1977/10/31 Caterpillar


With New 5P7448 Adapter, Earlier Fuel Injection Valves And Nozzles Can Be Tested And Adjusted On The 5P4150 Nozzle Testing Group{0651,1254}

Usage:


Early fuel injection valves can now be tested on the 5P4150 Nozzle Testing Group. The 5P7448 Adapter permits fuel nozzles with flat seats and the 1P1795 Master Valves to be connected to the 5P4150 Nozzle Tester Group. Since with this new adapter, all fuel injection valves can be checked with the 5P4150 Nozzle Testing Group, adapters used with the earlier Fuel Injection Test Apparatus will be canceled.

Use the procedure that follows to check leakage on the earlier valves:

NOTE: Use Special Instruction Form FEO11238, "Using the Caterpillar Diesel Fuel Injection Test Apparatus" to clean, check opening pressure, check needle lift specifications and for reconditioning purposes.

1. After the settings for lift and opening pressure are made, use a pressure 100 psi (690 kPa) less than the opening pressure.

2. Close the pump isolator valve and adjust the pressure with the gauge protector valve.

3. During a 30 second period, look for a change in the pressure. The maximum reduction in pressure is 900 psi (6200 kPa).

NOTE: The basis for the leak rate shown above is an estimate. Leak rates for used fuel injection valves are not available.


Typical use of new adapter on 5P4150 Nozzle Testing Group.

Caterpillar Information System:

1977/10/31 New Governor Spring Changes Speed Regulation{1264,1286}
1977/10/31 New Hydraulic Flow Meter Has Many Improvements To Make It Easier, Faster And Safer To Use Than The Former Flow Meter{0651,5050}
1977/10/24 Replacement Bearings Have Aluminum Alloy With More Strength{1203,1213,1230}
1977/10/24 New Piston Group Has Improved Iron Band In The Piston Body{1214}
1977/10/24 Adjust Shop Tire Pressures For Operation In Cold Temperatures{4203,4204}
1977/10/24 Assembly Procedure For The 5P4721 Tube (Part Of The 5P4149 Conversion Group And 5P4150 Nozzle Testing Group){0650}
1977/10/17 Vent Tube Added To Jacket Water Aftercooler{1063}
1977/10/17 Separate Parts Of Oil Pump Cover Now Available{1304,1314}
1977/10/17 Improved Main, Thrust And Connecting Rod Bearings Have Aluminum Alloy With More Strength{1230}
1977/10/17 Preparation Of Truck Engines For Cold Weather Operation{1300,1000}
1977/10/17 Fabricated Extension Prevents Fuel "Splash" During Injection Valve Testing{0650,1254}
1977/10/10 If The Fuel Setting Dimension Is More Than 7.00 MM, Remove The End Play Of The Camshaft To Make The Fuel Setting{1257,1286}
1977/10/31 Some Wobble Is Acceptable In Rubber Vibration Dampers For Crankshafts{1205}
1977/11/07 Crankshaft Support Groups Are Available To Measure Bent Crankshafts{0653,1202}
1977/11/07 Improved Crankshaft Main Bearings And Connecting Rod Bearings With Higher Strength Aluminum Alloy{1203,1219,1230}
1977/11/07 Precision Oil Pump Bearings Now Available{1304}
1977/11/14 New Electric Starting Motor Has Longer Brush Life{1453}
1977/11/14 Exhaust Valves With 30° Face Angle Now Used For Parts Service{1101,1103,1105}
1977/11/14 New Exhaust Manifolds Made Of Stronger Material{1059}
1977/11/21 New Elbow Between Turbocharger And Air Inlet Manifold Has Hole For Ether Starting Aid{1058,1456}
1977/11/21 New Crankshafts Do Not Have Lightening Holes And Lubrication Passages Connected Together{1202,1219}
1977/11/21 Larger Diameter Holes Are Now Used In The Rocker Arm Shaft To Give More Oil Flow To Rocker Arm Bearings{1102}
1977/11/21 Improved Shaft Seal Material Used In All Vane-Type Hydraulic Pumps; Seal Kits Are Canceled{5055}
1977/11/21 New Housing And Impeller Assembly For Water Pump And Drive Group{1361}
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