Excavator vs backhoe control pattern Jun 19, 2008 · removed in and tighten. The differences between the two are in which hands control the boom and stick operation. com/ for shirts and more! Nov 28, 2023 · For safety reasons, always ensure that the excavator is turned off before attempting to switch control patterns. We hope this video was About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright excavator grade control,3d grade control system,excavator machine control systems,excavator grade control system,excavator vs backhoe control pattern,3d excavator grade control systems,3d excavator visual guidance,online support & ota,±3 cm accuracy NAVMOPO GR31 Jan 5, 2011 · Backhoe controls have boom in left hand & dipper on the right. Oct 14, 2011 · I was used to Cat or ISO I believe they are called in my old excavator. Is it as simple as switching hoses at the valve or should I just bite the bullet and force myself to re-learn. Feb 12, 2025 · Think of this like learning to drive in different countries. I just bought a kobeclo and its controls are the other style, Deere like. excavator controls: What's the difference between them? Nov 14, 2022 · The subject of excavator controls in the protocols defines the procedures that a person using heavy equipment, such as a backhoe or an excavator, uses to operate the digging components (such as the swing, boom, stick, and bucket). I was used to the ISO type where the main boom up/down control is on the right hand. Oct 26, 2023 · Nowadays, backhoes and excavators may use the same joystick control pattern, but the overall controls to operate the machine are different. Just follow these steps: Locate the pattern control changer underneath the operator seat. You will see five options: left joystick, right joystick, lever pattern, restore to factory setting and current configuration. There are two control patterns on excavators, pattern A and pattern B. jumping from one machine to another, except that the Deere pattern has to be on a backhoe, and the Cat pattern has to be on an excavator. In addition, because a backhoe has a front loader and wheels, the pedals and controls to drive it are different from an excavator with tracks. ISO (excavator pattern) and SAE (backhoe pattern) are just different "languages" for controlling your machine. When the "D" series came out, they made it easy to change with the valve. After buying my chinese baby-X, I immediately realized the control pattern is opposite to what I have always used. Which is better? I try both and fail miserably on one of them. Jan 31, 2020 · Backhoe Vs Excavator Control Pattern - which do you prefer? For many operators today the thought of using the traditional backhoe cross style control layout is a daunting prospect, but for those of us of a certain age, we grew up with them and as such its not a big deal to jump from one to another. Reason being, the action can be performed with only hand control inputs. I run all Cat equipment at the mine, but when I come home I had to run the ISO (Deere) pattern on my backhoe. Had to run backhoe last year and I felt completely lost. messicks. Lever control uses two side levers that can be pushed forward, backward or side to side to control the backhoe. John Deere controls are left control boom and swing while right control is your dipper and bucket. i thought it might be a good idea to list the location of hand pattern control changers in a central location. Boom, Bucket Stick, Swing Jul 11, 2004 · 05 Kioti CK30HST w/ Prairie Dog backhoe, XN08 mini-X. Dec 14, 2012 · “Most recent innovations – such as excavator-style joystick controls, pattern changer valves and ride control systems – focus more on efficiency, controllability and ergonomics,” says Mar 30, 2019 · https://www. Wikipedia itself even says SAE pattern is left stick is swing and boom, and goes on to say it’s common on CAT equipment. com | Parts Hotline - 877. Best way to swap this on a 580SK - if it has mechanical spools - is to remove the plastic cover over the BH controls & fabricate 2 x linkages to cross the boom & dipper contols - take about an hour. This change of patterns is made by simply moving the control level to either ISO or SAE position. Sep 21, 2007 · I can run both. Feb 24, 2025 · Change the control pattern if it isn’t in the setting you want. I want to stay used to Cat controls, because some big mines and the oil fields prohibit you from switching. Verify the New Pattern: In this episode, we cover what the differences are between the ISO (CAT) and SAE (John Deere) controls on our Komatsu excavator. Dan | 17+ yrs. The first thing on our list of things to do to the excav Regarding productivity, excavators generally excel in large tasks, achieving higher efficiency due to their specialized design and power. Nov 1, 2022 · Mav - 10/31/2022 20:33 The ISO (Cat/Excavator) control