Can the high-pressure fuel pump seal on a Cat XQ60 generator be replaced without removing the timing cover?

[Mr. McTuggart]

After cleaning everything up and fixing another leak, I noticed oil starting to seep around the pump after a few hours of running. It almost seems like the O-ring or seal between the pump and front case is failing.

 

[George]

On a lot of CAT generator engines, the high-pressure fuel pump seal or O-ring can usually be replaced without fully removing the timing cover, but it really depends on the exact engine arrangement inside the XQ60.