2014/03/27 Caterpillar

Wheel Tractor-Scraper:

621H (S/N: DBK1-UP; HKK1-UP; NYY1-UP; EAZ1-UP)

623H (S/N: EJD1-UP; DBF1-UP)

627H (S/N: LCT1-UP; DBW1-UP)

An improved 310-5541 Power Train Oil Lines Gp is now available for 621H, 623H, and 627H Wheel Tractor-Scrapers. The power train oil lines group is improved with new hose assemblies with higher temperature rating which provide extended service life.

Illustration 1	g03653985

Illustration 2	g03653986
View of A

Replace the current 321-5667 Hose As with a new 457-3750 Hose As (1) in the 310-5541 Power Train Oil Lines Gp .

Replace the current 321-5668 Hose As with a new 456-0056 Hose As (1) in the 310-5541 Power Train Oil Lines Gp .

The hose assemblies provide the supply and return oil flow to the tractor transmission filter.

The improved 310-5541 Power Train Oil Lines Gp is adaptable to all machines that are listed above.