Visual Inspection Can Detect Chrome Plated Engine Valves{1105}
Usage:
Rebuilt engine valves can sometimes be mistaken for new Caterpillar engine valves. Some engine component rebuilders supply used Caterpillar engine valves that have had their stem diameters built up by a chrome plating process. Close visual inspection of a valve stem near the valve retainer grooves can show an indication of the chrome plating process. This area can have an uneven appearance where the chrome plating ends, see Illustration 1. Valve stems that are not chrome plated will have a smooth appearance as shown in Illustration 2.
Illustration 1. Chrome plated valve stem.
Illustration 2. Valve stem without chrome plating.
Caterpillar Information System:
1985/04/29 Special Pricing On Metric Hand Tools For U.S. And Canada Only{0600,0601,0602}
1985/04/29 Installing New Copper Bonded Bearings Can Extend Engine Life{1230,1203,1219}
1985/04/29 Scarifier Mounting Can Be Modified To Prevent Loosening{6150,6162}
1985/04/22 New Pins Used In Truck Body Group{7258}
1985/04/22 New Duo-Cone Seal Installer Is Available{0600,4051}
1985/04/22 Covers And Tandem Group Changed{4064,4062}
1985/04/22 FT1953 Gauge For Track Assembly{0600,0760}
1985/04/22 Correct Installation Of Oil Sequence Valves{1304}
1985/04/22 New Camshafts Used In SAE Standard [CCW] Rotation Engines{1200,1210}
1985/04/22 New Lamp Group Gives More Uniform Lighting{7300,7309}
1985/04/22 O-Ring Face Seal Fittings Available{5050,5057}
1985/04/22 Replace Grease Relief Fittings During Repair Of Front Suspension Cylinders{7200,7201}
1985/04/29 Snubber Used To Protect Fuel Pressure Switch{1274}
1985/04/29 New Lever Available For Exhaust Piping Group{1061}
1985/05/06 Installation Instructions For New Magnetic Switch{1408}
1985/05/06 New Battery Cable Crimping Die Available{0600}
1985/05/06 New Bearing Housings Available For Turbochargers{1052,1053,1056}
1985/05/06 Folded Core Radiators Used In Cooling Systems{1353,1350,1351}
1985/05/06 System To Find Internal Fuel Leakage{1250}
1985/05/06 New Bolt And Seal For Brake Make-Up Oil Tank{5056}
1985/05/06 Be Sure Correct Piston Rings Are Used On 3400 Series Engines{1215,1214}
1985/05/06 Remanufactured Fuel Ratio Controls Are Available In U.S. And Canada{1278,7754}
1985/05/13 New Piston Seal For 139.7 mm (5.50") Hydraulic Cylinders{5456,5457,5104,5458}
1985/05/13 Hydramechanical Governor Fuel Setting Information{1289,1250}