Marbed 9887 Conical Reamer for Governor Shaft Pin Ø3 mm

The Marbed 9887 is a precision conical reamer engineered for servicing the Ø3 mm governor shaft pin seats in Bosch mechanical diesel pump governors. Ideal for restoring worn or ovalized bores on linkage levers and guide blocks associated with Bosch pins 2 423 202 001 and linkage lever 2 422 120 093. Ensures correct pin fitment and smooth governor operation across multiple 1425600xxx governor cover assemblies.

Key Benefits

• Ensures perfect fitting of Bosch 2 423 202 001 taper pins

• Restores the functional geometry of worn governor linkage bores

• Avoids replacement of expensive linkage levers or governor covers

• Guarantees smooth and accurate governor movement

• Essential tool for consistent diesel pump overhaul quality

Key Features

• Precision-ground conical cutting profile

• Designed specifically for Ø3 mm governor shaft pin seats

• High-strength tool steel construction

• Optimized for manual control and gradual material removal

• Suitable for Bosch diesel pump governor assemblies (1425600xxx series)

Operational Functions

• Re-conditions the bore in linkage levers and guide blocks where the governor shaft pin operates

• Removes ovalization, rust, or tightening caused by wear

• Restores concentricity to ensure proper movement of the mechanical governor

• Prepares the bore for correct insertion of Bosch pin 2 423 202 001, preventing overstress or misalignment

Technical Data

• Tool type: conical reamer

• Application: governor shaft pin bore

• Nominal pin diameter: Ø3 mm

• Compatible pins: Bosch 2 423 202 001 (taper/grooved pin)

• Compatible linkage components: Bosch 2 422 120 093 (linkage lever / accelerator pawl)

• Compatible governor covers: Bosch 1425600xxx series

• Material: high-grade tool steel

• Target area: mechanical governor linkage bore (guide block / linkage lever)

Use Cases

• Overhaul of Bosch mechanical diesel pump governors

• Restoration of linkage levers in truck and industrial diesel engines

• Service operations on governor covers (1425600xxx) used by Iveco, MAN, Volvo, DAF, Nissan and others

• Correction of fitting issues when installing Bosch 2 423 202 001 pins

Kit Contents

• Marbed 9887 Conical Reamer (single tool)