pattern seems to make it easier for an operator to lift the front of the tracks and pivot them underneath without any beaming. because I learned on excavator with SAE controlsand a friend told me, just think when your pulling back on the 2 sticks, you are loading the bucket, easy as eating your mommas homemade apple pie. shop and field experience with all major brands of heavy equipment and trucks - 1995 WyoTech graduate. Backhoe vs. But now I've decided to get the 3033R with the 375A bh but wasn't sure if it does work or doesnt. S. When operating an excavator, it is crucial to understand the two main control patterns: ISO and SAE. These patterns determine how the movements of the machine’s sticks correspond to the actions of the Mar 30, 2010 · You don't know what control pattern it can be. Oct 14, 2009 · Cat has a control linkage kit for pretty much all patterns. May 30, 2010 · Thanks for the response guys! We recently acquired a mini-excavator and I am starting to get accustomed it. Feb 15, 2021 · (The guy runs a Deere backhoe next to a Yanmar excavator. getting off one machine and on another May 20, 2011 · Your PC78-6 or PC78-8 should have a pattern control changer as standard equipment. What Is the Difference Between a Backhoe and an Excavator? Jan 16, 2022 · Backhoe Vs Excavator Mode. They did not offer pattern changer intill 2000,01,02. I can mix and match but everytime I get in I have to double check with slow movements before I get into a good pace. Backhoe vs Excavator Controls. Right or wrong I know the SAE pattern. But I can run Deere controls on a backhoe fluently. ISO Controls. ISO vs SAE controls. This was not intended to be a skid Jul 26, 2010 · I'm looking to buy a John Deere 2305 CUT with the 200CX loader and 260 backhoe. Cat controls are left control dipper and swing and right control is boom and bucket. The John Deere and Cat control patterns are most common. ) I asked the same question when I bought an excavator. In this pattern, the right-hand joystick controls the swing and the boom’s up and down movements, while the left-hand joystick controls the bucket’s curl and the arm’s Backhoe vs Excavator Controls. Refer to your operator’s manual for specific instructions on your machine. I have little experience in John Deere's and thought i would pick brains here before looking at it. . Before we start going through the excavator controls, you should know that there's really two different control patterns that you'll find on machines. This question pertains to running an excavator or a backhoe with 2 controls. SAE: Excavator Joystick Control Patterns. Nov 21, 2024 · Backhoes and excavators are two of the most commonly used machines in construction and landscaping. Nov 11, 2005 · I'll touch up a bit here. But cannot get my mind in sync with Deere controls on excavator. ISO controls are generally considered to be an excavator control design and will be more common, while SAE controls are known as backhoe patterns. I called cat yesterday and they said you can not change hoses because the valve presures are different. Nov 15, 2021 · A customer is asking me to come take a look at his John Deere 310SG as he wants to change over the hoe control pattern. Excavator Control Patterns - ISO Controls vs SAE Controls. Mar 31, 2012 · I agree. Similar to the excavator, a backhoe can operate on various terrains, like paved surfaces and soil. and their operator always switches the controls around. It seems that most machines now are switchable, so it doesn't matter which pattern you learn. Put you cylinder hoses back where they were and then trace the pilot hoses from the valve. Have a question/comment? Lea May 16, 2018 · I worked in construction running excavators from 2006-2009. But this is an older bobcat model without the lever, if it had the lever it would say exchange on the machine. May 24, 2006 · The patterns do come from Backoe to Excavator. Edited by Ben in the Basin 4/21/2013 18:08 The first step in learning how to run an excavator is becoming familiar with its controls. 260. com/vendor/kubotaNew Holland Parts - http://www. Understanding Kubota Mini Excavator Control Patterns. Jul 6, 2015 · Hi, my choice is SAE. Jan 19, 2022 · Some places even, they say Deere controls are excavator pattern. Aug 14, 2024 · Using standard control patterns with these features helps operators adjust to different jobs. The JD I ran was the same as Cat (SAE). Simply back out the lock nut, switch the lever to whichever position you want (SAE=Backhoe, ISO= Excavator) and lock down the lock nut. SAE pattern difficulties. Seems kind of funny but now I am used to the SAE pattern (boom on right) in an excavator. Which I’ve always associated CAT with SAE. 3528Kubota Parts - http://www. Backhoes, from 5 to 9 tons, move easily around The most commonly used control pattern throughout the world is