WASHER-RETAINING 1T1250 - Caterpillar

Engines:
3606 (S/N: 8RB822-UP)
3608 (S/N: 1ZD16-UP; 5PG106-UP; 6MC639-UP; 7WR41-UP; 8LL30-UP)
3612 (S/N: 2NZ176-UP; 9FR21-UP; 9RC339-UP)
3616 (S/N: 1FN150-UP; 1PD381-UP)
3618 (S/N: 2MW98-UP)
G3606 (S/N: 3XF323-UP)
G3608 (S/N: 4WF200-UP)
G3612 (S/N: 1YG228-UP)
G3616 (S/N: 4CG219-UP)
Reference: Engine News, SEBD9224, June 1995, "Allignment Of Front Gear Train Idler Shaft"Description of Change: New gear assemblies (1) and (2) are used in the front gear group on these engines. The new gear assemblies include a new bearing that is made from a stronger material. The inside diameter of the new gear assemblies is machined after the bearing is pressed into position. This results in increased control of the clearance between the new gear assemblies and the idler shafts (B).
Illustration 1 g00794958
This illustration shows the locations of the new 180-3864 Gear Assembly (1) and the new 180-3865 Gear Assembly (2) in the 1W-0790 Front Gear Group . (A) Front Housing (B) 1N-3842 Idler Shaft (1) 180-3864 Gear Assembly (2) 180-3865 Gear Assembly Adaptable To: The new 180-3864 Gear Assembly is a direct replacement for the former 7E-8173 Gear Assembly in the 1W-0790 Front Gear Group. The new 180-3865 Gear Assembly is a direct replacement for the former 7E-8174 Gear Assembly in the 1W-0790 Front Gear Group. The former gear assemblies are cancelled.Note: In the Reference, the information about the installation of the idler shafts in the front gear group is still applicable.