2010/01/08 Caterpillar

Correct Usage of Seals and Spacers on the Valve Mechanism Covers of Some C9 Engines {1107, 7555}

Usage:

C9 C9E

Generator Set: C9 (S/N: C9E1-UP; C9Z1-UP; SJB1-UP; X3R1-UP)
Industrial Engine: C9 (S/N: JSC1-UP; MBD1-UP; JLW1-UP)
Petroleum Engine: C9 (S/N: P9L1-UP; KLW1-UP)
Petroleum Power Train Package: TH31-C9I (S/N: PAZ1-UP)

The correct seals and spacers must be used on the 263-7821 Valve Mechanism Cover Gp and the 263-7825 Valve Mechanism Cover Gp. Refer to Table 1 and Table 2 for a list of the parts that must be used with the particular valve mechanism covers.

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Illustration 1	g02056253
(1) Part number of the valve mechanism cover

The part number of the valve mechanism cover is stamped on the inside of the cover. Refer to Illustration 1.

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Table 1
Parts for Use with the 263-7821 Valve Mechanism Cover Gp
Part Number	Description	Quantity
217-5701	Bulk Seal	1
246-5083	Spacer Sleeve	11

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Illustration 2	g02056235
263-7821 Valve Mechanism Cover Gp (2) 217-5701 Bulk Seal

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Table 2
Parts for Use with the 263-7825 Valve Mechanism Cover Gp
Part Number	Description	Quantity
285-4106	Valve Cover Seal	1
273-2838	Spacer Sleeve	11

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Illustration 3	g02056275
263-7825 Valve Mechanism Cover Gp (3) 285-4106 Valve Cover Seal

Note: Failure to use the correct seals and spacers on the appropriate valve mechanism covers will result in engine oil leaks and/or failures of the valve mechanism cover.