Broken Glow Plug Tip Removal Kit for M8 and M10 Threads

This comprehensive tool kit is designed for extracting broken glow plug tips from the cylinder head.

The repair can be performed with the cylinder head installed, reducing the time and cost associated with extensive engine disassembly.

Suitable Glow Plug Threads

The set covers the most common glow plug thread dimensions:

• M8×1.0
• M10×1.0
• M10×1.25

Nine different guide adapters ensure that the drills and taps are accurately centred for the corresponding glow plug thread.

Precise Drilling and Extraction

The extra-long drills and taps allow the broken glow plug tip to be drilled and prepared with an internal extraction thread.

Extra-long extraction spindles, ball-bearing extraction adapters and pilot-guided extraction nuts enable the remaining tip to be pulled from the cylinder head in a controlled manner.

Scope of Delivery

• 1 × tap, M3×0.5, length 100 mm
• 1 × tap, M4×0.7, length 100 mm
• 1 × drill, 2.5×120 mm
• 1 × drill, 3.3×140 mm
• 1 × extraction spindle, M3×0.5, length 180 mm
• 2 × extraction spindles, M4×0.7, length 180 mm
• 1 × extraction nut, M3×0.5
• 2 × extraction nuts, M4×0.7
• 1 × extraction adapter for M8×1.0 glow plug threads
• 1 × extraction adapter for M10×1.0 glow plug threads
• 1 × extraction adapter for M10×1.25 glow plug threads
• 3 × guide adapters for M8×1.0 glow plug threads
• 3 × guide adapters for M10×1.0 glow plug threads
• 3 × guide adapters for M10×1.25 glow plug threads
• 1 × storage case

Replacement and Wear Parts

The following parts are available separately and are not included:

• 1 × twist drill, 2.5×120 mm, item no. 113262
• 1 × twist drill, 3.3×140 mm, item no. 113263
• 1 × tap, M3×0.5×100 mm, item no. 113264
• 1 × tap, M4×0.7×100 mm, item no. 113265 / 101919
• 1 × twist drill, 2.5×225 mm, item no. 106494
• 1 × extension for M3×0.5 taps, item no. 106496
• 1 × extraction spindle, M4×0.7×100 mm, item no. 117995
• 1 × extraction spindle, M3×0.5×100 mm, item no. 117996

Removing a Broken Glow Plug Tip

1. Broken Glow Plug Tip

After removing the glow plug body, the broken glow plug tip may remain inside the cylinder head.

2. Drill the Glow Plug Tip

Select the appropriate drill guide and screw it into the glow plug thread.

Carefully drill a centred hole into the broken glow plug tip using the suitable drill bit.

Important: Mark the required drilling depth on the drill bit beforehand to prevent drilling too deeply.

3. Cut the Thread for the Extraction Spindle

Remove the drill guide and cut the appropriate thread into the previously drilled hole.

This thread is used to screw the extraction spindle securely into the broken glow plug tip.

4. Extract the Glow Plug Tip

Screw the extraction adapter with spindle and nut into the prepared thread.

Hold the adapter securely with an open-end wrench and turn the extraction nut clockwise to gradually pull the broken glow plug tip out of the cylinder head.

Tip: Before starting the extraction process, release the tension on the nut and carefully tap the spindle to help loosen the broken tip.

Important: Before installing the new glow plug, thoroughly clean the glow plug bore and remove all remaining debris and contamination.