Nozzel 475 truck , Iran

The pump plunger of the Kangada T44 tractor 475 is a precision component in the fuel injection system of this agricultural machine. The plunger diameter in this tractor ranges from 8 to 9 millimeters with a tolerance below 1.5 microns. The material of this plunger is alloy steel with heat treatment reaching a hardness range of 60 to 64 HRC. The case hardening depth on the surface layer is approximately 0.4 to 0.6 millimeters. The main pump of this tractor is an inline type with 3 or 4 plungers depending on engine configuration. The helix angle on the plunger surface for fuel volume control is precisely designed at 30 to 45 degrees. The number of rack teeth in this pump ranges from 8 to 12 teeth with a module of 2 millimeters. The surface finish of the plunger is ground to 0.05 to 0.1 micron Ra for smooth sliding inside the barrel.

The pump plunger uses both rotary and linear motion to determine fuel delivery to each cylinder. Linear movement of the plunger is controlled by the rack while rotary movement is managed by the control sleeve. The fuel delivery quantity at nominal engine speed of 2200 RPM is approximately 55 to 65 cubic millimeters per stroke. The injection pressure for these pumps is typically set between 120 to 250 bars for standard nozzles. The maximum allowable clearance between the plunger and barrel cylinder after wear is 5 to 7 microns. The injection timing for the 475 tractor engine is set between 15 to 20 degrees before top dead center. An incorrect rack adjustment of just one tooth can increase fuel consumption by up to 20 percent. Plunger testing on a calibration bench requires 50 to 60 bars for proper seat sealing verification. Recommended service intervals for these plungers are every 2000 operating hours of the tractor. Always replace plungers as a complete set with matched barrels for all pump cylinders.You can order and buy Nozzel 475 truck from Iran by contacting us through whatsaap and email.
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