End Facing Counterbore Cutter Volvo D13/Mack MP8

This end facing counterbore cutter is designed for cleaning and re‑machining the injector sleeve seat in Volvo D13 and Mack MP8 cylinder heads. Used together with the Counterbore Pilot (PN 416‑6158‑62), Guide Bushing (PN 416‑6158‑32), Driving Arbor (PN 414‑6114‑10), and EA Lube (PN 468‑9910‑08), it removes a small, controlled amount of metal to restore a flat, clean sealing surface for the stainless steel injector sleeve (PN 419‑6681‑05).

End Facing Counterbore Cutter – Volvo D13 / Mack MP8

This end facing counterbore cutter is a precision tool engineered to re‑face the injector sleeve seat in Volvo D13 and Mack MP8 cylinder heads. After the old injector sleeve has been removed and the bore cleaned, the cutter is used to remove pitting, corrosion, and damage from the casting seat so a new stainless steel injector sleeve can seal properly.

Used as part of Irontite’s dedicated Volvo D13 / Mack MP8 injector sleeve system, it helps ensure a consistent, professional‑grade repair.

Engine‑Specific Cutting Tool

• Designed for the injector sleeve seat area in Volvo D13 cylinder heads
• Also fits Mack MP8 series heads that share the same injector bore geometry
• Used with the application‑matched Counterbore Pilot (PN 416‑6158‑62) and Guide Bushing (PN 416‑6158‑32)

The cutting profile and diameter are tailored to these engines, allowing the tool to clean the seat without removing excess material or changing the intended geometry.

How It’s Used in the Procedure

According to Irontite’s Injector Sleeve Removal & Installation Manual (Doc PN 451‑3540‑13), this cutter is used during the “Clean out the injector seat in the casting” step:

1. Set up the cutter and pilot

   • Insert the Counterbore Pilot (PN 416‑6158‑62) into the cutter and tighten the set screw.
   • The pilot can remain installed and only needs replacement if damaged.

2. Add the guide bushing and mount in the driving arbor

   • Slide the Guide Bushing (PN 416‑6158‑32) over the cutter on the end entering the injector bore.
   • Place the cutter (with pilot and bushing) into the Driving Arbor (PN 414‑6114‑10).

3. Install in the injector bore

   • Insert the complete assembly into the injector bore in the cylinder head.
   • The pilot centers in the bore, and the guide bushing stabilizes the cutter.

4. Use cutting fluid

   • Apply EA Lube (PN 468‑9910‑08) generously to the cutter and bore.
   • Keep the area wet while cutting to improve finish and extend tool life.

5. Set the cutting speed

   • Run the machine at approximately 60–80 RPM, adjusting as necessary for smooth cutting and minimal chatter.

6. Control the amount of metal removed

   • The objective is to clean up only the seat area, removing:
     • Minimum: about 0.002”–0.003”
     • Maximum: about 0.005”
   • Stop once pitting and corrosion are gone and the seat is uniform and clean.

7. After cutting

   • Clean the area thoroughly to remove chips and cutting fluid before proceeding with sleeve installation.

Why the Correct Cutter Matters

Using the correct end facing counterbore cutter:

• Restores a flat, true sealing surface for the injector sleeve lower face
• Improves sleeve sealing and reduces the risk of combustion gas, fuel, or coolant leaks
• Prevents over‑machining, which could affect injector height, sleeve support, or head integrity
• Reduces chatter and roughness when used with the specified pilot, bushing, and EA Lube
• Ensures repeatable results on all injector bores in the same head

Improvised cutters or incorrect diameters can leave steps, tapers, or off‑center seats that compromise sleeve and injector performance.

Part of the Volvo D13 / Mack MP8 Professional Kit

This end facing counterbore cutter is included in the Irontite Volvo D13 / Mack MP8 Injector Sleeve Professional Kit (PN 451‑6681‑00), alongside:

• Counterbore Pilot (PN 416‑6158‑62)
• Guide Bushing (PN 416‑6158‑32)
• Driving Arbor (PN 414‑6114‑10)
• Sleeve Removal Tool (PN 445‑6682‑10)
• Tip Expander and Tip Expander Driver (PNs 445‑6681‑21 and 445‑6681‑25)
• Combo Large Brush – Upper Bore/Face (PN 450‑6951‑07)
• Small Tip Bore Brush (PN 450‑6951‑08)
• EA Lube (PN 468‑9910‑08)
• Permatex 64000 High Heat Sleeve Retainer (PN 468‑9640‑00)
• Permatex Anti‑Seize (PN 468‑9771‑34), toolbox, and instructions

It can also be purchased individually as a replacement cutter, which is especially useful for high‑volume shops that perform frequent D13/MP8 sleeve work.

Ideal Users

• Diesel engine rebuilding and machining shops
• Heavy‑duty truck engine service facilities
• Fleet maintenance operations reconditioning Volvo D13 / Mack MP8 heads

Any operation that regularly replaces injector sleeves on these engines will benefit from having the correct, dedicated end facing counterbore cutter.

Key Features

• Engine‑specific end facing counterbore cutter for Volvo D13 / Mack MP8 injector sleeve seats
• Used with Counterbore Pilot (PN 416‑6158‑62), Guide Bushing (PN 416‑6158‑32), and Driving Arbor (PN 414‑6114‑10)
• Removes only a small, controlled amount of metal (approx. 0.002”–0.005”)
• Restores a flat, clean seat surface for stainless sleeves (PN 419‑6681‑05)
• Works best with EA Lube (PN 468‑9910‑08) and low RPM cutting (around 60–80 RPM)
• Included in Irontite’s Volvo D13 / Mack MP8 Injector Sleeve Professional Kit (PN 451‑6681‑00)