GEAR (63 & 13 teeth) 8K2685 - Caterpillar

Illustration 1 g01378375
Schematic for the fuel system (1) Fuel filter base (2) Manifold for the fuel pressure sensor on C15 engines (3A) Fuel pressure sensor on C15 engines (If equipped) (3B) Fuel pressure sensor on C13 engines (If equipped) (4) Cylinder head (5) 1034 kPa (150 psi) regulator (6) Fuel temperature sensor (7) Fluid sampling valve (8) Bypass for hand priming pump (9) Optional hand priming pump (10) Secondary fuel filter (11) Air purge screw (12) 517 kPa (75 psi) regulator (13) Fuel enable valve of the Aftertreatment Regeneration Device (ARD) (14) 689 kPa (100 psi) regulator (15) Return check valve (16) Fuel transfer pump (17) 2068 kPa (300 psi) regulator (18) ARD fuel manifold (19) Pilot fuel control solenoid (20) Pilot fuel pressure sensor (21) Manifold for the lines to the ARD (22) Wire mesh filter (23) ARD head (24) Main fuel control solenoid (25) Main fuel pressure sensor (26) Wire mesh filter (27) ARD purge air pump (28) 40 micron filter (29) Check valve (30) Cleaning port (31) Line for the purge air to the ARD head (32) Wire mesh filter (33) Primary fuel filter (34) Fuel tank
Illustration 2 g01377881
Typical example (1) Fuel filter base (10) Secondary fuel filter (16) Fuel transfer pump (35) Electronic unit injector
Illustration 3 g01377896
Fuel filter base on C13 engines (3B) Fuel pressure sensor (5) 1034 kPa (150 psi) regulator (6) Fuel temperature sensor (7) Fluid sampling valve (8) Bypass for hand priming pump (9) Optional hand priming pump (10) Secondary fuel filter (11) Air purge screw (12) 517 kPa (75 psi) regulator (13) ARD fuel enable valve (14) 689 kPa (100 psi) regulator (36) Fuel outlet line to the cylinder head (37) Fuel outlet line to the ARD (38) Fuel supply line from the fuel transfer pump (39) Fuel return line from the cylinder head (40) Fuel outlet port to the fuel tank
Illustration 4 g01445383
Fuel filter base on C15 enginesThe optional hand priming pump is not shown. (5) 1034 kPa (150 psi) regulator (6) Fuel temperature sensor (7) Fluid sampling valve (8) Bypass for hand priming pump (9) (10) Secondary fuel filter (11) Air purge screw (12) 517 kPa (75 psi) regulator (13) ARD fuel enable valve (14) 689 kPa (100 psi) regulator (36) Fuel outlet line to the cylinder head (37) Fuel outlet line to the ARD (38) Fuel supply line from the fuel transfer pump (39) Fuel return line from the cylinder head (40) Fuel outlet port to the fuel tankNote: These engines are required to use Ultra Low Sulfur Diesel (ULSD) diesel fuel. ULSD fuel contains less than 15 ppm sulfur using ASTM D 2622 or DIN 51400. The use of higher sulfur diesel fuel in an engine with a DPF will cause the engine to produce emissions that are not in compliance with emissions standards and deactivation of the catalyst within the DPF. The use of a blend of No.1 and No.2 fuel is allowed in an engine that is equipped with a DPF, if both of the base fuels meet