Jeep Cherokee 1974-1983 HVAC Specifications
Explore detailed HVAC specifications for the 1974-1983 Jeep Cherokee. Learn about heating, ventilation, and air conditioning systems, components, and maintenance tips. Essential for owners and mechanics.
Overview Specifications
This document provides detailed HVAC specifications for the 1974-1983 Jeep Cherokee. It includes information on the heating, ventilation, and air conditioning systems, as well as guidance on how to locate and use this information effectively. Whether you are a mechanic, restorer, or enthusiast, this guide will help you understand the HVAC components and their functionality.
How to Use
Use the search functionality to find specific HVAC terms or components. Enter keywords like 'blower motor' or 'heater core' to quickly locate relevant sections.
Navigate through the document using the section titles and subsections. Click on a section to expand it and view detailed information about each HVAC component.
Key Specifications
Blower Motor Voltage
12V
Refrigerant Type
R-12
Heater Core Material
Aluminum/Copper
Compressor Drive
Belt-Driven
Vent Control Type
Manual
Available Specifications
Heating System
This section covers the heating system components of the 1974-1983 Jeep Cherokee, including the heater core, blower motor, and control mechanisms. Learn how these parts work together to provide cabin warmth.
Heating System
This section covers the heating system components of the 1974-1983 Jeep Cherokee, including the heater core, blower motor, and control mechanisms. Learn how these parts work together to provide cabin warmth.
Heater Core
- Located inside the HVAC housing
- Made of aluminum or copper for efficient heat transfer
- Connected to the engine's cooling system
- Requires periodic flushing to prevent clogging
Blower Motor
- Mounted on the HVAC housing
- Operates at multiple speeds for adjustable airflow
- Powered by a 12V electrical system
- Can be accessed for replacement without removing the dashboard
Air Conditioning System
Explore the air conditioning system of the Jeep Cherokee, including the compressor, condenser, and evaporator. Understand how these components deliver cool air to the cabin.
Air Conditioning System
Explore the air conditioning system of the Jeep Cherokee, including the compressor, condenser, and evaporator. Understand how these components deliver cool air to the cabin.
Compressor
- Belt-driven by the engine
- Uses R-12 refrigerant (Freon)
- Features a magnetic clutch for engagement
- Requires regular maintenance to ensure efficiency
Condenser
- Mounted in front of the radiator
- Dissipates heat from the refrigerant
- Made of aluminum for durability
- Prone to damage from road debris
Ventilation System
This section details the ventilation system, including the air ducts, vents, and controls. Understand how air is circulated and distributed throughout the cabin.
Ventilation System
This section details the ventilation system, including the air ducts, vents, and controls. Understand how air is circulated and distributed throughout the cabin.
Air Ducts
- Made of durable plastic or rubber
- Routed through the dashboard and floor
- Designed to minimize airflow resistance
- Can develop leaks over time
Vents and Controls
- Adjustable vents for directional airflow
- Manual control knobs for temperature and fan speed
- Simple and reliable mechanical design
- Easy to repair or replace if damaged
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Component Specifications
Overview
- Type
- Manual climate control
- Configuration
- Single-zone
- Platform
- Jeep Cherokee SJ
- Material
- Steel and plastic
- Location
- Dashboard center
Dimensions
- Unit Width
- 12 inches / 30.48 cm
- Unit Height
- 6 inches / 15.24 cm
- Unit Depth
- 8 inches / 20.32 cm
- Vent Diameter
- 3 inches / 7.62 cm
- Blower Motor Size
- 5 inches / 12.7 cm
- Heater Core Width
- 10 inches / 25.4 cm
- Heater Core Height
- 8 inches / 20.32 cm
Materials
- Housing
- Galvanized steel
- Vents
- ABS plastic
- Blower Motor
- Copper windings, steel casing
- Heater Core
- Aluminum and copper
- Control Knobs
- Thermoplastic
Features
- Heating
-
- Adjustable temperature control
- Heater core with antifreeze circulation
- Defrost function
- Ventilation
-
- Adjustable vent direction
- Two-speed blower motor
- Cabin air recirculation
- Controls
-
- Manual temperature knob
- Fan speed control
- Ventilation mode selector
- Durability
-
- Corrosion-resistant housing
- Sealed blower motor
- Durable plastic components
- installation
-
- Dash-mounted controls
- Under-dash blower unit
- Firewall-mounted heater core
Safety Features
- Overheat Protection
-
- Thermal fuse
- High-temperature cutoff switch
- Electrical Safety
-
- Insulated wiring
- Ground fault protection
- Fire Prevention
-
- Flame-retardant materials
- Heat-resistant ducting
Comfort Features
- Temperature Control
-
- Adjustable heat output
- Gradual temperature adjustment
- Airflow
-
- Directional vents
- Variable fan speeds
- Noise Reduction
-
- Insulated ducting
- Quiet blower motor
- Ergonomics
-
- Easy-to-reach controls
- Intuitive knobs
Accessories
- Upgrades
-
- High-performance blower motor
- Upgraded heater core
- Aftermarket vent covers
- Maintenance Tools
-
- HVAC system cleaner
- Lubricant for blower motor
- Sealant for ducting
- Replacement Parts
-
- Control knobs
- Vent assemblies
- Blower motor
Maintenance
- Service interval
- Every 12 months or 12,000 miles
- Service Items
-
- Inspect blower motor
- Check heater core for leaks
- Clean vents and ducts
- Lubricate blower motor
- Test controls
- Notes
- Regular antifreeze checks are recommended for optimal heater core performance.
