BUSHING-TERMINAL 9G4367 - Caterpillar

Landfill Compactor:
826G Series II (S/N: AYH1-UP)
836G (S/N: 7MZ1-UP)
Engine:
3406E (S/N: 4AS1-UP; 1MZ1-UP)
Load Haul Dump:
R2900 (S/N: 5TW1-UP)
Track-Type Tractor:
D8R (S/N: 6YZ1-UP; AKA1-UP)
Wheel Loader:
980G Series II (S/N: AWH1-UP)
988G (S/N: 2TW1-UP)
Wheel Tractor:
824G Series II (S/N: AWW1-UP)
834G (S/N: 6GZ1-UP)
Description of Change: The valve cover seal and the valve cover fastener have been redesigned for the above engines. The new 172-8027 Seal must only be used with (6) new 173-2390 Fastener Assemblies. The old 149-7377 Seal must only be used with (6) old 152-8112 Valve Cover Fastener Assemblies. Interchanging the old seal with a new fastener assembly or the new seal with an old fastener assembly will create an unsatisfactory joint seal. The old 149-7377 Seal is Cancelled Replaced By the new 172-8027 Seal. If the old seal is damaged, or if the old seal is leaking, the seal must be replaced with a new 172-8027 Seal and (6) new 173-2390 Fastener Assemblies. The old 152-8112 Valve Cover Fastener Assembly is still available for situations when the old 149-7377 Seal is undamaged, but the old 152-8112 Valve Cover Fastener Assemblies must be replaced.Adaptable To: The new seal and the new fastener are effective with the following engines:
3406E (1MZ392-Up)Note: The physical differences between the seals and the fastener assemblies are evident by looking at the following illustrations.
Illustration 1 g00765613
(1) New Seal (2) New Fastener (3) Cross sectional view of the new seal
Illustration 2 g00765614
New Fastener (1) Part number (2) Height of the grommet
Illustration 3 g00765833
(1) Cover (2) Old Seal (3) Old Fastener (4) Cross sectional view of the old seal
Illustration 4 g00765615
Old Fastener (1) No part number (2) Height of the grommet