CAT 7R-6776 Air Cleaner Vacuum Valve

Product Overview

The CAT 7R-6776 Air Cleaner Vacuum Valve is a genuine Caterpillar OEM vacuator (dust ejection) valve designed for use in the air intake precleaner system. It automatically expels accumulated dust, dirt, and moisture from the air cleaner housing, helping maintain unrestricted airflow and improving engine protection in harsh operating environments.

Manufactured from durable, flexible rubber to Caterpillar’s OEM specifications, the 7R-6776 Air Cleaner Vacuum Valve provides reliable dust evacuation without requiring manual cleaning. It helps extend air filter service life, improve engine efficiency, and reduce maintenance requirements on construction, mining, industrial, and power generation equipment.

Key Features

• Genuine Caterpillar OEM Air Cleaner Vacuum Valve
• Part Number: 7R-6776
• Vacuator (dust ejection) valve design
• Automatically expels dust and moisture from the air intake precleaner
• Helps maintain unrestricted airflow to the engine
• Flexible heavy-duty rubber construction
• Resistant to heat, oil, dust, and harsh operating environments
• Reduces dust accumulation inside the air cleaner housing
• Helps extend primary air filter service life
• Direct OEM replacement for easy installation
• Factory-engineered for reliable performance and durability

Technical Specifications

Application Information

The CAT 7R-6776 Air Cleaner Vacuum Valve is installed on the air cleaner housing where it continuously removes dust, debris, and moisture collected by the precleaner. As engine vacuum changes during operation, the valve opens automatically to discharge contaminants while preventing unfiltered air from entering the intake system.

This helps maintain:

• Cleaner intake air
• Proper airflow through the air cleaner
• Improved engine performance
• Extended air filter service intervals
• Reduced maintenance requirements
• Enhanced engine protection in dusty operating conditions

Compatible Caterpillar Equipment

The CAT 7R-6776 Air Cleaner Vacuum Valve is used on a wide range of Caterpillar equipment, including:

Off-Highway Trucks

• 770
• 772
• 773GC

Articulated Trucks

• 740
• 740C
• 745
• 745C

Cold Planers

• PM620
• PM622
• PR-450
• PR-450C

Road Reclaimers / Reclaimer Mixers

• RM400
• RM500
• RM500B

Hydraulic Mining Shovels

• 6020
• 6020B

Underground Articulated Trucks

• AD55B

Engines

• C13B Industrial
• C15
• C15 I6
• C18
• C27 Industrial
• C32
• C32B Industrial
• 3408C
• 3512C
• 3516C

Additional Applications

• 740 Ejector Truck
• SPF343C Pumper
• C27 Machine Engine
• C27 & C32 Locomotive Engines

Compatibility should always be verified using the machine Product Identification Number (PIN) or engine serial number before ordering.

Additional Compatibility Information

The 7R-6776 Air Cleaner Vacuum Valve is a configuration-specific air intake component. Before installation, verify:

• Machine model
• Product Identification Number (PIN)
• Engine serial number
• Existing vacuum valve part number
• Air cleaner housing configuration
• Air intake system specifications

Changes to the original machine configuration may affect compatibility. Confirmation through Caterpillar parts information or an authorized Cat dealer is recommended.

Benefits

Installing a genuine CAT 7R-6776 Air Cleaner Vacuum Valve helps:

• Automatically remove dust and moisture from the air cleaner
• Maintain unrestricted airflow to the engine
• Extend air filter service life
• Improve engine efficiency and performance
• Reduce maintenance and cleaning requirements
• Protect the engine from airborne contaminants
• Ensure reliable operation in dusty and demanding environments
• Deliver OEM-quality fit, durability, and long-lasting performance