the ISO controls. Older excavators often employ control patterns that are different from modern machines. This control pattern is standardised in ISO 10968 Apr 27, 2023 · Can’t run an excavator on Deere controls and can’t run a backhoe anymore from years of running excavators with CAT pattern. Operators can take advantage of automatic stabilizer options. Joined Oct 24 This guide will explore the two different joystick patterns, ISO and SAE, while emphasizing safety and efficiency. SimS Gold Member. Not 3 stick or 4 stick. This makes excavators key for tasks like digging, filling in holes, and clearing land. Look on the display screen for a button to switch the control pattern. One such trend is the desire for pilot controls in backhoes so operators can easily adapt from operating an excavator to a Apr 11, 2024 · ISO vs. Whether you’re digging, backfilling, or operating an attachment that requires secondary hydraulics, you’ll notice that the joysticks, travel control pedals, and attachment controls have been designed to keep you productive all day long. This ultimately makes your work day more productive and enjoyable. I got in a Komatsu with the backhoe pattern and it was pretty bad. Adjust the Control Pattern Switch: Depending on your excavator model, use the designated switch or lever to change the control pattern. 00 worth of manuals when we bought ours, but you should at least get an operators manual. Do I Need an Excavator or a Backhoe? In general, excavators are better suited for heavy-duty May 19, 2023 · When we purchased our Kobelco K907-LCII excavator we knew it was going to need a little bit of work. Cat Control Patterns Aug 14, 2017 · Further, my excavator pattern is currently set differently to my friend's excavator, so one of us isn't running what most others are here What's adding further to the confusion is that the terms ISO and STD seemed to be switched depending on where the person is in the world! Jan 3, 2025 · 4. Nov 26, 2014 · Thanks for the clarification. Jan 27, 2023 · Although newer equipment allows you to switch between different styles and patterns of control, there are still CAT controls (SAE or backhoe) and Deere controls (ISO or excavator controls). While both are designed for digging and earthmoving, the Backhoe vs. Jun 20, 2024 · Learn the key differences between excavators and backhoe loaders to determine which machinery best suits your construction or excavation needs. on all KX-2 models which allows the operator to chose the Kubota ISO (backhoe style) operating control pattern or the SAE (excavator style) pattern. Explaining how the excavator controls work must start from the introduction of two types (patterns) of control systems you can find in Apr 26, 2016 · The popular pilot controls commonly offered in hydraulic excavators have not historically been offered on backhoe loaders. The changer is located in the small compartment door on the left side of the machine just below the cab door. I couldn't get my head around the ISO pattern very easily--so I just changed the pattern to SAE (John Deere or backhoe pattern) and other than learning to drive a tracked vehicle the transition was easy for me. HAWK Excavator is a Manufacturer of Long Reach Excavator Kits, RTK GPS Position Systems, Amphibious Undercarriages and Modular Barges. The control systems of backhoes and excavators are another key area where these machines differ significantly, which in turn affects their usability and efficiency on various construction tasks. :Banghead (Although it's been a while since I was on a Deere pattern hoe, and I've been spending lots of time on Today, we want to look closer at the latter and the operator control patterns and safety tips that will help you enjoy smooth excavator operation. Apparently you have gotten used to the John Deere backhoe control pattern instead of the standard excavator controls. Sep 6, 2021 · Most excavators you can change control patterns but I don't want to do that. I've rent a real tiny mini excavator before and it was on bh controls and I switched it and it worked fine. Apr 7, 2016 · There are load lock valves (anti drift valve) in the boom that are controlled by the pilot signals as willie59 states. How to Change the Control Pattern. The Cat sales man gave (free) us about $500. Understanding Control Patterns. True story… Got sent to run a Deere excavator to dig footings for a hospital addition close to 20 years ago. On the other hand, excavators usually only use levers to control the machine. I expected it would be the more common ISO and I would just change it to SAE or JD or backhoe pattern. Switching the control pattern on any John Deere rental equipment is quick and easy. I learned on Cat, Type 1, ISO and preferred to use that control type. Nowadays, the types of controls normally applied for excavators have been streamlined