New Solenoid Valve For Rotor Lift System{8245}
Usage:
RR-250 Road Reclaimers, SS-250 Soil Stabilizers
Description of Change: A new solenoid valve is used in the rotor lift system on RR-250 Road Reclaimers and SS-250 Soil Stabilizers. The new solenoid valve has a 6900 kPa (1000 psi) relief valve added to the lower circuit.
Adaptable To: The new 7X8780 Solenoid Valve is a direct replacement for the former 778617 Solenoid Valve (RayGo part no. A140712). Use of the new solenoid valve is effective with RR-250 Road Reclaimer 6ED90 and SS-250 Soil Stabilizer 6DD115.
Caterpillar Information System:
1988/12/12 New Switch For Back-Up Alarm{7406}
1988/12/12 Parts Needed If Air Compressor Tubes Replaced{4257,1803}
1988/12/12 New Operator Monitor Group Used{7490}
1988/12/12 Revised Instructions For Installation of New Maintenance Free Batteries{1401,1400}
1988/12/05 Operation Of Feeder Sensor Control{8216}
1988/12/05 Improved Air Conditioner Thermostat Switches Have Tin-Plated Internal Parts{7320}
1988/12/05 Hydraulic Pressure Settings For Backhoe Loaders{5050,5450}
1988/12/05 Improved Coupler Pin Helps Prevent Cylinder Rod Bending{6129}
1988/12/05 New Air Tank Drain Valve Used{4250,4272}
1988/11/28 More Charts And Decals Available For Lubrication And Maintenance Intervals {0374,0375,7500}
1988/11/28 Stronger, Longer Ring Gear Retainers For Final Drives {4054,4084}
1988/11/28 Improved Wheel And Longer Bolts Provide Better Retention Of Front Brake Disc {4255,4201}
1988/12/12 New Mounting Bolts Used In Aftercooler Housings{1063,1058}
1988/12/12 Maintenance Procedure Extends Service Life Of Exhaust Manifold Studs{1050}
1988/12/12 New Alternator Drive Pulley Has Hardened Wear Sleeve; New Seal Used On Pulley{1425,1357}
1988/12/12 Oil Cooler Bypass Elbow Changed To Prevent Bypass Valve Seizure{1314,1318}
1988/12/19 New Material Used For Rotating Seal Rings In Some Power Shift Transmissions, Steering Clutches And Torque Converters {3101,3150,4100}
1988/12/19 Cold Weather Readiness Checks {1456,1250}
1988/12/19 New Circle Drive Gerotor Motor Groups Provide Higher Torque To Circle Drive {5082}
1988/12/19 New Brake Disc Assemblies, Axle Lubricant Reduce Brake Chatter {3278,4255}
1988/12/19 Stronger Spacers Can Be Used On Stabilizer Street Pads {6505}
1988/12/19 New Latch Used For Engine Side Doors {7263}
1988/12/19 New Axle Differential Group Used {3258}
1988/12/19 New Detent Group Available For Hoist Control Valve {5051}