SPRING 2M3967 - Caterpillar

Delta T-Flow Relationship
Piping Design - Flow Relationships
Recommended Coolant VelocitiesJacket Water: 2-8 FT./SEC. (0.6-2.5 M/SEC.)Sea Water: 2-6 FT./SEC. (0.6-1.9 M/SEC.)Maximum Fresh Water Velocities for 3600 EnginesPressurized Lines: 14.8 FT./SEC.) (4.5 M/SEC.) Max.Suction Lines: 4.9 FT./SEC. (1.5 M/SEC.) Max.Pipe Dimensions - Standard Iron Pipe
Resistance of Valves and Fittings to Flow of Fluids
This chart is for illustrative purposes only. Do not attempt to use this for measurement. Refer to Application Installation Guides for full scale measurements.Flow Restriction of Fittings Expressed as Equivalent Feet of Straight Pipe
Strainers:As a general rule of thumb, strainers should be of adequate capacity to create no more than 1.5-2.0 psi (10-14 kPa) of pressure drop under clean strainer conditions at maximum flow.Typical Friction Losses of Water in Pipe - (Old Pipe) (Nominal Pipe Diameter)
Velocity vs Flow
STD. PIPE SIZES 11/2" TO 5" (38.1 to 127 mm)
TUBE SIZES FROM 1" TO 5" O.D. (25.4 mm to 127 mm) (COMMON USAGE WALL THICKNESS)Coolant Chemical and Physical Properties
Minimum Acceptable Water Characteristics for Use in Engine Cooling SystemsBoiling Point of Coolant at Varying Antifreeze Concentrations
Protection Temperatures for Antifreeze Concentrations1
1Ethylene glycol-based antifreeze.Barometric Pressures and Boiling Points of Water at Various Altitudes
Barometric PressureCaterpillar Diesel Engine1 Antifreeze Protection Chart (Fahrenheit)
1Also for use in natural gas enginesCaterpillar Diesel Engine1 Antifreeze Protection Chart (Celsius)
1Also for use in natural gas enginespH Scale for Coolant Mixture
Temperature Regulators
New Temperature Regulators - 1330, 1355; 3606 (8RB), 3608 (6MC), 3612 (9RC), 3616 (1PD) Industrial Engines
The 3600 Family of Engines has three sets of temperature regulators. The regulators are the jacket water (JW) inlet control, the oil cooler and aftercooler (O/C and A/C) inlet control, and the oil cooler oil temperature control. The chart identifies the new and former regulators. The recommended service hours of temperature regulators is every 6000 service meter hours or annually, whichever occurs first.Diagnostic Tooling
Self-Sealing Probe Adapters:Coolant Expansion Rates
As a rule of thumb, expansion tanks should have a capacity of 16% of the total system coolant volume for expansion plus reserve.Densities of Liquids [at 60°F (16°C)]
Supplemental Coolant Additive (Conditioner or Inhibitor)
Caterpillar recommends using antifreeze in the coolant mixture to get maximum life from cooling system components. 30% is minimum recommendation.