ECMs (3 on the tractor, 2 on rear-powered scrapers) offer:
Better fuel economy by optimizing engine settings
Greater reliability with operator warnings if problems arise
Combining tractor and rear powered-scraper monitoring systems, easy access diagnostics, more durable components improves serviceability
Reduced exhaust smoke by optimizing the fuel/air ratio during cranking, starting and acceleration
Air filter restriction indicator alerts operator if filter exceeds allowable limit
Periodically raises engine rpm during low idle to keep the batteries fully charged
Combined Electronic Monitoring System (EMS III)
Monitors both the tractor and scraper status on the 657G; access fault codes from one location. The tractor and powered scraper use the same controller for parts commonality and easier servicing.
Product Link Ready
This wireless system lets the customer track location, service meter hours and machine health information. Can also issue alerts if the machine is operated beyond owner defined time and location limits.
Easy Access Diagnostics Means Faster Problem Solving
Diagnostic codes, via the Electronic Technician (Cat ET), and a radio call can often let the service technician know which tools, manuals, and possibly even replacement parts to bring.
The electronically actuated cushion hitch has a parallelogram-type linkage for exceptional strength. Vertically mounted hydraulic cylinder transfers road shocks to nitrogen accumulators. Nitrogen accumulator absorbs and dampens road shocks, thus preventing these loads from being transmitted to the operator.
controlled oil flow dampens rebound oscillation
leveling valve applies pressure via an orifice to automatically center piston in the load cylinder
steel castings are used to eliminate many welded joints and increase strength
double-kingbolt design withstands high external forces and simplifies installation and removal
An operator-selectable lockout switch, located on the joystick, locks the cushion hitch down for improved cutting edge control when loading or dumping.
Excellent productivity, improved draft arm protection, and better load retention. Low profile design offers less resistance to incoming materials, while cellular construction adds strength and dent resistance to bowl sides and floor.
Bulldozer Ejection System
Combines constant spreading control with minimum carryback.
An available overflow guard on the scraper bowl helps retain material, and limits spills onto the rear of the scraper.
Where material types include rocky/abrasive material, or become traction-limited, push loading a 657G with a Cat D10 or D11 will optimize tire wear and productivity.
Cutting Edges and Cat Ground Engaging Tools (GET)
May be adjusted according to job conditions. Smooth and serrated cutting edges with available tip options can be applied to match job site conditions. For most efficient loading, use the thinnest cutting edge that provides satisfactory wear life and impact resistance.
Tandem engine machines improve cycle times on grades and in slippery underfoot conditions. Also improves the machine's loading characteristics in tough materials like clay.
Well suited to handle a wide variety of material from clay to shot rock.
Push-pull applies the power of four engines to a single cutting edge. The benefit is realized in tough-to-load material and fast loading of both machines. Push-pull applications have the potential to produce the lowest cost per unit volume, and a high rate of production.
Hydraulically Actuated Bail
The push-pull arrangement uses a hydraulically actuated bail and cushioned plate to push, and a hook that is attached to the rear of the scraper to pull.
Maintenance/service points grouped on the right side
Grouping fluid fill and check points, filters and sampling ports shortens maintenance times
Electronic Monitoring System (EMS) provides real-time information to the operator of system warnings
Electronic Technician (Cat ET) displays real-time system data to better inform the service technician
Implement Valve Relocation
The implement valve is relocated from the tractor to the top of the scraper draft tube, reducing the number of hoses and tubes crossing over the gooseneck. This reduces potential leak points and improves service access.
Scraper Electrical Harness and One Piece Power Block
The flexible ribbon wiring harness oscillates with the machine, and polyurethane boots offer better protection against the elements. The jumpstart receptacle and disconnect switch are integrated into a one-piece power block, with a lockable cover, for better electrical integrity and serviceability.
Electro-Hydraulic Implement Control Simplifies Serviceability
Removing the cab pilot valve and associated lines improves reliability and reduces noise. The high efficiency electro-hydraulic pilot oil filter provides cleaner oil for the pilot system.
You will find nearly all parts at your dealer parts counter. Cat dealers use a world-wide computer network to find in-stock parts to minimize machine down time. Save money with genuine Cat Reman parts. You receive the same warranty and reliability as new products at substantial cost savings.
Better operating techniques can help maximize your machine investment. Cat dealers have resources to help you increase productivity, and Caterpillar offers certified operator training classes on most machines.
Compare machines under consideration before purchase. Cat dealers can estimate component life, preventive maintenance cost, and the true cost of lost production.
Consider the financing options available as well as day-to-day operating costs. Look at dealer services that can be included in the cost of the machine to yield lower equipment owning and operating costs over time.
Talk to your dealer about the range of available maintenance services like S·O·SSM Analysis and Coolant Sampling. Repair option programs guarantee the cost of repairs up front.
Customer Support Agreements
Cat dealers offer a variety of product support agreements that can meet customers' specific needs. These plans can cover the entire machine, including attachments, to help protect your investment.
Repair, rebuild or replace? Your Cat dealer can help you evaluate the cost involved so you can make the right choice.