Warranty
- Standard
- Years: 1Miles: 12,000Coverage: Parts and labor
- Extended
- Years: 3Miles: 36,000Coverage: Parts only
- Blowermotor
- Years: 2Miles: 24,000Coverage: Replacement
- Heater Core
- Years: 5Miles: 50,000Coverage: Leak repair
- Terms
- Warranty void if improper maintenance or aftermarket modifications are made.
Production Details
- Manufacturer
- Jeep Corporation
- Manufacturing Process
-
- Stamping of steel components
- Injection molding of plastic parts
- Assembly of blower motor
- Testing of heater core
- Quality Control
- inspection: 100% component testingTesting: Pressure and temperature testsCertification: ISO 9001 compliant
- Sustainability
-
- Recyclable materials
- Energy-efficient production
- Waste reduction initiatives
- Production Metrics
- Units Per Day: 500Defect Rate: 0.5%Lead Time: 2 weeks
Service Information for HVAC Service
Maintenance and service requirements specific to the HVAC system
- Inspect blower motor
- Clean vents and ducts
- Check heater core for leaks
- Test control knobs
Use only manufacturer-recommended antifreeze for heater core.
- Lubricate blower motor bearings
- Check electrical connections
- Inspect ducting for cracks
- Test defrost function
Inspect for signs of corrosion in the heater core.
- Replace blower motor if necessary
- Flush heater core
- Replace worn control knobs
- Perform full system test
Major service requires specialized tools and expertise.
Frequently Asked Questions
Find answers to common questions about torque specifications
Q1 What HVAC systems are compatible with 1974-1983 Jeep Cherokee models?
What HVAC systems are compatible with 1974-1983 Jeep Cherokee models?
The 1974-1983 Jeep Cherokee models are compatible with OEM HVAC systems designed specifically for these years. Aftermarket systems from brands like Classic Auto Air or Vintage Air may also fit, but modifications might be needed. Ensure the system supports the Cherokee’s engine size and cabin dimensions. Always verify compatibility with the vehicle’s wiring, ductwork, and mounting points before purchase.
Q2 What maintenance is required for the HVAC system in a 1974-1983 Jeep Cherokee?
What maintenance is required for the HVAC system in a 1974-1983 Jeep Cherokee?
Regular HVAC maintenance includes checking and replacing the cabin air filter, inspecting belts and hoses for wear, and ensuring the refrigerant level is optimal. Clean the evaporator and condenser coils annually to maintain efficiency. Lubricate moving parts and inspect the blower motor for debris. Seasonal checks, especially before summer and winter, are recommended to ensure proper heating and cooling performance.
Q3 How do I install or replace the HVAC system in a 1974-1983 Jeep Cherokee?
How do I install or replace the HVAC system in a 1974-1983 Jeep Cherokee?
To install or replace the HVAC system, first disconnect the battery. Remove the old unit by disconnecting wiring, hoses, and mounting bolts. Install the new system by reversing the removal steps, ensuring all connections are secure. Test the blower motor, heater core, and AC compressor for functionality. Recharge the refrigerant if necessary and check for leaks. Refer to the vehicle’s service manual for detailed instructions.
Q4 How do I troubleshoot HVAC issues in my 1974-1983 Jeep Cherokee?
How do I troubleshoot HVAC issues in my 1974-1983 Jeep Cherokee?
Start by checking fuses and relays for the HVAC system. Inspect the blower motor for functionality and clean or replace it if necessary. Check refrigerant levels and look for leaks in the AC system. Test the thermostat and heater core for proper operation. If issues persist, inspect wiring and connections for damage or corrosion. Consult a professional for complex diagnostics.
Q5 How can I optimize the HVAC performance in my 1974-1983 Jeep Cherokee?
How can I optimize the HVAC performance in my 1974-1983 Jeep Cherokee?
To optimize HVAC performance, ensure the system is free of leaks and fully charged with refrigerant. Clean or replace air filters regularly. Insulate ductwork to prevent heat loss. Upgrade to a high-efficiency blower motor if needed. Use a sunshade to reduce cabin heat during summer. Regular maintenance and timely repairs will keep the system running at peak efficiency.
Factory Service Resources
Access official service manuals, technical documents, and repair guides. These resources provide detailed procedures, specifications, and diagrams directly from the manufacturer.
1974-1983 Jeep Cherokee Service Manual
Coming SoonThis manual provides detailed instructions for HVAC system maintenance, repair, and installation specific to 1974-1983 Jeep Cherokee models.
HVAC System Technical Bulletin for 1974-1983 Jeep Cherokee
Coming SoonThis bulletin outlines common HVAC issues, updates, and solutions for 1974-1983 Jeep Cherokee models.
Jeep Cherokee HVAC Parts Catalog
Coming SoonThis catalog lists OEM and aftermarket HVAC parts compatible with 1974-1983 Jeep Cherokee models.
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Technical Information
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