1979/09/03 Caterpillar

Quick Disconnect Coupling On Optional Modification Of 5P4150 Nozzle Tester Permits Faster Exchange Of Adapters{0651,1254}

Usage:

A quick-disconnect coupling can be installed on the 5P4150 Nozzle Tester to permit more rapid exchange of nozzle adapters. If you make this modification to your nozzle tester, the 5P4721 Tube must be made shorter.

5P4721 Tube in position.

5P9701 Coupler Assembly.

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NOTICE

The length of tube removed for the capsule-like nozzle adapter must be exactly 66 mm (2.6").

The volume of test fluid in the new parts is the same as in the length of tube removed. The basis of the "Pressure Loss Test" is the volume of fluid in the original system. The length of the tubes for the other adapters is not important.

To install the quick disconnect coupler, follow these instructions and use only the parts given here:

1. For each nozzle adapter, remove 66 mm (2.6") from the short end of a 5P4721 Tube.

2. Remove the burrs from the cut ends and thoroughly clean the tubes.

3. Install a 5P4719 Fitting Assembly and a 5P9715 Nipple on the cut end of each tube. See Special Instructions, Form SEHS7292 "Use of 5P4150 Nozzle Testing Group and 8S2245 Nozzle Cleanup Kit" for correct assembly instructions.

4. Install the adapters on the other end of each tube. Use 3J1905 Sleeves and 3J1906 Nuts (parts of 5P4719 Fittings and 5P4720 Elbows). Use Special Instructions Form SEHS7292 for correct assembly instructions.

5. Remove the original tube assembly and 5P4719 Fitting from the tester.

6. Install a 5P9701 Coupler Assembly.

Caterpillar Information System:

1979/09/03 Follow Recommendations Given In Special Instructions For Modification Of Rollover Protective Structures (ROPS) At All Times{7323,7325}

1979/09/03 Only One Dowel Pin Is Now Used To Hold The Thrust Bearing In The Correct Position{1053,1052}

1979/08/27 New Design Thrust Plate Used In Crankshaft Group{1201,1202,1203}

1979/08/27 New Rocker Arms And Rocker Arm Shaft Have Improved Lubrication{1102}

1979/08/27 Engine Oil Viscosity Changed To SAE 10W/30 For Shipment From All U. S. Factories{1318}

1979/08/27 6V190 Clamp Is Available For Use On Sleeve Metering Fuel Systems{0626,1250}

1979/08/27 Service Kit Is Available For Woodward UG8 Governor{1289}

1979/08/27 Exhaust Manifold And Air Lines Groups Changed To Prevent Exhaust Leakage{1059,1061}

1979/08/27 New Governor Housing Assembly Used In Governor And Fuel Injection Pump Group{1253,1264}

1979/08/27 Why Engines Are Damaged By Fuel Sulfur{1104,1216,1280,1318,1215}

1979/08/20 New Rear Cover And Gasket Used On Water Pump{1361,1350}

1979/08/20 Turbocharger Bearings Are Now Available In More Different Sizes For Better Turbocharger Reconditioning{1053}

1979/09/03 Different Mounting Hole Locations In Ring Gear Plate Assembly And Rotor Assembly For BrakeSaver{1155}

1979/09/10 Insulation Sleeve For 5P7360 Tach Generator Now Available {7462}

1979/09/10 Stronger Bolt Now Used With Exhaust Manifold {1059,1307}

1979/09/10 6V2055 High Vacuum Grease Gives Better Oil Seal {1052,1053,1077,0682}

1979/09/10 Undercarriage Disassembly And Assembly Procedures And Specification Charts Are Available {4150,4159,4154,4171,4180}

1979/09/10 New Gasket Used In Water Lines Group For Aftercooler {1380,1063}

1979/09/10 Different Grease Fitting Now Used In Fan Drive Group {1359}

1979/09/10 Recommendation For Use Of A FLEX-HONE On 1100, 3100 and 3200 Series Engines {1201}

1979/09/10 Tee Handle Hexagonal Wrench In Rack Adjusting Tool Is Now Available For Parts Replacement

1979/09/10 Pin Bore Is Now Offset (Not In The Center) .059" (1.5 mm) In The Piston To Stop Vibration Of The Cylinder Liners Which Can Cause Pitting On The Coolant Side Of The Cylinder Liners {1214,1216}

1979/09/10 Engines Can Use Crankshafts With Either Six Or Eight Counterweights {1202}

1979/09/17 New Main And Connecting Rod Bearings Have A Thicker Layer Of Surface Material{1230,1203,1219}