174‑1489 27 VDC MOTOR ASSEMBLY for CAT 777D 775E 775D
174‑1489 27 VDC MOTOR ASSEMBLY is a dedicated HVAC blower motor assembly for CAT 777D, 775E and 775D mining off‑highway trucks. This 27‑volt direct‑current double‑shaft motor drives cabin heater and air‑conditioning blower, circulating air for heating and cooling system, also assists refrigerant circulation for air‑condition compressor. Featuring environment‑sealed housing, 2‑pin electrical connector, counter‑clockwise rotation (viewed from lead end), max 10A rated current, 4000 rpm rotating speed and 177W output power, it delivers stable airflow performance for operator cabin under dusty, vibration‑intensive open‑pit mining conditionsCat® Parts...
Drive cabin HVAC blower for heater & air‑condition air circulation
Condition
New, Standard OEM Specification
Origin
China
Warranty
6 months
Applications
Suitable for: Open‑pit mine haulage, quarry bulk‑material transportation, stockyard transfer and other heavy‑duty mine working scenarios for CAT off‑highway trucks, for cabin heating and air‑conditioning system maintenance.
Why Choose Us
Full‑range CAT mine truck cabin spare parts supply
We supply HVAC blower motors, wiper assemblies, cabin electrical components and wearing parts for CAT 777D,775E,775D mine trucks, supporting accurate procurement by OEM part number.
Strict pre‑shipment quality inspection
Each 174‑1489 27VDC motor assembly undergoes electrical performance test, rotation‑speed inspection and sealing check before shipment to adapt to dusty high‑vibration mine cabin environment.
Stock support for cabin HVAC critical components
HVAC blower motor assemblies are key comfort‑related cabin electrical spare parts. We maintain available inventory to respond quickly to urgent on‑site maintenance demands and shorten equipment downtime.
Cost‑effective replacement spare parts
We deliver factory‑direct CAT replacement components for global machinery dealers, repair workshops and mine‑site contractors without extra intermediate costs.
Mature global export service
We serve customers in multiple countries, providing complete export documents, moisture‑proof shock‑resistant packaging and flexible sea‑air transport solutions for cross‑border delivery.
Professional pre‑sales compatibility check
If you are not sure whether this 27VDC motor assembly fits your CAT machine, provide the machine serial number, our team will confirm matching status within 24 hours to prevent wrong‑ordering.
Packaging
Motor electrical connector is protected with dust‑proof cap. The motor assembly is wrapped with shock‑absorbing cushioning material to avoid shaft bending, connector damage and housing scratch in transit. Outer export carton is clearly marked with exact part number for inventory management and customs clearance.
Shipping
Sea freight is available for bulk orders. Air freight can be arranged for urgent repair work. In‑stock items will be shipped within 3‑7 working days after payment confirmation. Complete packing list and export documents will be provided.
FAQ
Q1: How do I confirm this HVAC motor assembly fits my CAT mine truck?
Please send us your machine serial number and model, we will check compatibility for you before placing the order.
Q2: What symptoms mean the 27VDC blower motor needs replacement?
No airflow from cabin heater/AC vents, weak air output, abnormal buzzing/grinding noise, motor intermittent stop‑start are typical failure signs.
Q3: What is your delivery time?
In‑stock goods ship within 3‑7 working days. For out‑of‑stock items, we will confirm the exact lead time before order confirmation.
Q4: What does the warranty cover?
6‑month warranty covers manufacturing defects. Damage caused by improper installation, water ingress, over‑voltage and normal operational wear is not covered.
Q5: How to get a quotation?
Provide the part number, purchase quantity and delivery address, our sales team will send a formal quotation within 24 hours.
Installation Guide
Shut down the mine truck completely and cut off cabin electrical power supply to guarantee operation safety.
Remove cabin interior trim and HVAC housing cover; disconnect the 2‑pin electrical connector from old motor assembly.
Inspect new 174‑1489 motor assembly for shaft bending, housing deformation or connector damage before mounting.
Install new motor into HVAC housing, align shaft position, lock fixing fasteners, plug in 2‑pin wiring connector correctly.
Reassemble cabin trim parts, restore cabin power supply, test heater and air‑condition blower function, check for abnormal noise.
Maintenance Tips
Regularly inspect cabin HVAC filter, keep filter clean to reduce motor load and extend service life.
Prevent water and dust ingress into motor housing; check connector for corrosion and looseness periodically.
Do not run blower motor continuously with blocked air vents, which will cause motor overheating damage.
When replacing this blower motor, inspect matched fan impeller, wiring harness and fuse synchronously; renew worn mating components.
