XGK1-UP; RHL1-UP; DLP1-UP; KES1-UP)

312E (S/N: MJD1-UP; WEY1-UP)

315D (S/N: JHA1-UP; KBD1-UP; TLE1-UP; BZN1-UP; CJN1-UP; JGS1-UP)

316E (S/N: DZW1-UP; YZZ1-UP)

319D (S/N: ZCA1-UP; AYF1-UP; BZH1-UP; FMH1-UP; WBJ1-UP; KFM1-UP; KRM1-UP; RJP1-UP; EAW1-UP; DAY1-UP; ZGZ1-UP)

320D (S/N: DFB1-UP; M4B1-UP; ZGB1-UP; HJC1-UP; DHE1-UP; TAE1-UP; A6F1-UP; A8F1-UP; BZF1-UP; KAF1-UP; KGF1-UP; MGG1-UP; MCH1-UP; TDH1-UP; XCK1-UP; FAL1-UP; RBL1-UP; KLM1-UP; SPN1-UP; WBN1-UP; WJN1-UP; BZP1-UP; GDP1-UP; GKS1-UP; PDS1-UP; SNS1-UP; YDS1-UP; EJT1-UP; SRT1-UP; BWW1-UP; EAX1-UP; GMX1-UP; PCX1-UP; PHX1-UP; BWZ1-UP; CYZ1-UP; JFZ1-UP)

320E (S/N: TNJ1-UP; WBK1-UP; TFX1-UP; NAZ1-UP)

323D (S/N: WGC1-UP; YSD1-UP; NDE1-UP; WNE1-UP; GTF1-UP; ZMF1-UP; CWG1-UP; JLG1-UP; LFL1-UP; NES1-UP)

323E (S/N: RAP1-UP; TDW1-UP)

324D (S/N: EJC1-UP; MND1-UP; BYE1-UP; JJG1-UP; ECH1-UP; TRH1-UP; BTK1-UP; JGK1-UP; SYM1-UP; AWN1-UP; TSN1-UP; DFP1-UP; JKR1-UP; JZR1-UP; JLS1-UP; JAT1-UP; PYT1-UP; CJX1-UP)

324E (S/N: TLF1-UP; LDG1-UP; PNW1-UP)

325D (S/N: GPB1-UP; NAC1-UP; KBE1-UP; PKE1-UP; C4H1-UP; DBH1-UP; C7K1-UP; ERK1-UP; RJK1-UP; C8L1-UP; LAL1-UP; MCL1-UP; C9M1-UP; A3R1-UP; GBR1-UP)

328D (S/N: SWF1-UP; RMX1-UP)

329D (S/N: MNB1-UP; XDB1-UP; BFC1-UP; J8D1-UP; BBF1-UP; CZF1-UP; DJF1-UP; L5G1-UP; JHJ1-UP; RSK1-UP; WDK1-UP; EBM1-UP; TPM1-UP; BYS1-UP; WLT1-UP; LFW1-UP; YFW1-UP; SCY1-UP; TAY1-UP; DTZ1-UP)

329E (S/N: RLD1-UP; TST1-UP; PLW1-UP)

330D (S/N: R2D1-UP; GGE1-UP; EAH1-UP; THJ1-UP; C5K1-UP; E4K1-UP; FFK1-UP; H3K1-UP; L2K1-UP; PEL1-UP; JJM1-UP; LEM1-UP; LRM1-UP; ERN1-UP; MWP1-UP; RAS1-UP)

336D (S/N: PTB1-UP; SKE1-UP; JBF1-UP; J2F1-UP; PRF1-UP; LMG1-UP; MYG1-UP; KDJ1-UP; L5K1-UP; WRK1-UP; W3K1-UP; MPL1-UP; ZML1-UP; PPN1-UP; MYP1-UP; M2P1-UP; JER1-UP; JWR1-UP; DTS1-UP; MDS1-UP; NLS1-UP; JBT1-UP; KKT1-UP; M4T1-UP; WET1-UP; PGW1-UP; EMX1-UP; L5X1-UP)

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

345C (S/N: TBA1-UP; L5B1-UP; SPC1-UP; WDE1-UP; GBH1-UP; GPH1-UP; SCN1-UP; M2R1-UP; D3S1-UP; LYS1-UP; BWY1-UP)

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; L5R1-UP; FES1-UP; PBT1-UP; LKY1-UP)

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

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

365C (S/N: ELC1-UP; FEN1-UP; PAR1-UP; MCS1-UP; MCY1-UP)

374D (S/N: PJA1-UP; PAP1-UP; PAS1-UP; PAX1-UP)

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

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

Mobile Hydraulic Power Unit:

312D MHPU (S/N: DXH1-UP; M3L1-UP)

315D MHPU (S/N: HLG1-UP)

320D MHPU (S/N: MMD1-UP; PRR1-UP; GPX1-UP)

323D MHPU (S/N: DCJ1-UP)

324D MHPU (S/N: M4A1-UP; KJR1-UP)

325D MHPU (S/N: SRC1-UP; C3N1-UP; X3N1-UP)

329D MHPU (S/N: J9D1-UP; L5H1-UP)

329E MHPU (S/N: K2L1-UP)

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

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

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

345C MHPU (S/N: M3E1-UP; M3F1-UP)

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

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

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

365C MHPU (S/N: GSZ1-UP)

374D MHPU (S/N: JNZ1-UP)

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

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

The lever for the positioning of the seat cushion has been improved. The material has changed from plastic to steel. The pushing spring has also been changed from a bar spring to a coil spring. The new parts improve the latching mechanism to provide better friction to the positioning pin.

Procedure to Replace the Lever and Spring

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Illustration 1	g02777056
(1) Bar spring (2) Plastic lever (3) New coil spring (4) New steel lever

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Illustration 2	g02777058
The reverse side of the seat cushion

1. Remove the seat cushion from the seat frame.

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Illustration 3	g02777099
(5) Pin

2. Remove the lever and spring. Push out the pin that is engaged to the lever.

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Illustration 4	g02777101

3. Install the improved 383-5646 Lever and 383-5647 Spring and pin. If the pin is not reusable, replace with a new 383-5648 Pin.