1980/01/28 Caterpillar

Installation Procedures For 5N5880 Remote Shut-Off Group And 5N6336 Oil Pressure Indicator Gauge Group{7418,7403,7455}


D379, D398 And D399 Industrial Engines Equipped With Hydramechanical Shut-Offs

The 5N5880 Remote Shut-Off Group and 5N6336 Oil Pressure Indicator Gauge Group are available for use on D379, D398 and D399 Industrial Engines equipped with hydramechanical shut-offs.

The information which follows gives removal and installation procedures for these groups.

5N5880 Remote Shut-Off Group

First, remove the valve assembly which is made of the 9K6765 Knob, 6F612 Nut, 7L6597 Seal, 5N4725 Adapter, 4J4506 or 5N6096 Spring and 5N4724 Valve. To do this, loosen the 5N4725 Adapter, shown in Illustrations 1 and 2, and remove the parts.

Illustration 1. Location of 5N4725 Adapter, 321268 Elbow and hose on control shut-off group.

Illustration 2. Location of parts to be removed before installation of 5N5880 Remote Shut-Off Group.

Assemble the 5N5880 Remote Shut-Off Group (9K6765 Knob, 6F612 Nut, 5N7408 Cylinder and 7L2224 Seal). (See Illustration 3.)

Illustration 3. Location of parts for assembly of later 5N5880 Remote Shut-Off Groups.

NOTE: Some earlier remote shut-off groups have a 5N5878 Valve, 5N5879 Cylinder and 6F612 Nut which must be assembled. The distance between the end of the cylinder and the end of the valve spool must be 73.3 ± 0.5 mm (2.886 ± .020"). (See Illustration 4.) If an adjustment needs to be made, loosen the 6F612 Nut and turn the valve to get the correct dimension. Then tighten the nut.

Illustration 4. Location of parts and dimensions for assembly of earlier 5N5880 Remote Shut-Off Groups.

Install the 5N5880 Remote Shut-Off Group in the location from where the original valve was removed. Be sure the 5M6214 Plug is in a position that has good access. Remove the 5M6214 Plug and install the necessary fittings to connect the remote shut-off hose in this port.

5N6336 Oil Pressure Indicator Gauge Group

Remove the 321268 Elbow from both the valve group and the hose which goes to the fuel rack shut-off. (See Illustration 1.) Then, install the 2D7325 Tee, which is part of the gauge group, in place of the elbow as shown in Illustration 5. Install the 8N5211 Indicator and the 321267 Connector on the tee and use the connector to install the hose on the tee as per Illustration 5.

Illustration 5. Location of parts for installation and assembly of 5N6336 Oil Pressure Indicator Gauge Group.

Caterpillar Information System:

1980/01/28 New 6V199 Socket For Use On Fasteners In Areas With Limited Clearance{0612}
1980/01/21 New Fuel Injection Nozzle Assembly Used{1254}
1980/01/21 Extended Shafts Now Available For Front Power Takeoff Units{3055}
1980/01/21 Cooling System Improvements Prevent Expansion Tank Leakage{1354,1380,1153}
1980/01/21 New Piston Groups Have The Piston Pin Bore Off-Center, Away From The Thrust Side Of The Piston{1214}
1980/01/21 A Spring With A Lower Rate Is Now Used In The Fuel Filter Group To Give Less Fuel Pressure{1261}
1980/01/14 New Raw Water Engine Oil Cooler Is Used{1378}
1980/01/14 Use The FT1481 Bracket To Hold The 1P2371 Micrometer In Position During Bore Size Measurement{0655,0663}
1980/01/07 Improved Ring Seal Used At Rear Of Crankshaft {1161}
1980/01/07 8N1831 Fuel Nozzle Assembly Now Approved For Use In 1693 Truck Engine; Chart For Applications Of 8N1831 And 7N5005 Fuel Nozzle Assemblies {1254}
1980/01/07 Important: XT3 And XT5 Hose Assemblies Must Be Fabricated And Installed Correctly For Maximum Service Life {5057}
1980/01/07 New Exhaust Valve For Special Engine Applications {1104,1105}
1980/01/28 New Attachment Air Compressor Group and Lines Groups Have Improved Design{1065}
1980/01/28 Oil Drain Hole Added To Spacer Plate Cylinder Block To Permit Use Of Scroll Fuel System{1201,1221}
1980/02/04 New Cylinder Liner Has Improved Design To Keep Liner Temperatures Lower{1216}
1980/02/04 Change To Gear On Accessory Drive Shaft Assembly Gives Longer Service Life{1207,1206}
1980/02/04 Real Value Available Through Caterpillar Remanufacturing Programs{0374}
1980/02/11 Warning: Avoid Use Of Fuel Mixtures Of High Volatility. If You Are Exposed To Such Mixtures, Be Aware Of The Hazards Involved And Take Proper Precautions{1280}
1980/02/11 Use The Correct Water Temperature Contactor{1350,1100}
1980/02/25 How To Check Operation Of Hydramechanical Shutoffs On D379B, D398B, D399 Engines{7418}
1980/02/25 Revision Of Special Instruction Form No. SMHS7267, "Use Of 5P8709 Tool Group For Alignment Of Piston Cooling Jets" Has Important Changes{1307}
1980/02/25 Stronger Braces Used Between Air Cleaner And Engine{1051}
1980/02/25 Plunger Movement Must Be Adjusted When New Rack Shut-Off Solenoid Is Installed{1259}
1980/02/25 Drawings Available For Six Tools Used During Repairs Of Damaged Pin Bores In Two-Piece Booms{6501,0665}
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