• 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!

JLG 660sj year 2001

W

Welington

New Member
Joined
Jan 4, 2016
Messages
2
Location
Brazil
Well, equipment just move forward and high speed. I cant control it. Does anybody know how it works? Is there any proportional valve responsable for drive?
Thanks
Welington.
 
N

Newfiedan

Member
Joined
Mar 30, 2013
Messages
23
Location
saskatoon, sk
Occupation
Product Service manager for saskachtewan
There is a 4 wire plug at the pump that controls forward and reverse as well as a small manual lever to control drive check that plug. As for only having high speed it sounds like the limit switch at the back top area of the boom is stuck making it think the boom is stowed. High speed should disengage when you are above about 20 degrees or so.
 
You must log in or register to reply here.
Top