# 2002 Caterpillar 631G for Sale in Australia, Aus **URL:** ## Listing details - **Price:** Auction pricing - **Listing ID:** 89473459 - **Year:** 2002 - **Manufacturer:** Caterpillar - **Model:** 631G - **Category:** Scrapers - **Type:** Open Bowl Scrapers - **Hours:** 22252 - **Serial number:** CAT0631GEAWK00235 - **Location:** Australia, Aus - **Auction starts:** 2026-11-25 ## Description Enclosed Cab, Air Conditioner, E-Stops, Cushion Hitch, Fast Fuel System, 37.25R35 Tires COMES WITH IRONCLAD ASSURANCE. SUBJECT TO NEW SOUTH WALES SALES TAX. ## Manufacturer specifications ### Bowl - **Heaped Capacity:** 31 cu yd - **Max Depth Of Cut:** 17.2 in (43.69 cm) - **Rated Payload:** 75000 lbs (34019.47 kg) - **Struck Capacity:** 21 cu yd - **Width Of Cut:** 11.6 ft (3.54 m) ### Dimensions - **Axle To Vertical Hitch Pin:** 21.6 in (54.86 cm) - **Front Of Tractor To Front Axle:** 132.25 lb/in - **Ground Clearance - Tractor:** 26.2 lb/in - **Height:** 14.0833 ft (4.29 m) - **Height - Overall Shipping:** 167.75 in (426.08 cm) - **Height - Scraper Blade Maximum:** 21.5 in (54.61 cm) - **Height - Top Of Cab:** 146.25 lb/in - **Height To Top Of Cab:** 12.19 ft (3.72 m) - **Length:** 47.75 ft (14.55 m) - **Length - Overall Machine:** 573.4 in (1456.44 cm) - **Overall Height:** 14.07 ft (4.29 m) - **Overall Length:** 47.78 ft (14.56 m) - **Overall Width:** 12.92 ft (3.94 m) - **Rear Axle - Rear Of Machine:** 95.8 lb/in - **Tractor Ground Clearance:** 2.19 ft (0.67 m) - **Weight:** 102460 lbs (46475.13 kg) - **Wheel Base:** 345.25 lb/in - **Wheelbase:** 28.77 ft (8.77 m) - **Width:** 12.9167 ft (3.94 m) - **Width - Inside Of Bowl:** 134 in (340.36 cm) - **Width - Outside Rear Tires:** 143.2 in (363.73 cm) - **Width - Overall Machine:** 155 lb/in - **Width - Rear Tire Center Lines:** 97 lb/in - **Width - Tractor:** 137 in (347.98 cm) ### Engine - **Tractor Engine:** 3408E ### Hydraulics - **Apron Cylinder Bore:** 8.2 in (20.83 cm) - **Apron Cylinder Stroke:** 28.6 in (72.64 cm) - **Bowl Cylinder Bore:** 7.2 in (18.29 cm) - **Bowl Cylinder Stroke:** 34.4 in (87.38 cm) - **Compensator Settings - Cushion Hitch Circuit:** 2320 psi - **Cushion Hitch Circuit:** 9 gpm (34.07 lpm) - **Ejector Cylinder Bore:** 8.3 in (21.08 cm) - **Ejector Cylinder Stroke:** 74 in (187.96 cm) - **Relief Valve - Implement Circuit:** 2030 psi - **Relief Valve - Steering Circuit:** 1987 psi - **Scraper Circuit:** 91 gpm (344.44 lpm) - **Secondary Steering Circuit:** 77 gpm (291.45 lpm) - **Steering Circuit:** 103 gpm (389.86 lpm) ### Operational - **Alternator Supplied Amperage:** 75 amps - **Cooling System Fluid Capacity:** 32 gal (121.12 l) - **Differential Fluid Capacity:** 36 gal (136.26 l) - **Engine Oil Fluid Capacity:** 11.7 gal (44.28 l) - **Fuel Capacity:** 215.1 gal (814.15 l) - **Hydraulic System Fluid Capacity:** 50.2 gal (190.01 l) - **Operating Voltage:** 24 V - **Tire Size:** 37.50-R35 - **Transmission Fluid