New Rotocoil Assembly Used In Engine Cylinder Head Groups{1109}
Usage:
Caterpillar Machines Powered By 3500 Engines
Description of Change: A new rotocoil assembly is used to rotate the inlet and exhaust valves in the cylinder head groups on the 3500 Engines in Caterpillar machines. The new rotocoil assembly will provide extended service life.
Adaptable To: The new 133-3814 Rotocoil Assembly is a direct replacement for the 4P-2521 Rotocoil Assembly in the cylinder head groups on the 3500 Engines in Caterpillar machines.
Caterpillar Information System:
1996/12/23 New Sight Gauge Replaces Former Dip Stick For Improved Visibility Of The Front Implement Hydraulic Tank Oil Level{7479}
1996/12/23 Ride Control Accumulator Recharging Procedure Changed{5081,5077}
1996/12/23 New Temperature Sensors Used Which Prevent False Over Temperature Warnings{1906,1400}
1996/12/23 Larger Washer Used With Tube Clamps On Hydrostatic Transmission Prevents Clamp From Loosening{3218}
1996/12/23 Externally Adjusted Relief Valve Used In Steering Control Valve Group{4307,4322}
1996/12/23 Cab Heater Efficiency Improved{7304}
1996/12/23 Grapple Rotator Motor Joint Strengthened{5082,6307}
1996/12/23 Rear Axle Oil Level Raised To Improve Axle Lubrication{3013}
1996/12/23 Service Procedures For Special Application Rollers And Idlers Summarized For Track-Type Troctors{4159,4180}
1996/12/23 Longer Bosses Increase Blade Assembly Service Life{5057,6060,6051,6071,7167}
1996/12/16 Improved Fuel Sender Assembly Available {7481}
1996/12/16 Cab Air Conditioner Group Improvements Eliminate Debris {7320}
1996/12/30 Wiring Harness Routing Changed To Increase Wire Harness Service Life {1408}
1996/12/30 Improved Clapper Spring Available For Pilot Valve Groups {5059,5125,5126}
1996/12/30 Supplement To Service Manual Module; "Differential Lock-Relief Valve Pressure Check" {3264}
1996/12/30 Service Brake Adjustment Procedure Improves Application Pressure And Performance {4251,4269}
1996/12/30 Systems Operation Testing & Adjusting, 966F & 966F Series II Wheel Loader Air System And Brakes, Service Manual Module Available {0374,4250}
1996/12/30 New Hose Assemblies Are Compatible With The Extended Life Coolant (ELC) And Provide Increased Service Life {1380,1395}
1996/12/30 New Thumb Screw Improves The Ability To Secure The Air Filter Grate To The Cover Assembly {7301,7308,7251}
1996/12/30 Shaft Nut Torque Reduced To Prevent Actuator Valve Seizure {3200}
1996/12/30 Controlled Tightening Torque Eliminates Bolt Failure {3209,3215}
1996/12/30 Flywheel Housing To Cylinder Block Joint Improvements {1157,1201}
1997/01/13 Nozzle Assemblies Used To Drain And Refill Hydraulic, Engine, And Transmission Oil{5056,5060,1325,0649}
1997/01/13 Tools For Hydraulic Cylinders Used With ESCO Series 2000 Grapples{5555,0738}