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Company Cases About Case Study: Troubleshooting BOSCH Diesel Injector 0445110787 (Series 110 1) with Cross Reference Numbers 445110519, 445110520

Case Study: Troubleshooting BOSCH Diesel Injector 0445110787 (Series 110 1) with Cross Reference Numbers 445110519, 445110520

2026-05-08
Latest company cases about Case Study: Troubleshooting BOSCH Diesel Injector 0445110787 (Series 110 1) with Cross Reference Numbers 445110519, 445110520

Case Study: Troubleshooting BOSCH Diesel Injector 0445110787 (Series 110 1) with Cross Reference Numbers 445110519, 445110520

Problem Description

A maintenance team reported issues with their construction equipment fitted with BOSCH diesel injector 0445110787. The equipment experienced hard starting, black smoke, power loss. Further inspection revealed the problem originated from the 110 1 series injectors, which also has cross-reference numbers 445110519 and 445110520 for different engine models.

Issues Identified

· Primary issue: nozzle coking affecting fuel delivery

· Secondary issue: water in fuel

· Secondary issue: incorrect injector timing

Solution Applied

· replace injectors and improve fuel quality

· Clean fuel tank and fuel lines

· Replace fuel filters

· Perform engine compression test

Outcome

After the repair: power restored, fuel efficiency improved. Fleet now maintains inventory of 445110519 and 445110520 as backup units for quick replacement when 0445110787 is temporarily unavailable.

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