Allstar ALL96402 Valve Lash Wrench User Manual

1. Product Overview

The Allstar Performance ALL96402 Valve Lash Wrench is a specialized tool designed for precise valve lash adjustment in automotive engines, particularly those with stud girdle assemblies. This kit includes a 9/16 inch wrench and integrated 3/16 inch and 7/32 inch Allen keys, providing the necessary components for accurate adjustments. The tool features insulated handles for comfortable and secure grip during use, and is constructed from durable alloy steel with a powder-coated finish.

Figure 1: Allstar ALL96402 Valve Lash Wrench. This image displays the Allstar Performance ALL96402 Valve Lash Wrench. It features a 9/16 inch box-end wrench, along with integrated 3/16 inch and 7/32 inch hex keys (Allen wrenches) for adjusting valve lash. The handles are insulated for user comfort and grip.

2. Safety Information

Always observe the following safety precautions when using this tool:

• Wear appropriate personal protective equipment, including safety glasses, to protect against flying debris.
• Ensure the engine is cool and stable before performing any adjustments.
• Use the correct size tool for the fastener to prevent stripping or damage.
• Do not use the wrench if it is damaged or appears to be compromised.
• Keep hands and clothing clear of moving engine parts.
• Store the tool in a safe, dry place away from children.

3. Setup

The Allstar ALL96402 Valve Lash Wrench is ready for use out of the package. Prior to first use and before each subsequent use, perform a visual inspection:

• Inspect the wrench for any signs of damage, cracks, or deformation.
• Ensure the insulated handles are intact and provide a secure grip.
• Verify that the hex keys are straight and free from wear.

No assembly is required for this tool.

4. Operating Instructions

This valve lash wrench is designed to facilitate the adjustment of valve lash, particularly in engines equipped with stud girdle assemblies. The integrated hex keys allow for simultaneous adjustment of the rocker arm nut and the pushrod, while the 9/16 inch wrench secures the main nut.

General Valve Lash Adjustment Procedure:

1. Consult your engine's service manual for specific valve lash specifications and adjustment procedures.
2. Ensure the engine is at the specified temperature (usually cold) and positioned correctly for the cylinder being adjusted.
3. Place the 9/16 inch box end of the wrench over the rocker arm adjusting nut.
4. Insert the appropriate hex key (3/16 inch or 7/32 inch, depending on your application) into the pushrod adjusting screw.
5. While holding the rocker arm adjusting nut with the 9/16 inch wrench, turn the hex key to adjust the valve lash to the manufacturer's specified clearance.
6. Once the correct lash is achieved, tighten the rocker arm adjusting nut with the 9/16 inch wrench while simultaneously holding the hex key to prevent the pushrod adjusting screw from turning. This locks the adjustment in place.
7. Double-check the valve lash clearance after tightening to ensure it remains within specifications.
8. Repeat the process for all valves as required by your engine's service manual.

The insulated handles provide a comfortable and secure grip, reducing fatigue during extended use.

5. Maintenance

Proper maintenance will extend the life of your Allstar ALL96402 Valve Lash Wrench:

• After each use, wipe the tool clean with a dry cloth to remove any oil, grease, or debris.
• If necessary, use a mild degreaser to clean stubborn grime, then wipe dry immediately.
• Do not use abrasive cleaners or solvents that could damage the finish or insulated handles.
• Store the wrench in a dry environment to prevent rust and corrosion.
• Periodically inspect the tool for wear, especially on the hex key tips and wrench jaws.

6. Troubleshooting

This is a mechanical hand tool with minimal components, so troubleshooting is generally straightforward.

Common Issues and Solutions:

• Tool not fitting the fastener: Ensure you are using the correct size wrench (9/16 inch) and hex key (3/16 inch or 7/32 inch) for your specific application. Refer to your engine's service manual for correct fastener sizes.
• Hex key slipping: This may indicate wear on the hex key or the fastener. Ensure the hex key is fully seated in the fastener. If wear is significant on the tool, replacement may be necessary.
• Wrench slipping: Ensure the 9/16 inch wrench is fully engaged with the nut. Clean any oil or grease from the nut and the wrench jaws to improve grip.
• Difficulty turning: Ensure the fastener is not cross-threaded or seized. Apply appropriate penetrating oil if necessary, and ensure the engine is at the correct temperature for adjustment.

If the tool is visibly damaged, discontinue use and replace it.

7. Specifications

8. Warranty and Support

Specific warranty information for the Allstar ALL96402 Valve Lash Wrench is not provided in this manual. Please refer to the product packaging or the official Allstar Performance website for detailed warranty terms and conditions.

For technical support, product inquiries, or assistance with your Allstar Performance tool, please contact Allstar Performance customer service directly. Contact information can typically be found on their official website or on the product packaging.

When contacting support, please have your product model number (ALL96402) and any relevant purchase information ready.