Clean Bolt Holes In Cylinder Block Before Cylinder Heads Are Installed{1101,1201}
Usage:
3400 Series Engines in All Applications
Be sure to clean the bolt holes in the cylinder block before the cylinder head is installed. If water, oil or grease are in the holes when the bolts are installed, the fluid compression will cause stress in the bolt holes and can cause cracks in the cylinder block.
Use engine oil on the threads of the bolts for the cylinder head. Do not use a thread lubricant or thread sealant.
Caterpillar Information System:
1977/08/08 New Air Inlet Manifold Has Longer Bolt Bosses With More Thread Depth To Keep Bolts Tight{1058}
1977/08/08 Spacers Added To Alternator Group To Improve The Mounting{1405}
1977/08/08 Larger Boss Used In Cylinder Block So Bolt Hole Will Not Be Drilled Into Coolant Passage{1201,1350}
1977/08/08 New Vickers Pump Design{5055}
1977/08/08 Correct Adjustment Of Fuel Shut-Off Solenoid Shaft Can Prevent Failures{1259}
1977/07/11 New Inserts To Repair Cylinder Liner Seats On D353 Engine Blocks{1201,1216,1217,0663,0653}
1977/07/11 Heat Absorbing Material Aids And Protects Surface Areas Being Welded Or Heated{0680}
1977/07/11 New Component Code List For Use In The Service Information Retrieval System{0331,0374}
1977/07/11 Safety Vent Caps For Caterpillar Batteries{1401}
1977/07/11 New Adjustment Pin And Valve Seal Used In Fuel Ratio Control{1278}
1977/07/11 Baffle Added To Water Pump Cover To Send Coolant In Bypass Line Directly Into The Water Pump{1361}
1977/07/11 Some Earlier Vickers Hydraulic Pump Groups Are Not Available For Parts Service--Some Modification Is Needed To Install Replacement Pump Groups{5055}
1977/08/15 Tools From Caterpillar To Test And Charge Air Conditioners And For Repair Of Frigidaire Compressors{7320,0651}
1977/08/22 New Main And Connecting Rod Bearings Are Made Of Higher Strength Material{1230}
1977/08/22 Tools Now Available To Ream And/Or Hone 0.500" (12.70 mm) Diameter Valve Guides{0663}
1977/08/22 Improved Coolant Seal For Connection Between Cylinder Heads{1100,1350}
1977/08/22 Be Sure To Drain Oil In BrakeSaver At Every Lubricating Oil Change Period{1155,1300}
1977/08/22 Problems With Oil Or Fuel Filters{1261,1318}
1977/08/22 Installation Of Generator Sets On Rigid Bases{4450}
1977/08/29 New Clutch Groups Used In Front Power Take-Offs; Service Kits Available{3055}
1977/08/29 Improved Cylinder Block With Spacer Plates Used With Improved Cylinder Heads And Cylinder Head Gaskets{1101,1201,1221}
1977/08/29 New Tube Assemblies For Turbocharger Oil Lines; New Base Assemblies For Oil Filters{1052,1306,1307}
1977/08/29 Engine Valve Springs Are Now Made Of Stronger Steel{1108}
1977/08/29 Anti-Corrosion And Break-In Coatings{0374,3256}