2008/01/21 Caterpillar

Wheel Tractor-Scraper:

613CSeries II (S/N: 8LJ1-UP; TJK1-UP; LCZ1-UP)

613C (S/N: 92X1-UP; 93X1-UP)

613G (S/N: ESB1-UP; DBE1-UP)

Description of Change: The diverter valve is now using a new O-Ring seal and an improved cover on certain Wheel Tractor-Scrapers. The new O-Ring seal and the improved cover will improve the life of the diverter valve.

Adaptable To: The new O-Ring seal and the improved cover is adaptable to the following machines:

• 613C Series II (S/N: 8LJ1-3375; TJK1-UP; LCZ1-UP)

• 613C (S/N: 92X1-UP; 93X1-5157)

• 613G (S/N: ESB1-107; DBE1-101)

• 613C Series II (S/N: 8LJ3376-UP)

• 613C (S/N: 93X5158-UP)

• 613G (S/N: ESB108-UP; DBE102-UP)

Illustration 1	g01446849
(1) O-Ring seal (2) Cover

Illustration 2	g01446850
(1) O-Ring seal (3) Cover

The O-Ring groove in the 1U-2119 Cover (2) and the 1U-2120 Cover (3) is now shallower in order to provide greater force on the O-Ring. Install the new O-Ring seals (1) into the O-Ring groove on the new covers (2) and (3). Replace the former covers with the new covers (2) and (3).