Drive Gear 212602 For CUMMINS Engine
Description
Technical Parameters
| Part No: | 212602 |
| Part Name: | GEAR,TACHOMETER DRIVE |
| Size: | 2cm*2cm*2cm |
| Weight: | 0.026KG |
| Brand: | Cummins |

Malfunction Phenomena
1. The engine tachometer does not work, the reading jumps, and the values are inaccurate
2. Gear wear and chipping, fine metallic noise in the oil pump area
3. Loss of speed signal, some electronic control systems trigger a speed fault warning
Key Points for Disassembly and Maintenance
1. The gear can only be removed after taking off the external speed sensor of the fuel injection pump;
2. Check for tooth surface wear, chipped teeth, and clearance; if there is damage, replace it directly;
3. When assembling, ensure proper gear meshing alignment to avoid damaging the gear teeth.


Technical Specifications: Engineered to Cummins' Extremes
Part Number : 212602 (REV G, 2025 HT process)
Compatibility : NT855 (400–600 hp / 298–447 kW), KTA19 (700–1,000 hp / 522–746 kW), KTA38 (1,400–2,300 hp / 1,044–1,715 kW)
Rated Torque : 1,200 N·m (885 lbft) continuous / 1,800 N·m (1,327 lbft) peak
Speed Range : 0–2,100 rpm (0–35 Hz)
Dimensions : ⌀128 mm OD × 42 mm width
Weight : 3.8 kg (8.38 lb)
Life Certification : 1,800hour (mining duty cycle equivalent)
Cleanliness : ISO 4406 16/14/12 (preassembly condition)
Part Function
1. Installed on the high-pressure fuel pump housing, relying on gear meshing to transmit the shaft speed;
2. Drives the mechanical speed sensor, providing speed signals to the dashboard tachometer;
3. Belongs to the auxiliary transmission components of the fuel pump governor assembly.

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| Part No: | 212602 |
| Part Name: | GEAR,TACHOMETER DRIVE |
| Size: | 2cm*2cm*2cm |
| Weight: | 0.026KG |
| Brand: | Cummins |
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