Make Sure Back-Up Alarm Switch Is Correctly Installed{7406}
Usage:
All "
G"
Series Motor Graders
Some 3P8990 Back-Up Alarm Switch Assemblies on "G" Series Motor Graders have been replaced only because they were not adjusted correctly. Before replacing a back-up alarm switch, it is important to make sure the switch is installed correctly. See the illustration.
Correct magnet depth.
The 8D5601 Magnet Assembly must be installed to the dimension shown relative to the 3P8990 Back-Up Alarm Switch when the transmission control lever is in reverse.
Caterpillar Information System:
1985/05/20 New Spark Resistant Air Starting Motor Group Has Serviceable Parts{1451}
1985/05/13 Check For Interference Between Water Temperature Regulator And Cylinder Head Bore{1355}
1985/05/13 Improved Radiator Cores Available{1350,1353}
1985/05/13 Preventing Transmission Manual Switch Failures{3168}
1985/05/13 Hydramechanical Governor Fuel Setting Information{1289,1250}
1985/05/13 New Piston Seal For 139.7 mm (5.50") Hydraulic Cylinders{5456,5457,5104,5458}
1985/05/06 Remanufactured Fuel Ratio Controls Are Available In U.S. And Canada{1278,7754}
1985/05/06 Be Sure Correct Piston Rings Are Used On 3400 Series Engines{1215,1214}
1985/05/06 New Bolt And Seal For Brake Make-Up Oil Tank{5056}
1985/05/06 System To Find Internal Fuel Leakage{1250}
1985/05/06 Folded Core Radiators Used In Cooling Systems{1353,1350,1351}
1985/05/06 New Bearing Housings Available For Turbochargers{1052,1053,1056}
1985/05/20 New Temperature Recorder Group (Crayons) Indicate Surface Temperature{0776}
1985/05/27 Rebuilt Axial Piston Pumps{5070}
1985/05/27 Remanufactured Bare Cylinder Heads (U.S. And Canada){1101,7754}
1985/05/27 Identification Of Track Motor Universal Joint Assemblies{3251,3201,5058}
1985/05/27 Low Charge Indicator Added To Rear Suspension Cylinders{7213}
1985/05/27 Use Caterpillar 6V50 Engine Timing Indicator For Accurate Readings{0782,0785,0775}
1985/05/27 Obtaining Correct Bolt Torque On Ground Engaging Tools{6800,7553}
1985/05/27 Additional Repair Parts Available For Fire Suppression Actuators{7400,7401}
1985/05/27 Correct Procedure To Check Tapered Bearing End Clearances{7551,3257,3300,3000}
1985/06/03 New Line Relief Valves Have Higher Leak Pressures And Less Noise{5453,5463,5464,5550}
1985/06/03 New Spider And Bearing Group And New Bolts Used In Drive Shaft Groups{3251,3253,3250}
1985/06/03 Preventing Skin Irritation From Petroleum Test Fluids{0353}