to ISO and SAE controls. All are easy to install, but they cost more than one would think. Excavators are the other way round. Excavator Control Patterns In this episode, we cover what the differences are between the ISO (CAT) and SAE (John Deere) controls on our Komatsu I have a jd 892elc excavator i want to change the controls to backhoe style can you tell me the lines to change please. Rather than pushing material forward like an excavator, it pulls soil, dirt, gravel, sand or mud toward itself. The International Organization for Standardization (ISO) and the Society of Automotive Engineers (SAE) have established these patterns, each with its own characteristics and applications. Myself I always watch what I'am doing because I'am used to Cat controls so if I'am pulling back on the right hand joystick and I see the the boom isn't rising the stick is moving it Deere controls. I was asking my dealer if it was possible to get "standard" control on the 260 meaning getting the same control I would use if I rented an excavator. Switch the pattern on the excavtor, and I'm all screwed up for about an hour. I think you are correct, it should be easy to swap lines, the only thing I would think might complicate things is lines being too short or too long to route the same way, based on routing the lines when I rebuilt my backhoe. Sep 4, 2018 · John Deere cat control's Oct 4, 2022 · Pilot control only uses buttons to maneuver the machine. excavator grade control,3d grade control system,excavator machine control systems,excavator grade control system,excavator vs backhoe control pattern,3d excavator grade control systems,3d excavator visual guidance,online support & ota,±3 cm accuracy NAVMOPO GR31 SAE Operating Pattern. I can understand why JD kept the BHL pattern as they sold more backhoe loaders than excavators and wanted control familiarity. All the Cats I have ever owned (315CL, 321CLCR, 325DL) and rented have had pattern changers, located on the left hand side of the cab side access doors, behind the cab - except for the 321, it was under the floor mat. It's interesting. Myself I'am used to Cat control pattern you ask me what joystick does what I have troubles remembering its subconcious I grab a hold of the Feb 12, 2010 · That ISO/ASE thing is just another name for backhoe/excavator control pattern right? At work we share some equipment with the utilities dept. Line cranes in the days of big gears, shafts, frictions and brakes generally had the swing in the left hand while working the line drums with levers in your right hand. This is a short video to show where the pattern control change valve is located on a Komatsu PC 170 LC - 10 Hydraulic Track Excavator. A backhoe is a great option when you need a versatile machine for a variety of smaller tasks. Understanding and switching between these patterns is key to being efficient on various job sites. If you are familiar with using a particular control pattern, then it is worth sticking to it to maximise your productivity. Apr 5, 2002 · Kubota provides a T. As mentioned, pattern change valves are common. Some excavators have a button or switch in the cab that makes this change. Learning to operate a Kubota mini excavator means knowing different control patterns. I purchased a '94 Ford/New Holland and that ofcourse is 'backhoe' controls. They're known as ISO controls or SAE controls. I know how to do that, I have a 2004 gehl excavator with that lever. ISO vs. On other excavators, the control pattern lever is in the back near the engine. In the ISO control pattern, the left hand joystick controls Swing (left & right) and the Stick Boom (away & close), and the right hand joystick controls the Main Boom (up & down) and Bucket motions (close & dump). Excavators typically have one of two control patterns — ISO controls and SAE controls. I have a limited amount of time on both, and I must admit that the excavator control movements are not as intuitive as for the back hoe for me. My muscle memory makes the Cat controls come more naturally to me. Today, we are going to tell you about the difference, pros and cons, and also other features of CAT vs Deere controls. When hiring an excavator, understanding whether the machine operates via ISO or SAE controls is essential. What did you buy, Ed? Jul 14, 2009 / Excavator control patterns #10 . It’s ideal for residential landscaping, trenching for utilities, and even some excavation jobs that don’t require deep digging. I don't want to start learning to use this thing and being unable to operate a standard excavator later if I need to. Most guys that are used to running the older backhoes are used to Deere control pattern while most people that have run excavator are used to Cat pattern. As someone who was raised on the Deere pattern (boom on left) my first few times in an excavator were kind of