New Diaphragm Used In Fuel Ratio Control{1278}
Usage:
D348, D349, D353, 3406, 3408 And 3412 Engines In All Applications
Description of Change: A new diaphragm is used in the fuel ratio control groups on the above engines. This new diaphragm is made of a gray silicone material that is stronger and will give better performance.
The former diaphragm was made of a synthetic rubber material. The service life of the former diaphragm was not acceptable.
Adaptable To: The new 1W4797 Diaphragm is a direct replacement for the former 2P8804 Diaphragm. The former diaphragm has been canceled.
Caterpillar Information System:
1982/03/15 More Flexible Hose For Use With Hydraulic Flowmeter{0651,5050}
1982/03/08 Correct Lubrication Procedure Will Prevent Damage To Fan Drive{1359,0374,0375}
1982/03/08 New Adapters And O-Ring Seals Used In Aftercooler Group{1063}
1982/03/08 Heavy Duty Air Cleaner Available, With Precleaner And Automatic Dust Ejector{1051,1055,1061,1062}
1982/03/08 Reconditioning of Bridge Wear Seat Is Permitted; Will Prevent Bridge Replacement When Not Necessary{1100}
1982/03/08 New Double-Wall Fuel Injection Lines Group And Fuel Drain Group Available As Attachments For Protection Against Fuel Leakage{1252,1254,7400}
1982/03/01 New Marine Gear Groups Have New Clutch Plates{3302}
1982/03/01 New Gasket Used In Governor And Fuel Injection Pump Group{1259,1286}
1982/03/01 Brass Plug Used To Prevent Corrosion{3320}
1982/02/22 New Idler Shaft Used In Fuel Transfer Pumps{1256}
1982/02/22 Use 6V6035 Hardness Tester On Crankshafts{0651,1202}
1982/02/22 Engine Storage; Engine Start-Up After Storage{1000}
1982/03/15 Use The 6V6059 Microlite With The 6V2196 Inspection Microscope{0651}
1982/03/15 New Oil Pump Outlet Elbow Is Stronger{3314,3310}
1982/03/22 Carbon Build-Up In Combustion And Inlet Areas{1058,1101,1105,1214,1104}
1982/03/22 Use Correct Torque On Hydraulic Valve Bolts, Nuts And Taperlock Studs{5050}
1982/03/22 Engine Replacement{1000}
1982/03/22 Improved Valve Cover Seal Used{1107}
1982/03/22 Use 5P5195 Fuel Line Wrench Correctly{0612,1252}
1982/03/22 Caterpillar Electric Starting Motors{1453,1407}
1982/03/22 Correct Use Of 6V2023 Flow Check Adapter Group Is Important To Prevent Damage To An Engine{0651,0654,1250}
1982/03/22 Use FT1614 Cover To Protect Center Shaft Assembly{0622,3305,3306,3302,3307}
1982/03/22 Improved Plunger And New Spring Used In Mechanical Shutoff Group{7418}
1982/03/29 Parts Book Changes{0374}