SPRING GP-RECOIL 1637165 - Caterpillar

LUBRICATION DIAGRAM OF THE TIMING GEARS
1. Passage. 2. Tube. 3. Passage. 4. Bearing for the idler gear for the camshaft. 5. Passage. 6. Manifold. 7. Rear bearing for the camshaft. 8. Groove. 9. Tube. 10. Gauge for oil pressure. 11. Rear bearing for the camshaft, fuel pump and governor drive shaft. 12. Water pump bearing. 13. Opening. 14. Junction block. 15. Drilled passage. 16. Charging unit rear bearing. 17. Idler gear bearing. 18. Idler gear bearing. 19. Rear main bearing. 20. Bearing for the drive gear for the oil pump.Lubrication for most of the points are from pressure oil in the system. The points not supplied with pressure oil are: bearing (12) for the water pump, bearing (20) for the oil pump drive shaft and the gear driven charging unit rear bearing (16). Lubrication of the bearing (12) for the water pump and bearing (20) for the drive of the oil pump is with oil thrown from other parts.The bearing (16) for the rear of the gear driven changing unit is filled with grease and must be disassembled for refilling.The opening (13) permits oil passage back to the crankcase from the drive housing for the fuel pump and governor drive.Cooling System
The water pump (8) is installed on the right side of the engine on the front face of the timing gear housing. The water pump is gear driven. An extension of the water pump shaft through the timing gear housing makes an auxiliary drive.Water pump inlet pipe (11) is fastened to the radiator or expansion tank outlet. Coolant from the pump (8) goes through the piping to oil cooler (10). On engines equipped with attachments that have heat exchanger type oil cooler for a marine gear, which should use fresh water, there is a connection of the small heat exchanger between the engine oil cooler (10) and the cylinder block (9).The coolant then goes around the cylinder block (9) around the cylinder liners and upward through the cylinder heads (3). Where the water cooled exhaust manifold is used, coolant goes from the cylinder heads to the water cooled exhaust manifolds.The coolant goes forward to the housing for the temperature regulators at the front of the engine.Water temperature regulators, positioned in the housing, control coolant flow to the radiator (5), keel cooling coils (14) or heat exchanger (13) to control the temperature in the cooling system.There is a bypass line (7) from the inlet side of the temperature regulator housing to the inlet side of the water pump at (8). When the temperature of the coolant is not high enough to open the regulators, coolant bypasses the radiator, keel cooling coils or heat exchanger to circulate through engine, for quick warm-ups. None of the coolant goes through the bypass lines when the engine is working full load.
FLOW OF COOLANT IN KEEL COOLING SYSTEM
1. Aftercooler. 2. Water cooled exhaust manifold. 3. Cylinder head. 4. Temperature regulator housing. 6. Expansion tank. 7. Bypass line. 8. Water pump. 9. Cylinder block. 10.