SEAL-O-RING 3E6771 - Caterpillar

Articulated Truck725C (S/N: TFB1-UP)730C (S/N: TFF1-UP)735B (S/N: T4P1-UP)740B (S/N: T4R1-UP; E4S1-UP)740B EJECTOR (S/N: T4S1-UP)Electric Power GenerationC13GENSET (S/N: X3M1-UP)C15 PET GEN SET (S/N: LWR1-UP)EngineC13 (S/N: N3F1-UP; KWJ1-UP)C15 (S/N: N5F1-UP; LDN1-UP)C18 (S/N: N8F1-UP; BDN1-UP)Excavator336E (S/N: YCE1-UP; TEG1-UP; GTJ1-UP; YEP1-UP; CMR1-UP; BZY1-UP; TMZ1-UP)336F (S/N: RKB1-UP; SSN1-UP; WTZ1-UP)349E (S/N: DGE1-UP; SPG1-UP; TFG1-UP; RGH1-UP; KCN1-UP; MZW1-UP; KFX1-UP; MPZ1-UP; WHZ1-UP)349F (S/N: BZ21-UP; KEA1-UP; HLB1-UP; HPD1-UP; TEW1-UP)352F (S/N: WNA1-UP; YEG1-UP; A9J1-UP; KBP1-UP)374F (S/N: DNM1-UP)390F (S/N: MGF1-UP)Forest Machine568 (S/N: BRB1-UP; YJX1-UP)Generator SetC15 GEN SET (S/N: T4A1-UP; X5M1-UP)Industrial EngineC9.3 (S/N: CS91-UP; C9N1-UP)Landfill Compactor826K (S/N: 2321-UP)836K (S/N: TWZ1-UP)Mobile Hydraulic Power Unit336E MHPU (S/N: DSZ1-UP; T3Z1-UP)349E MHPU (S/N: S3P1-UP)Motor Grader12M Series 2 (S/N: F9B1-UP; F9M1-UP; R9P1-UP; R9S1-UP)12M Series 3 (S/N: N9B1-UP; N9F1-UP; N9P1-UP; N9R1-UP)140M Series 2 (S/N: M9D1-UP; R9G1-UP; M9J1-UP; R9M1-UP)140M Series 3 (S/N: N9D1-UP; N9G1-UP; N9J1-UP; N9M1-UP)14M Series 3 (S/N: N9S1-UP)160M Series 2 (S/N: M9E1-UP; M9K1-UP; R9L1-UP; R9T1-UP)160M Series 3 (S/N: N9E1-UP; N9K1-UP; N9L1-UP; N9T1-UP)16M Series 3 (S/N: N9Y1-UP)Off-Highway Truck/Tractor770G (S/N: KDH1-UP)772G (S/N: KEX1-UP)Soil Compactor825K (S/N: 2331-UP)Track-Type TractorD6T (S/N: KSB1-UP; ZJB1-UP; JZC1-UP; DTD1-UP; RAD1-UP; EJJ1-UP; SLJ1-UP; GMK1-UP; RRK1-UP; TSM1-UP; WLM1-UP; KMR1-UP; PLR1-UP; WES1-UP; JRW1-UP; RCW1-UP; HTZ1-UP)D7E (S/N: HKA1-UP; TJA1-UP; SSH1-UP; TAN1-UP)D8T (S/N: AW41-UP; FMC1-UP; MLN1-UP; FCT1-UP)D9T (S/N: REX1-UP)Wheel Dozer824K (S/N: 2341-UP)834K (S/N: TWY1-UP)Wheel Loader966K (S/N: PBG1-UP; TFS1-UP)966K Series XE (S/N: NGX1-UP)966M (S/N: DYC1-UP; KJP1-UP)966M Series XE (S/N: P6C1-UP)972K (S/N: PEM1-UP; Z4W1-UP)972M (S/N: A8P1-UP; JPR1-UP)972M Series XE (S/N: EDW1-UP)980K (S/N: W7K1-UP; GTZ1-UP)980M (S/N: KRS1-UP; N8T1-UP)982M (S/N: F9A1-UP; K1Y1-UP)988K (S/N: TWX1-UP)Wheel Tractor-Scraper621H (S/N: DBK1-UP; HKK1-UP)623H (S/N: DBF1-UP)623K (S/N: WTB1-UP)627H (S/N: DBW1-UP)627K (S/N: WTC1-UP)Introduction
This Special Instruction outlines the procedure for installation of the shield and seal on the exhaust manifold of certain C9, C13, C15and C18 Machine and Commercial engines.Required Parts
Table 1
Model Qty Part Number Part Description
C9 2 380-8550 Shield As
2 379-8572 Seal As
C13 2 380-8549 Shield As
2 379-8574 Seal As
C15
C18 2 380-8548 Shield As
2 379-8574 Seal As Installation Procedure
Improper installation of the packing material can result in a manifold fire.
Remove the current shield and packing material from the exhaust manifold and discard.
Do not modify the seal in any way. The modification could result in a manifold fire.
Illustration 1 g03325992
Install seal (1) into one half of clamshell (2).
Illustration 2 g03325998
Fit the lower portion of the seal in contact with center manifold section (4). Be sure that edge (3) fits inside and against center section (4).
Illustration 3 g03326012
Use tape in order to hold the seal in place for installation. The use of anything other than tape may prevent the clamp from properly seating.
Illustration 4 g03326040
Place upper clamshell (6) half in place.Note: Orienting the clamshell horizontally as shown in the picture is recommended.
Illustration 5 g03326046
Install clamp (7) onto clamshell. Tighten the clamp until both halves of the clamshell contact.
Tighten the clamp that secures the shield.Note: Ensure that no seal material is visible after assembly.
Torque the worm gear to: 10 N m (7 lb ft).
Torque the t-bolt clamp to 8 N m (6 lb ft).