• Thank you for visiting HeavyEquipmentForums.com! Our objective is to provide industry professionals a place to gather to exchange questions, answers and ideas. We welcome you to register using the "Register" icon at the top of the page. We'd appreciate any help you can offer in spreading the word of our new site. The more members that join, the bigger resource for all to enjoy. Thank you!

Cat 345 BL Boom Dropping

S

steed6557

Active Member
Joined
Aug 23, 2011
Messages
31
Location
Florida
Switched bucket curl lines with boom lines and problem moved to bucket. Boom/bucket control valve is brand new from CAT so going back under warranty. Thanks for the help everyone. Have another problem AGS01473 serial#, that two local dealers can't find the problem with so may seek your help again.
 
S

steed6557

Active Member
Joined
Aug 23, 2011
Messages
31
Location
Florida
Well that didn't last long. Boom up and down became jerky again. Plungers for boom up and down are about 1/4 inch lower than the plate in the control handle. With machine running and control handles in neutral, when you engage hydraulics boom goes up and continues to labor pump with cylinders fully extended. Any idea's?
 
P

Per Eriksson

Senior Member
Joined
Oct 24, 2007
Messages
652
Location
Sweden
Sounds like crap gets into the pilot valve, did you pull the old one apart and take a look for metals havings and such? might be some left in the lines going back and forth?
 
You must log in or register to reply here.
Top