Guide Springs and Valve Lifter Assemblies are Breaking in Certain C9 and C9.3 Engines{1108, 1209} Caterpillar

Agricultural Tractor:

MT735 (S/N: AKN1-UP)

MT745 (S/N: ALA1-UP)

MT755 (S/N: ALM1-UP)

MT765 (S/N: AMS1-UP)

MTC735 (S/N: 8121-UP)

MTC755 (S/N: 8141-UP)

MTC765 (S/N: 8151-UP)

Articulated Truck:

725C (S/N: LFB1-UP; TFB1-UP)

Combine:

Lexion 470 R (S/N: 7651-UP)

Lexion 475 R (S/N: 7671-UP)

Track Drills:

MD5050T (S/N: DR91-UP)

MD5075 (S/N: SER1-UP)

MD5090 (S/N: SEW1-UP)

Landfill Compactor:

816F Series 2 (S/N: BZR1-UP)

Soil Compactor:

815F Series 2 (S/N: BYN1-UP)

Engine:

C-9 (S/N: CLJ1-UP)

C9 (S/N: SRB1-UP; F9D1-UP; LFE1-UP; C9F1-UP; CKP1-UP; LFR1-UP; X3R1-UP; C9Y1-UP; P7Z1-UP)

Generator Set:

C9 GEN SET (S/N: C9E1-UP; NBP1-UP; NB31-UP)

C9 MARINE GEN (S/N: SJB1-UP)

C9 MARINE GS (S/N: C9A1-UP)

Industrial Engine:

C9 INDUSTRIAL (S/N: JSC1-UP; MBD1-UP; REH1-UP; JLW1-UP)

C9.3 (S/N: C9N1-UP; D9N1-UP; CA91-UP; CS91-UP)

Marine Engine:

C9 MARINE (S/N: C9B1-UP; CSN1-UP; X9X1-UP; Z9X1-UP; X9Y1-UP)

Excavator:

330C (S/N: CYA1-UP; HAA1-UP; MCA1-UP; JAB1-UP; D3C1-UP; JCD1-UP; KDD1-UP; RBH1-UP; B1K1-UP; JNK1-UP; B2L1-UP; BTM1-UP; B3M1-UP; MKM1-UP; B4N1-UP; CAP1-UP; GKX1-UP; DKY1-UP; CGZ1-UP)

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; C5K1-UP; E4K1-UP; FFK1-UP; H3K1-UP; L2K1-UP; PCK1-UP; RDK1-UP; PEL1-UP; JJM1-UP; LEM1-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; 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: WBC1-UP; WDC1-UP; YCF1-UP; XBH1-UP; ELR1-UP; FAR1-UP; EFT1-UP; ZCT1-UP; TLY1-UP)

336E (S/N: JEA1-UP; RZA1-UP; KED1-UP; YCE1-UP; TEG1-UP; BMH1-UP; FJH1-UP; GTJ1-UP; JRJ1-UP; SSL1-UP; YEP1-UP; CMR1-UP; HDW1-UP; BZY1-UP; GNY1-UP; TMZ1-UP)

336F (S/N: RKB1-UP; KGH1-UP; SSN1-UP; WTZ1-UP)

340D (S/N: JTN1-UP)

340D2 (S/N: HHK1-UP)

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

M330D (S/N: KRE1-UP; MBR1-UP)

Track Feller Buncher:

2390 (S/N: P3H1-UP)

2491 (S/N: P5J1-UP)

511 (S/N: 5111-UP)

521 (S/N: 5211-UP)

521B (S/N: F7B1-UP)

522 (S/N: 5221-UP)

522B (S/N: F7C1-UP)

532 (S/N: 5321-UP)

541 Series 2 (S/N: F7D1-UP)

541 (S/N: 5411-UP)

551 (S/N: 5511-UP)

552 Series 2 (S/N: F7G1-UP)

552 (S/N: 5521-UP)

TK711 (S/N: 1011-UP)

TK721 (S/N: 1021-UP)

TK722 (S/N: 1031-UP)

TK732 (S/N: 1041-UP)

TK741 (S/N: 2021-UP)

TK751 (S/N: 3011-UP)

TK752 (S/N: 3021-UP)

Material Handler:

MH3049 (S/N: HPB1-UP)

MH3059 (S/N: RBR1-UP)

Motor Grader:

12H (S/N: CBK1-UP; AMZ1-UP; 1251-UP)

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

12M Series 3 (S/N: N9B1-UP; N9F1-UP)

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

140M Series 3 (S/N: N9D1-UP; N9J1-UP)

140M (S/N: B9G1-UP; D9G1-UP)