hairy. When I was working construction, we referred to this type as "Cat type" vs "John Deere" or "Type 1" vs "Type 2". Anyone know how big a job to switch the SK60 over to what I am used to? Thanks Apr 8, 2011 · for the standard excavator pattern. Unlock the box using the key provided. I get in and it’s backhoe controls. Which is opposite of what I’ve always thought. My Kubota B670 (American made) uses the top (JD/Backhoe/ISO) control pattern. Apr 29, 2023 · About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright Nov 26, 2019 · It's not as easy as it is to switch some excavator control functions to back hoe style functions. Pilot controls allow operators to quickly and easily switch from a backhoe to an excavator operation pattern, all without having to reconfigure muscle memory. It is a John Deere and I have it set for backhoe control pattern (swing/boom – left hand & bucket/stick – right hand). Apr 21, 2013 · I think Cat is ISO or "excavator" controls and Deere is SAE or "backhoe loader" controls. If the joystick control pattern is changed, the existing control pattern film must be replaced with the correct pattern film. Features can be hydraulically linked beyond the servo control. I have next to no experience on Deere excavators downunder because they are as scarce as hens teeth and am curious as to what Deere controls are? SAE controls (commonly referred to as CAT or backhoe controls) reverse these functions. 222. A quick change of the stick and boom hoses will change the pattern but several people have commented there is a flow restrictor and float position that will be reversed when you do this leading to unsatisfactory results. Two common control patterns are: Excavator Control Pattern (ISO): In this pattern, the left-hand joystick controls the stick and bucket motions, while the right-hand joystick manages the boom and arm movements. Two primary control patterns are prevalent in the industry: ISO (International Standards Organization) and SAE (Society of Automotive Engineers). For at least 20 years, I have Sep 9, 2022 · There's probably threads or videos about this, but in case anyone is interested I just finally got around to changing the control pattern on my Kubota BH65. There is, or was, 4 yes 4, different patterns. CAT pattern makes the must sense to me. Dec 8, 2017 · I run Cat excavators at work, but I just bought a backhoe for my B2620 and it is backhoe control pattern. On back hoes, hoses (and sometimes valves) are switched. Controls also differ by manufacturer and machine. Open the back section and look for a blue or red lever. Knowing the differences between backhoe and excavator controls is key for operators. If you screw up you could be swimming with a 300 Excavator :laugh: Feb 18, 2011 · hey there. To change the Feb 27, 2016 · I know in the newer jd bh you can switch to the excavator or bh pattern. For safety, the pilot control can be disabled. If required, the control systems can be switched between backhoe and excavator patterns to suit all operators. The backhoe’s name is based on how it operates. They have the JD 2-Stick pattern, 4-stick Ford, 3-stick Case with foot swing, and the Excavator pattern. Jan 31, 2020 · Backhoe Vs Excavator Control Pattern - which do you prefer? For many operators today the thought of using the traditional backhoe cross style control layout is a daunting prospect, but for those of us of a certain age, we grew up with them and as such its not a big deal to jump from one to another. “On our Supers you have a choice of Easy Controls (EC) and Advanced Easy Controls Oct 21, 2019 · 800. S. While CAT controls are backhoe pattern. They want everything to stay Cat control so that if someone jumps and the machine and you have it switched they can end up killing someone. i have been helping a large construction company part time because my business is slow and they have a gazillion pieces of equipment. They are commonly referred to as the SAE pattern and the ISO pattern. So this spring I will be figuring out which lines to switch to make my BH65 Cat controls. I don't know what JD's factory pattern is. Mar 1, 2011 · The other most commonly used control pattern is ISO controls, which differs from the SAE control pattern only in that ISO controls exchange the hands that control the boom and the dipper. letsdig18. Select the setting submenu, then the operator settings submenu, and click on operator inputs configuration. Jun 2, 2003 · Ahhhhh, the age old Deere vs. Backhoes, on the other hand, offer flexibility and can operate in areas where a larger machine would be impractical, making them valuable for tasks that require adaptability and precision in tight spaces. Using the monitor and your pattern changer settings, learn how to change back and forth between backhoe and excavator machine operation settings. A backhoe almost always