2012/05/08 Caterpillar

Cold Planer:

PM-565 (S/N: 3TK1-UP)

PM-565B (S/N: 8GS1-UP)

PM-800 (S/N: 6CD1-UP)

PR-1000C (S/N: 5XC1-UP)

PR-450C (S/N: 7PJ1-UP)

PR-750B (S/N: 8AC1-UP)

PR-750C (S/N: 7CK1-UP)

Landfill Compactor:

836 (S/N: 3RL1-UP; 7FR1-UP)

Excavator:

5110 (S/N: 7GN1-UP; 8HN1-UP)

5110B (S/N: AAA1-UP; AAK1-UP; AAT1-UP)

Motor Grader:

24H (S/N: 7KK1-UP)

Off-Highway Truck/Tractor:

69D (S/N: 9SS1-UP; 9XS1-UP)

73D (S/N: 1GW1-UP)

768C (S/N: 02X1-UP)

769C (S/N: 01X1-UP)

769D (S/N: BBB1-UP; 5TR1-UP; 5SS1-UP)

772B (S/N: 64W1-UP)

773B (S/N: 63W1-UP)

773D (S/N: 7ER1-UP; 7CS1-UP)

773E (S/N: BDA1-UP)

Quarry Truck:

771C (S/N: 3BJ1-UP)

771D (S/N: BCA1-UP; 6JR1-UP; 6YS1-UP)

775B (S/N: 7XJ1-UP)

775D (S/N: 6KR1-UP; 8AS1-UP)

775E (S/N: BEC1-UP; DTE1-UP)

Pipelayer:

589 (S/N: 31Z1-UP)

Track-Type Tractor:

D10N (S/N: 2YD1-UP; 3SK1-UP)

D10R (S/N: 3KR1-UP; AKT1-UP)

D8L (S/N: 4FB1-UP; 53Y1-UP)

D9L (S/N: 14Y1-UP)

D9N (S/N: 1JD1-UP; 5FJ1-UP; 6XJ1-UP)

D9R (S/N: JJB1-UP; ABK1-UP; ACL1-UP; 7TL1-UP; 8BL1-UP; WDM1-UP)

Underground Articulated Truck:

AD40Series II (S/N: 1YZ1-UP)

AD45 (S/N: BKZ1-UP)

AE40 II (S/N: 1ZZ1-UP)

Wheel Dozer:

834B (S/N: 7BR1-UP; 92Z1-UP)

844 (S/N: BBN1-UP; 2KZ1-UP)

Wheel Loader:

988B (S/N: 62Y1-UP; 48W1-UP)

988FSeries II (S/N: 2ZR1-UP)

988F (S/N: 8YG1-UP)

990Series II (S/N: BCR1-UP; 4FR1-UP)

990 (S/N: 7HK1-UP)

992B (S/N: 98S1-UP)

992C (S/N: 42X1-UP; 49Z1-UP; 73W1-UP)

992D (S/N: 7MJ1-UP)

Wheel Tractor-Scraper:

631D (S/N: 24W1-UP; 66W1-UP)

631ESeries II (S/N: 1AB1-UP)

631G (S/N: AWK1-UP; CLR1-UP; AXZ1-UP)

633D (S/N: 25W1-UP)

633ESeries II (S/N: 2PS1-UP)

637D (S/N: 26W1-UP; 27W1-UP)

637ESeries II (S/N: 1FB1-UP)

637E (S/N: 1JB1-UP)

637G (S/N: CEH1-UP; AXT1-UP)

639D (S/N: 99X1-UP)

651E (S/N: 4YR1-UP; 89Z1-UP)

657E (S/N: 6MB1-UP; 5YR1-UP; 6PR1-UP; 6TR1-UP; 7KR1-UP; 86Z1-UP; 87Z1-UP; 90Z1-UP; 91Z1-UP)

All new 40 mm (1.57 inch) DI adapter heads have been improved to provide easier valve lash adjustments. The new valve bridges will be included with the new cylinder heads.

Note: Do not reuse the old valve bridges, return the existing valve bridges with the head.

All new 55 mm (2.16 inch) DI adapter heads have been improved to include bolt holes for the use of exhaust shields.

Refer to Table 1 for a list of part numbers of the cylinder head assemblies that include the changes mentioned above.