Capacity:** 33 gal (124.91 l) - **Wheel Coolant Fluid Capacity - Each:** 19.8 gal (74.94 l) ### Scraper Bowl - **Apron Closure Force:** 38250 lbs (17349.93 kg) - **Apron Opening:** 79 in (200.66 cm) - **Capacity - Struck:** 21 cu yd - **Capacity Heaped:** 34 cu yd - **Cutting Edge Thickness:** 1.7 in (4.32 cm) - **Depth Of Cut - Maximum:** 17.2 lb/in - **Depth Of Spread - Maximum:** 18.9 in (48.01 cm) - **Ground Clearance - Maximum:** 21.5 in (54.61 cm) - **Hyd. Penetration Force - 621g:** 57375 lbs (26024.89 kg) - **Hyd. Penetration Force - 631g:** 57375 lbs (26024.89 kg) - **Rated Load:** 75000 lbs (34019.47 kg) - **Scraper Capacity - Heaped:** 31 cu yd - **Width - Cut - To Router Bits:** 138.3 lb/in ### Service Refill Capacities - Scraper - **Wheel Coolant - Each:** 19.8 gal (74.94 l) ### Service Refill Capacities - Tractor - **Cooling System:** 32 gal (121.12 l) - **Crankcase:** 11.7 gal (44.28 l) - **Differential:** 36 gal (136.26 l) - **Final Drive - Each:** 7 gal (26.5 l) - **Fuel Tank - 631g:** 215.1 gal (814.15 l) - **Hydraulic Reservoir:** 50 gal (189.25 l) - **Transmission:** 33 gal (124.91 l) - **Wheel Coolant - Each:** 19.5 gal (73.81 l) - **Windshield Washer:** 6 gal (22.71 l) ### Standards - **Brakes:** Meets ISO 3450: 1996 standard - **Cab:** Meets ANSI, SAE - **Rops/Fops:** Meets SAE J320a, SAE J1040 MAY 94, and ISO 3471-1994 ### Steering - **Ground-Driven Secondary Steering System:** 51 gpm (193.04 lpm) - **Hydraulic Output:** 96.2 gpm (364.12 lpm) - **Steering Angle - Left:** 85 degrees - **Steering Angle - Right:** 90 degrees - **Width - 180 Degrees Turn:** 40.1 ft (12.22 m) ### Tractor Engine - **Bore:** 5.4 lb/in - **Caterpillar Net Power:** 490 hp (365.4 kw) - **Displacement:** 1099 cu in (18009.42 cu cm) - **Eec 80/1269:** 490 hp (365.4 kw) - **Flywheel Power - Tractor/Scraper:** 373 kW (500 hp) - **Gross Power:** 515 hp (384.04 kw) - **Gross Power - Gears 1-2:** 480 hp (357.94 kw) - **Gross Power - Gears 3-8:** 515 hp (384.04 kw) - **Iso 9249:** 490 hp (365.4 kw) - **Make:** Caterpillar - **Net Power - Gears 1-2:** 450 hp (335.57 kw) - **Net Power - Gears 3-8:** 490 hp (365.4 kw) - **Net Power - Tractor/Scraper:** 336 kW (450 hp) - **Sae J1349:** 490 hp (365.4 kw) - **Stroke:** 6 lb/in ### Transmission - **1 Forward:** 2.9 mph (4.67 kph) - **2 Forward:** 5.2 mph (8.37 kph) - **3 Forward:** 7.4 mph (11.91 kph) - **4 Forward:** 10 mph (16.09 kph) - **5 Forward:** 13.4 mph (21.57 kph) - **6 Forward:** 18.2 mph (29.29 kph) - **7 Forward:** 24.5 mph (39.43 kph) - **8 Forward:** 33.2 mph (53.43 kph) - **Max Speed Forward:** 33.2 mph (53.43 kph) - **Max Speed Reverse:** 6.2 mph (9.98 kph) - **Number Of Forward Gears:** 8 - **Number Of Reverse Gears:** 1 - **Reverse:** 6.2 mile/h - **Top Speed - Loaded:** 33 mph (53.11 kph) - **Transmission Type:** 8-speed automatic Powershift with Electronic Control ### Transmission - 631g - **1 Forward:** 2.9 mph (4.67 kph) - **2 