Iveco/FPT — Passage from 50 Hz to 60 Hz (NEF motors with Stanadyne pump)
Adjustments · Stanadyne injection pump
From a Iveco/FPT service manual covering: N45, N67, NEF45 SM2. Check it applies to your exact model before use.
Applies to: Iveco/FPT N45, Iveco/FPT N67, Iveco/FPT NEF45 SM2
Before you start
- Do not force the droop setting screw beyond its final position to avoid damaging the adjustment system.
Procedure
- Identify the injection pump code from the Stanadyne tag.
- Act on the droop setting adjustment screw rotating it clockwise the number of rotations from the chart.
- Start the motor and loosen the maximum regime adjustment screw; accelerate to obtain 62 Hz (1860 rpm) no-load speed.
- Regulate the minimum regime screw to block the accelerator lever in the newly obtained position.
- Block both adjustment screws with lock nuts (3.5 ÷ 4 Nm).
Specs & values
- Droop setting screw rotations from chart (e.g. DB 4429-5945: 3 turns from 50 Hz to 60 Hz)
Source: Iveco/FPT service manual. Steps and values are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.