Application: Mercedes-Benz CDi engines. Contents: M8 x 1.0mm Tap, 7 - 8mm step drill, 6mm drill, d...Application: Mercedes-Benz CDi engines. Contents: M8 x 1.0mm Tap, 7 - 8mm step drill, 6mm drill, drill guide, insert fitting tool & 5 threaded inserts. As the task can be performed with minimal dismantling & the cam cover remiaing in place, this tool is a great time saver. Use with appropriate tap wrench - Laser recommends Part No. 6000.
Laser Tools Injector Clamping Bolt Thread Repair Kit - for Mercedes-Benz 6958Free delivery in 1–3 days£138.68Visit shop →
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Product Information
Full details
This Laser 6958 Injector Clamping Bolt Thread Repair Kit is designed for mechanics working on Mercedes-Benz CDi engines. Its key benefit is saving time by allowing repairs with minimal dismantling, keeping the cam cover in place. A potential caveat is the need for a separate, appropriate tap wrench for optimal use. The kit includes a tap, step drill, drill bits, a guide, an insert fitting tool, and threaded inserts for efficient thread repair.
All features
Model Part Number
6958
Brand
Laser
Extended Product Information
FAQs
What engines is this kit designed for?
This kit is specifically designed for Mercedes-Benz CDi engines that use M8 x 1.0mm injector clamping bolts.
Do I need any other tools to use this kit?
Yes, you will need an appropriate tap wrench. Laser recommends Part No. 6000 for optimal results.
Can I use this kit on other vehicles?
While the principle of thread repair is universal, this kit's components (drill sizes, tap size) are specifically for the M8 x 1.0mm thread found on certain Mercedes-Benz CDi engines. Using it on other applications may not yield correct results.
How many inserts are included in the kit?
The kit includes five threaded inserts.
What is the main advantage of using this kit?
The primary advantage is the significant time saved, as it allows for injector clamping bolt thread repair without removing the cam cover, enabling the repair to be performed with minimal dismantling.
How do I ensure the new thread is straight?
The kit includes a drill guide which should be used to maintain accuracy and ensure the drilled hole and subsequent tapped threads are straight and perpendicular to the surface.
What is the thread size of the tap and inserts?
The tap and the included threaded inserts are M8 x 1.0mm.
Troubleshooting
Tap not cutting threads cleanly
Ensure the tap is straight and perpendicular to the hole. Use adequate lubrication. Check if the tap is worn or damaged.
Threaded insert does not seat properly
Verify that the hole was drilled and tapped to the correct specifications. Ensure the insert fitting tool is used correctly and the insert is properly aligned before seating.
Drill bit wandering during drilling
Ensure the drill guide is securely in place and centered over the damaged area before starting to drill. Use a pilot hole if necessary.
Difficulty turning the tap
Apply more cutting fluid or oil. Ensure no debris is obstructing the threads. Use a tap wrench with a comfortable grip and apply steady, even pressure.
Pros and Cons
Pros
Significantly reduces repair time on Mercedes-Benz CDi engines.
Allows repairs without complete cylinder head disassembly.
Provides all necessary tools and consumables in one kit.
High-quality components ensure longevity and effectiveness.
Cost-effective solution compared to extensive engine repairs.
Cons
Requires a separate tap wrench (Laser recommends Part No. 6000).
Primarily designed for specific Mercedes-Benz CDi engine applications.
Requires a degree of mechanical skill for proper use.
Thread inserts are a consumable and may need replenishment.
Setup, Compatibility & Care
Setup:
Identify the damaged injector clamping bolt thread on the Mercedes-Benz CDi engine.
Ensure the cam cover remains in place as per the kit's design.
Select the appropriate drill bit (7-8mm step drill or 6mm drill) based on the damage and insert size.
Use the drill guide to ensure a straight hole.
Carefully drill out the damaged threads.
Use the M8 x 1.0mm tap to cut new threads in the prepared hole. Use a suitable tap wrench (e.g., Laser Part No. 6000) for this step.
Screw a new threaded insert onto the insert fitting tool.
Insert the threaded insert into the tapped hole and use the tool to firmly seat it.
Compatibility:
Primarily designed for Mercedes-Benz CDi engines with M8 x 1.0mm injector clamping bolt threads.
Care:
Clean all components thoroughly after each use to remove debris and oil.
Store the kit in its original case to prevent loss or damage to parts.
Inspect the tap and drill bits for wear or damage before each use.