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

160M Series 3 (S/N: N9E1-UP; N9K1-UP)

160M (S/N: B9E1-UP; B9L1-UP; B9T1-UP; D9T1-UP)

Mobile Hydraulic Power Unit:

330C MHPU (S/N: MSD1-UP; MSL1-UP)

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)

Petroleum Engine:

C9 PETROLEUM (S/N: P9L1-UP; KLW1-UP; P9W1-UP; KLX1-UP)

Petroleum Power Train Package:

CX31-P600-C9I (S/N: PDZ1-UP)

TH31-C9I (S/N: PAZ1-UP)

TH31-C9P (S/N: PFZ1-UP)

TH31-C9T (S/N: PAY1-UP)

Petroleum Transmission:

TH31-E61 (S/N: SKY1-UP)

Track-Type Loader:

973C (S/N: BCP1-UP; LDX1-UP)

973D (S/N: LCP1-UP)

Track-Type Tractor:

D6R Series II (S/N: BNC1-UP; AFD1-UP; CAD1-UP; ADE1-UP; BLE1-UP; BRE1-UP; DAE1-UP; ACJ1-UP; BMJ1-UP; BRJ1-UP; BMK1-UP; BNL1-UP; AEM1-UP; AFM1-UP; AGM1-UP; BPM1-UP; AEP1-UP; BPP1-UP; BPS1-UP; BLT1-UP; FDT1-UP; AAX1-UP; BMY1-UP; BPZ1-UP; BRZ1-UP)

D6R Series III (S/N: GJB1-UP; WCB1-UP; HDC1-UP; RFC1-UP; TBC1-UP; HCD1-UP; HKE1-UP; WRG1-UP; MTJ1-UP; DMK1-UP; JEK1-UP; EXL1-UP; JDL1-UP; DLM1-UP; LFM1-UP; LGP1-UP; DPS1-UP; GMT1-UP; MRT1-UP; EXW1-UP)

D6R (S/N: A6M1-UP; JEN1-UP; S6T1-UP; S6X1-UP; S6Y1-UP; C6Z1-UP)

D6T (S/N: JHB1-UP; KSB1-UP; ZEB1-UP; ZJB1-UP; JZC1-UP; SMC1-UP; DTD1-UP; JWD1-UP; LBD1-UP; RAD1-UP; LAE1-UP; DJG1-UP; WCG1-UP; WFH1-UP; EJJ1-UP; LKJ1-UP; SLJ1-UP; GMK1-UP; RRK1-UP; SNK1-UP; KJL1-UP; MEL1-UP; SKL1-UP; TSM1-UP; WLM1-UP; KMR1-UP; PLR1-UP; WES1-UP; GCT1-UP; SGT1-UP; JRW1-UP; RCW1-UP; RLW1-UP; LAY1-UP; HTZ1-UP; PEZ1-UP; CR31-UP)

D7E (S/N: HKA1-UP; TJA1-UP; MDB1-UP; SCG1-UP; SSH1-UP; TAN1-UP; LTW1-UP)

D7R (S/N: DSH1-UP; DLN1-UP; DJR1-UP)

Wheel Dozer:

814F Series 2 (S/N: BXG1-UP)

Wheel Loader:

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

966M Series XE (S/N: P6C1-UP)

966M (S/N: DYC1-UP; KJP1-UP)

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

972M Series XE (S/N: EDW1-UP)

972M (S/N: A8P1-UP; JPR1-UP)

Wheel Tractor-Scraper:

627G (S/N: DBD1-UP)

627H (S/N: LCT1-UP; DBW1-UP)

627K (S/N: WTC1-UP; WTN1-UP)

637G (S/N: DFJ1-UP; DEY1-UP)

Introduction

Use the solution that is identified below, in order to resolve the problem.

Problem

Reports have been made of the guide springs failing and the valve lifter assemblies failing on various C9 and C9.3 engines.

Note: These failures lead to valve lifter and cam lobe damage requiring extensive repairs.

Solution

Update to new part numbers.

When making repairs in the field, only use guide springs that do not have a part number stamped in the body.

Rework Procedure

Note: Highly recommended that all of the guide springs and all of the valve lifter assemblies be updated to the new parts whenever the cylinder head is removed for any service.

Inspect the camshaft lobes, lifter bores, and all other components for any damage or abnormal wear and repair as necessary.

Note: The 304-5260 Guide Spring can still be ordered for the 3208 applications. If the 304-5260 Guide Spring is ordered for the C9 and C9.3 applications, the order will be denied. Only use the new part numbers listed above in table 1 for the C9 and C9.3 applications.