1981/10/05 Caterpillar

Bolt Torque Specifications Changed For Crankshaft Pulley And Power Take-Off Adapter{1205,1165}

Usage:

All 3208 Engines With Front Power Take-Off Adapter

SUPPLEMENT: 01/11/82

SERVICE MAGAZINE, OCTOBER 5, 1981, PAGE 5. In the last supplement on Page 5, the part number for the plated bolt is not correct. The correct part number is 5P4135 Bolt.

--------------- END SUPPLEMENT ---------------

A change has been made to the bolt torque specifications for the front crankshaft pulley and front power take-off adapter on 3208 Engines with 130 to 157 kW (175 to 210 hp). These engines when used in special applications where a front power take-off is used must have a strong pulley to crankshaft junction. The increased bolt torque will make this junction stronger.

The new torque specification for the crankshaft pulley bolt is 950 + 50 N·m (700 + 37 lb ft). The new torque specification for the bolts that fasten the power take-off adapter to the crankshaft pulley is 55 + 7 N·m (40 + 5 lb ft).

Caterpillar Information System:

1981/10/05 New Piston Ring Group For Parts Service In Natural Gas Applications{1215}

1981/10/05 New Torque Specifications For Flared And O-Ring Fittings{5057,7553}

1981/10/05 Hydraulic Cylinder Repair Stands And Kits Now Available From Caterpillar Parts Department{0623,0626}

1981/10/05 Service Manual Information About Inside Diameters Of Valve Guides{1104,0374}

1981/09/28 Wrong Assembly Or Adjustment Of Governor Linkage Can Cause Failure{1289,1264,1265}

1981/09/28 Oil Pan Drain Plug Has More Threads{1302}

1981/09/21 Lubricant Gives Protection To Camshaft And Roller During Initial Start-Up{1210,1209}

1981/09/21 Use Only EPA-Approved Rack And Idle Setting; Change Seal, Date Plate{1257,1251,1264}

1981/09/21 New Dual Speed Switch Is Now Available{7418,7410,7411,1400}

1981/09/21 Preventive Maintenance For Natural Gas Engine Spark Ignition System{1550,1552,1555,1558}

1981/09/14 Spring Pins No Longer Used In Water Pump Drive Gear {1361}

1981/09/14 Low Idle Instability: New Low Idle Setting {1264}

1981/10/12 New Cylinder Block Permits Use Of A Small-Frame Turbocharger{1201,1052}

1981/10/12 Use Of Engine Supports On Flywheel Housing Can Change Face And Bore Runout Measurements{1157}

1981/10/12 Engine Slobbering; New Piston And Rings Used{1214,1215,1000,1225,1104,1052}

1981/10/12 FT1561 Cylinder Liner Storage Cabinet{0632}

1981/10/19 FT1565 Valve Guide Removal And Installation Tool{0623,0624,1104}

1981/10/19 Use Shorter Lubrication Periods Under Severe Operating Conditions{7500}

1981/10/19 Wrong Fuel Setting Information Given In Microfiche{0374,1251,1264,1257}

1981/10/19 New Washers Make A Better Seal In Aftercooler Water Pumps{1363}

1981/10/19 Reference Chart For Major Production Changes On 3208 Engines{0374,0375,1000}

1981/10/26 Improved Head Gasket Has Larger Fire Ring To Decrease Fretting {1101,1201}

1981/10/26 "Athena" Supports HBM's Field Servicemen {0374}

1981/10/26 Fuel Shutoff Solenoid Seals Better {1259,1286}