In this article, we will try to learn the features of this wonderful machine by looking at the images of the 2002 model Caterpillar 992G. The Caterpillar 992G was first introduced by Caterpillar at the mining show in Las Vegas in 1996, and then the following year in 1997, the 992G was officially put into production.
Single Boom Design
Replacing the old 992D, the 992G featured a completely new design and what made it so unique was the one-piece castile box-section front lift arm design that you can see in the image; This replaced the older twin boom design and z-bar linkage found. On the older 992C and 992D models, the new front end has three times the strength of the old design, and stresses from bucket digging cycles are spread along the entire length and perimeter of the box section, resisting bending and preventing stress cracking. The new front-end design also gives the 992G increased reach and dump capabilities, higher breakout force and better operator visibility
Capacity of Caterpillar 992G
Standard bucket capacity for the Caterpillar 992G can range from 15 to 16 cubic yards. Here you can see the two sections of the loader are fixed together and here the articulated steering is a roller on each side to turn the loader left. Right here on the side of the loader frame you can see the plate with the machine’s product identification number and the model bumper, you can see where it says 992G
Steering Hydraulic Reservoir
On the left side of this loader is the steering hydraulic oil tank, which holds 41 gallons of hydraulic oil, which you can see in the image.
Chassis of Caterpillar 992G
The Caterpillar 992G’s chassis is 90 percent robotically welded for greater durability. The new box-section chassis is extended forward, providing better stability and balance for the loader. Now let’s move on to the 992G.
Engine power of Caterpillar 992G
It is powered by a Caterpillar 3508b twin-turbocharged and aftercooled v8 diesel engine that develops 800 horsepower for this machine; The engine features Caterpillar’s advanced diesel engine management system, which controls the fuel injector.
Fuel Capacity / Cooling System
Solonoids to start and stop fuel injection The engine receives its fuel from a 413-gallon diesel fuel tank mounted inside the rear counterweight, and the engine also has a separate post-cooling circuit using Caterpillar’s advanced modular cooling system using a 16-core parallel flow system. To increase the cooling capacity you can see here one of the air filters, the other one is on the opposite side and if you look at the top of the hood you can see the two air intakes and as you can see in the image there is a lot of room at the top.
Application of Hydraulic Reservoir
The first service bay, located on the right side, is for entering and filling the equipment hydraulic oil tank, which contains 85 gallons of hydraulic oil.
Battery / Lubrication
Inside this service bay in the image, this is where the batteries are located and as you can see there are four of them on the 992G, right here is the grease barrel for the central lubrication system.
Hydraulic Pumps
Directly behind the operator station are the two large service hydraulic pumps and the transmission on the loader. Let’s take a look at the image, you can see the two variable and single fixed displacement pumps powering the equipment and steering functions.
Cabin / Controls / VIMS System
Now let’s go inside and check the operator station. In the image you can get a good overview of the inside of the operator’s cab of the Caterpillar 992G The 992G has a vital information management system that monitors the entire loader in operation, at the front you can see the entire operator’s cab indicators and on the floor you can see three foot pedals, In the image you can see the third pedal wheel on the left side The clutch engages the torque converter, which adjusts the amount of rim pull from 100 percent to 20 percent in seconds when you depress the pedal halfway. Half 20 applies rim pull and braking, providing smooth transitions from braking to breakout for fast loading cycles What the prop clutch does is modulates the amount of rim pull sent to the wheels while the torque converter has a standard lock-up clutch for fast loading.
Electro-Hydraulic System / Visibility
The Caterpillar 992G has an electro hydraulic control system this machine uses separate hydraulic circuits for the lift tilt motor fan and steering and braking system the benefits of this are increased hydraulic cooling and eliminate cross contamination compared to the older 992d.
Weight/Result History
The total operating weight of the Caterpillar 992G before 1999 could range from 101 to 104 tonnes by late 1999 following improvements and upgrades to this machine. Today, the total operating weight of the 992G has increased and reached its final form between 103 and 105.6 tons.
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