STICK AR-MATERIAL HANDLING 2607559 - Caterpillar

Control Valve Additions
Illustration 1.The new control valves feature a building-block design that makes field installation of additional valves much easier (see Illustration 1). Attach a vacuum to the hydraulic tank to help control oil loss. Refer to your parts book for the hydraulic lines required.
The blade lift control valves, right and left, have threaded mounting holes in the body. All bolts from both sides are attached to this body. When adding control valves, longer bolts will be required. When removing control valves, shorter bolts will be required. Refer to your parts book for the correct bolts for your application.
Procedure To Add An Extra Control Valve
In order to ensure proper alignment and to help the addition of a new control valve, see your Service Manual for the correct removal and installation procedure for the implement control valves.1. With the control valve group on a clean work bench, set the control valve group in an upright position. This will assist in maintaining proper alignment of the control valve group during the disassembly and assembly procedure. Three bolts go through the end covers and bolt to the blade lift control valve. Remove one bolt. Install a 3/8 inch threaded rod in the bolt hole. Remove the other two bolts and install a 3/8 inch threaded rod in each hole. Remove the end cover and set aside. The 3/8 inch threaded rods will help maintain proper alignment between the control valves and the seal plates. Valves on the early machines had excessive clearance between the bolt holes and bolts. Later machines provide a much tighter fit. See your Caterpillar dealer for the correct control valve body for your application.2. Clean all surfaces on the control valve groups and the new seal plates before starting any assembly procedures.
Illustration 2.3. Install the new control valve group using new seal plates between the control valves, (see Illustration 2).4. To ensure a proper seal between the control valves, carefully align the control valve seals and control valve bodies on the 3/8 inch threaded rods. 5. Install the end cover previously removed. Use the correct bolts found in your parts book for the number of control valves being used.6. Remove one 3/8 inch threaded rod and replace it with the correct bolt. Tighten the bolt only enough to hold the group together. Check for proper alignment of the seal plates and the control valves. Repeat this step until all 3 bolts have been installed. Tighten the bolts to the final torque specification.7. Install the control valve group on the machine.
Illustration 3.8. Remove the rubber plug in the plate directly above the new control valve (see Illustration 3).9. Install a new boot in the plate.
Illustration 4.10. Install the rod assembly on the control valve lever with one bolt and lockwasher (see Illustration 4).Control Levers
The control levers are location specific, with the capacity of fourteen, seven per side. The shaft the control levers ride on is designed to be shortened or lengthened to accommodate different numbers of levers by