New Air Tank Drain Valve Used{4250,4272}
Usage:
IT18B, IT28B Toolcarriers;
518, 528 Skidders and Grapple Skidders;
916, G916, 926E, G926, 936E, G936, 950E, 966E, 980C Loaders
Description of Change: A new drain valve is used on the air tank on the above models. The seal in the new valve is on the pressure side of the valve instead of the outlet (drain) side to prevent the seal from being damaged when the tank is drained. If the seal is damaged, a slow leak can occur after starting the machine. Also, the handle on the new valve is larger and stronger.
Adaptable To: The new 7X7655 Valve directly replaces the former 6K5741 Valve which is still serviced for other applications.
Caterpillar Information System:
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}
1988/11/28 New Mounting Pin Assemblies For Blade Tip Cylinder {5106}
1988/11/21 One-Piece Tappet (Follower) Used In 11 mm (Type 2) Fuel Injectors{1290}
1988/11/21 New Oil Seal For Water Pumps Has Hydrodynamic Grooves{1361,1389}
1988/11/21 Improved Pressure Gauge Sender Used{7450,7485}
1988/11/21 Be Sure To Follow Cooling System Recommendations{1350}
1988/11/21 Fabric Seat And Back Cushions Available For Parts Service{7307,7312}
1988/11/21 New Hydraulic Screed Counterbalance System Available{8225}
1988/11/21 Additional Bolts Used In Trunnion Support For Oscillating Axle{3268,7051}
1988/11/21 New Cover Assembly For Hydraulic Oil Return Filter{5068}
1988/12/05 Improved Coupler Pin Helps Prevent Cylinder Rod Bending{6129}
1988/12/05 Hydraulic Pressure Settings For Backhoe Loaders{5050,5450}
1988/12/05 Improved Air Conditioner Thermostat Switches Have Tin-Plated Internal Parts{7320}
1988/12/05 Operation Of Feeder Sensor Control{8216}
1988/12/12 Revised Instructions For Installation of New Maintenance Free Batteries{1401,1400}
1988/12/12 New Operator Monitor Group Used{7490}
1988/12/12 Parts Needed If Air Compressor Tubes Replaced{4257,1803}
1988/12/12 New Switch For Back-Up Alarm{7406}
1988/12/12 New Solenoid Valve For Rotor Lift System{8245}
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}