Socket and Driver Bit Use

General Torque Guidance

When using sockets or driver bits (Hex / Allen and Torx), always match the tool configuration to the torque requirement of the fastener.

Smaller fasteners generally require lower torque. Larger fasteners require higher torque and a stronger drive interface.

T-Handle Extension Usage

The long, thin T-handle extension is intended for low-torque applications only, such as:

• Body panels
  
• Controls
  
• Small bracket bolts
  
• Light-duty fasteners
  

Avoid using the T-handle extension for high-torque fasteners.

High-Torque Fasteners

For bolts requiring significant torque — such as:

• Brake caliper bolts
  
• Frame bolts
  
• Engine mount bolts
  
• 
  Larger Torx fasteners
  
• Wheel lug bolts (BMW single-sided swingarm models)
  

Use the following configuration:

• 3/8" drive adapter
  
• Optional 5" 3/8" extension (for clearance)
  
• 3/8" to bit adapter (for Torx or Hex bits)
  

This setup ensures torque is transferred through the reinforced 3/8" drive interface rather than the thinner T-handle extension.

Model-Specific Attachments

Depending on your motorcycle model, your Obsidian kit may include:

• One wheel removal attachment
  
• Two wheel removal attachments
  
• No dedicated attachment (if not required for your model)
  

Your kit is configured for your specific motorcycle. Always verify compatibility before service.

Front Wheel Removal Considerations

Motorcycle front axle systems vary widely. Always consult your service manual for your specific model.

Bearing Stack and Tightening Sequence

The front axle clamps together a bearing “stack” consisting of:

• Axle
  
• Wheel hub
  
• Bearings
  
• Spacers
  
• Fork bottoms
  

Improper tightening sequence can cause:

• Fork binding
  
• Misalignment
  
• Premature bearing wear
  

Always follow the manufacturer’s tightening sequence.

Pinch Bolts

Most modern motorcycles use front axle pinch bolts.

Pinch bolt tightening sequence is critical.

Common procedure:

1. Torque the main axle nut or axle bolt.
   
2. Compress forks (if required by manufacturer).
   
3. Torque pinch bolts in specified order.
   

Failure to follow correct procedure can cause fork misalignment.

Axle Rotation During Tightening

If your bike uses a main axle nut:

• The axle may spin freely before torque load is applied.
  
• This is normal before clamping force builds.
  

If rotation occurs:

• Hold the axle head using an appropriate Obsidian wrench
  
• Or apply light holding pressure with the 5" adjustable pliers
  

Once torque builds, rotation will stop.

KTM and Similar Fork Designs

On many KTM and KTM-related models:

• The axle tightens from one side (typically left).
  
• The opposite fork leg is allowed to “float” before pinch bolts are tightened.
  
• The right fork leg is aligned only after axle torque is set.
  

Do not force fork alignment during tightening.

Axle-Bolt Threaded Designs

Some motorcycles tighten from the bolt head side:

• The axle threads into the opposite fork base.
  
• No external nut is present.
  

Confirm which side applies torque before beginning.

Older Designs (Example: First Generation KLR650)

Some older models use:

• Standard hex-head axle bolts
  
• Hex-head axle nuts
  
• Cotter pins for retention
  

If cotter pins are present:

• Replace with new cotter pins after service
  
• Never reuse a bent cotter pin
  

Rear Wheel Removal

Rear axle systems vary between:

• Single-side tightening designs (most modern bikes)
  
• Dual-side bolt-and-nut designs
  

If the axle rotates while tightening:

• Hold the bolt head side until clamping force is applied
  
• Then torque to specification
  

Single-Sided Swingarm Systems (BMW GS Models)

Larger BMW GS models use a single-sided swingarm and shaft drive.

Rear wheel retention uses automotive-style lug bolts.

Common specification:

• T50 Torx lug bolts
  

Because these are high-torque fasteners, use:

• T50 bit
  
• 3/8" to bit adapter
  
• 3/8" 5" extension
  
• Obsidian main drive handle
  

Do not use the thin T-handle extension for wheel lug bolts.

Always torque to BMW factory specifications.

The Obsidian Saw Attachment accepts standard reciprocating saw blades.

Blade Replacement Procedure

1. Remove the Allen-head retention bolt on the blade base.
   
2. Slide out the existing blade.
   
3. Insert any standard reciprocating saw blade.
   
4. Reinstall and secure the retention bolt.
   

This allows you to:

• Replace worn blades
  
• Install metal-cutting blades
  
• Install specialty blades
  

The system is intentionally compatible with widely available reciprocating blades.