mbfroof
New Member
I recently purchased a 1994 GMC 7500 with a Hi-Ranger 5HA-48PBI boom that has a 2 man bucket. I do not have a manual for the boom. I have a problem with the bucket controls. The bucket controls will not lift the boom from the resting position. We found that one of the small nylon lines that go from the bucket hand controls to the boom is leaking. So should we change all the lines from the hand controls to the boom? What type of fluid does this part of the system use and how should we go about servicing this part of the system? Also the hydraulic system under the turret, should we drain all the fluid and replace the fluid and filters? How should we complete this servicing and what type of fluid do we use? Does anyone know where we can find a manual for the Hi-Ranger 5HA-48PBI Boom? Any help with this Hi-Ranger would be greatly appreciated. Thank You!