Forward:** 5.2 mph (8.37 kph) - **3 Forward:** 7.4 mph (11.91 kph) - **4 Forward:** 10 mph (16.09 kph) - **5 Forward:** 13.4 mph (21.57 kph) - **6 Forward:** 18.2 mph (29.29 kph) - **7 Forward:** 24.5 mph (39.43 kph) - **8 Forward:** 33.2 mph (53.43 kph) - **Reverse:** 6.2 mph (9.98 kph) ### Weights - **Front Axel - Loaded:** 94054 lbs (42662.23 kg) - **Front Axle - Empty:** 68647.5 % - **Operating Weight:** 102460 lbs (46475.13 kg) - **Rear Axle - Empty:** 33812.3 % - **Rear Axle - Loaded:** 83406 % - **Total Operating - Empty:** 102459.8 lbs (46475.04 kg) - **Total Operating - Loaded:** 177460 lbs (80494.6 kg) ### Weights - Standard, Tandem - **Front Axle:** 68648 lbs (31138.25 kg) - **Front Axle Weight - Loaded:** 94054 lbs (42662.23 kg) - **Rear Axle:** 33812 lbs (15336.88 kg) - **Rear Axle - Weight - Loaded:** 83406 lbs (37832.37 kg) - **Scraper Shipping:** 54004 lbs (24495.83 kg) - **Total Operating - Empty:** 102460 lbs (46475.13 kg) - **Total Operating - Loaded:** 177460 lbs (80494.6 kg) - **Total Shipping:** 100006 lbs (45362.01 kg) - **Tractor Shipping:** 46002 lbs (20866.18 kg) ## About this model The Caterpillar 631G is a wheel tractor-scraper used in large-scale earthmoving, mining, and highway construction applications. It is designed for high-volume material loading, hauling, and spreading over medium to long distances. The 631G features a twin-engine configuration, with a tractor unit and a rear scraper bowl for efficient cut, load, transport, and dump cycles. Caterpillar engineered the model for productivity in mass excavation, site development, and land leveling. Common uses include road building, quarry work, and large civil projects. The 631G is part of Caterpillar's scraper lineup and is recognized for its heavy-duty frame, traction, and material handling capability. ## Photos ![2002 Caterpillar 631G](https://www-ironplanet.s3-us-west-2.amazonaws.com/i/23224/37/55f4d7b7-f526-45bd-a897-7584d1d14937-hr.jpg) ![2002 Caterpillar 631G photo 2](https://www-ironplanet.s3-us-west-2.amazonaws.com/i/23224/37/33eaf73f-401b-464e-81f7-630bc2f16ba3-hr.jpg) ![2002 Caterpillar 631G photo 3](https://www-ironplanet.s3-us-west-2.amazonaws.com/i/23224/37/fe30a26c-e8d9-413c-9686-affcf051f34a-hr.jpg) ![2002 Caterpillar 631G photo 4](https://www-ironplanet.s3-us-west-2.amazonaws.com/i/23224/37/b17d87e3-7022-46de-9a05-8ff3e3956d2e-hr.jpg) ![2002 Caterpillar 631G photo 5](https://www-ironplanet.s3-us-west-2.amazonaws.com/i/23224/37/8ee115a9-4d1c-4289-b786-4fc1c6db3cb0-hr.jpg) ![2002 Caterpillar 631G photo 6](https://www-ironplanet.s3-us-west-2.amazonaws.com/i/23224/37/fdb9a9ff-f4b9-4c49-96b0-0867eb4c821d-hr.jpg) ![2002 Caterpillar 631G photo 7](https://www-ironplanet.s3-us-west-2.amazonaws.com/i/23224/37/d60f6010-ae82-4162-aee3-a6e3a5fcc8c9-hr.jpg) ![2002 Caterpillar 631G photo 8](https://www-ironplanet.s3-us-west-2.amazonaws.com/i/23224/37/050441a4-64e9-4839-9bf7-3c558580c71d-hr.jpg)