# 2017 Caterpillar 312F for Sale in Piscataway, NJ **URL:** ## Listing details - **Price:** $104,000.00 USD - **Listing ID:** 86771971 - **Year:** 2017 - **Manufacturer:** Caterpillar - **Model:** 312F - **Category:** Excavators - **Type:** Standard Excavators - **Hours:** 3011 - **Serial number:** KMK10021 - **Location:** Piscataway, NJ ## Description Air Conditioner, Auxiliary Hydraulics Pressure, Bucket, Coupler Type - Hydraulic, Fire Extinguisher, Lighting, Radio - AM FM Radio, Thumb Type - Hydraulic ## Machine details ### GENERAL APPEARANCE - **Swing Drive and Gear Secure:** . - **Notes - GENERAL APPEARANCE:** . ### SAFETY ITEMS - **ROPS:** Yes - **ROPS Certification Plate:** Yes - **ROPS:** Yes - **ROPS Certification Plate:** Yes ### OPERATOR STATION - **Current O&MM:** Yes - **Current O&MM:** Yes ### ENGINE - **Blow By:** No - **Knocking:** No - **Oil Leaks:** No - **Water in Oil:** No - **Blow By:** No - **Knocking:** No - **Oil Leaks:** No - **Water in Oil:** No ### COOLING SYSTEM - **Radiator:** Good - **Water Pump:** Good - **Radiator:** Good - **Water Pump:** Good ### ELECTRICAL, STARTING AND CHARGING SYSTEM - **Alternator:** Good - **Lighting:** Good - **Starter:** Good - **Alternator:** Good - **Lighting:** Good - **Starter:** Good ### HYDRAULICS - **Boom Cylinder:** Good - **Bucket Cylinder:** Good - **Control Linkage:** Good - **Hose Lines:** Good - **Hydraulic Swivel:** Good - **Operating Condition - HYDRAULICS:** Good - **Pump Drive:** Good - **Pumps & Valves:** Good - **Stick Cylinder:** Good - **Swing Gear:** Good - **Swing Motors:** Good - **Thumb Cylinder:** Good - **Travel Motors:** Good - **Boom Cylinder:** Good - **Bucket Cylinder:** Good - **Control Linkage:** Good - **Hose Lines:** Good - **Hydraulic Swivel:** Good - **Operating Condition - HYDRAULICS:** Good - **Pump Drive:** Good - **Pumps & Valves:** Good - **Stick Cylinder:** Good - **Swing Gear:** Good - **Swing Motors:** Good - **Thumb Cylinder:** Good - **Travel Motors:** Good ### ATTACHMENTS / WORK TOOLS - **Thumb:** Yes - **Thumb:** Yes ### BOOM - **Boom Condition:** Good - **Boom Pins:** Good - **Pins & Bushings - BOOM:** Good - **Boom Condition:** Good - **Boom Pins:** Good - **Pins & Bushings - BOOM:** Good ### STICK - **Thumb:** 8' - **Stick Length:** 8' ### BUCKET - **Quick Coupler:** Yes - **Quick Coupler:** Yes ### UNDERCARRIAGE - **Pins & Bushings Turned?:** No - **Pins & Bushings Turned?:** No ### COMMENTS, MISC. REPAIRS, GENERAL REMARKS - **Pins & Bushings Turned?:** . - **Pins & Bushings Turned?:** INSPECTED 11/13/25 @ 3011.5 HRS - **comment 1:** . - **comment 2:** INSPECTED 11/13/25 @ 3011.5 HRS ## About this model The Caterpillar 312F is a hydraulic excavator in Caterpillar's 12-ton class, designed for general earthmoving, trenching, utility work, and site preparation. It is powered by a fuel-efficient Cat diesel engine and uses hydraulic systems for digging, lifting, and swing operations. The 312F typically features a compact tail swing design, a reinforced undercarriage, and a comfortable operator cab with integrated controls and monitoring. Common attachments include buckets, thumbs, and hydraulic tools. The Caterpillar 312F is used in construction, landscaping, municipal work, and utility applications where maneuverability, digging performance, and transportability are important. ## Photos ![2017 Caterpillar 312F](http://s7d2.scene7.com/is/image/CatUsedProduction/wtk?JHNyYz1kYjY5MDVjMDZiZGVlOTQ2OTk5OWRlNmVjYWRiOGYxZCYkdHh0PUZPTEVZJTJDJTIwSU5DLiY2MzUwOQ==) ![2017 Caterpillar 312F photo 2](http://s7d2.scene7.com/is/image/CatUsedProduction/wtk?JHNyYz1iMjJhMjZlOWNkZmRkM2Y1Y2NlMjNhNmU5YjExYmYwMiYkdHh0PUZPTEVZJTJDJTIwSU5DLiYzMTYzMQ==) ![2017 Caterpillar 312F photo 3](http://s7d2.scene7.com/is/image/CatUsedProduction/wtk?JHNyYz1jZGEyMDk4NmQ1NjM4NjVmODMyNjVjYWZiZmVmYjhjMSYkdHh0PUZPTEVZJTJDJTIwSU5DLiY0NDUx) ![2017 Caterpillar 312F photo 4](http://s7d2.scene7.com/is/image/CatUsedProduction/wtk?JHNyYz1kN2VjZjljMDY3NjcxMmI5ZjU5MGU1OTAzMGEwMDIxYiYkdHh0PUZPTEVZJTJDJTIwSU5DLiY4NjQ1) ![2017 Caterpillar 312F photo 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