features a boom that can rotate from side-to-side as well as up and down. In contrast, very few excavators feature a side-to-side motion (known as excavators with knuckle-booms). I simply choose that pattern because it is what I thought I would like. SAE: Decoding Excavator Joystick Patterns PC Series - Spool valve to (change or control) joystick operation PATTERN CHANGER INSTALLATION GUIDE SV There are 2 primary joystick patterns commonly used to control excavator functions. John Deere vs. On excavators, a switch is flipped. By exploring control customization options, you can tailor your excavator’s controls to better suit your preferences. ISO pattern is more common worldwide and mirrors natural arm movements, while SAE pattern was developed in North America and feels more natural to experienced backhoe Jan 30, 2023 · The choice between ISO and SAE is a personal one but it can be crucial to be familiar with both. While I can run both, SAE Dec 26, 2014 · Cat controls on excavator. Jan 3, 2013 · NEW BACKHOE "PILOT CONTROL" OPTION The fully adjustable control lever towers (sideways / backwards & forward) ensure a comfortable working position for all types and sizes of operators. When to Use a Backhoe. Excavator debate often arises due to differences in structure, functionality, and best-use scenarios. 3373 | www. We show you how easy Kubota makes it to change the controls on your excavator so all How to operate and switch between I and O settings on an excavator Jul 11, 2007 · Joined Jan 6, 2008 Messages 2,505 Location Western PA Tractor John Deere 5083E MFWD, Kubota L3400 HST Nov 1, 2007 · 1 245592A1 KIT excavator control pattern, purchase from Parts and Components, Includes: Refs. Jun 21, 2023 · 2. However, as technology continues to play a greater role in our day-to-day lives, equipment manufacturers are identifying and catering to new trends. com Setting Your Excavator Joystick Control Functions [00:16] Press the application menu button from the main screen. When you’re renting a compact excavator from Corning Rental of Iowa, this knowledge is indispensable for you and the person operating the machine. Dut due to jobs i do i have to operate what i Aug 28, 2020 · I have a 1026r FILB and I don't like ISO backhoe control pattern. Cat Excavator Pattern Change To Backhoe Pattern (Cat - John Deere Pattern Change) May 20, 2011 · How hard is it to convert 'backhoe' controls to excavator controls? At work I use a John Deere, electric over hydraulic and learned on it in 'excavator' controls. Aug 19, 2009 · Cat controls or John deere The backhoe i"m talking about is a 1999 with wobble sticks . 1-5 1 1 195030A2 ROD dipper, replaces existing boom control , The right hand control lever, which used to control the dipper, now controls the boom and the left hand control lever, which used to control the boom, now controls the dipper Sep 27, 2022 · Everybody calls ISO Cat control pattern, but as far as I know, that pattern predated Cat excavators. Jun 21, 2023 · There are numerous benefits to adjusting the control pattern, such as improved efficiency, increased comfort, and reduced operator fatigue. I know some machine MFGs have a valve or toggle switch to change over Apr 14, 2015 · JCB offers a range of control options, from the manual “wobble stick” control to excavator-type controls. However, if requested by users, the optional backhoe pattern can be obtained by reconnecting the pilot hoses as shown herein. Operator-friendly controls in Bobcat compact (mini) excavators are designed for simplicity, flexibility, and maximum productivity. iso vs sae, deere vs cat controls, backhoe vs excavator. This should give you the tractor-loader-backhoe pattern. Mini excavators come with International control patternsUS excavators usually use SAE controls The backhoe control pattern, also known as the SAE control pattern or the CAT control pattern, is the most common control pattern used in North America and Europe. This Dec 4, 2023 · This innocent looking label is driving me crazy. For your next backhoe, excavator, or mini-excavator rental, use DOZR Marketplace and we will help you find a model with your preferred control pattern! FAQs about SAE vs. Apr 19, 2011 · Did we just go from backhoe loader to talking bout skid steer loaders i prefer iso on backhoe but do find my self changing if i just spent 5 day on the excavator, if you get what i mean and love iso on skidsteer loader *hand control* (posi track asv/terex - bobcat - new holland- cat -takeuchi) etc. Feb 6, 2024 · When it comes to operating heavy machinery like excavators, understanding the control pattern is crucial for efficiency, safety, and comfort. P. Unlike an actual excavator where the entire chassis swivels 360 degrees, the backhoe only allows the seat to swivel around inside the cab. In the United States, SAE controls are the more popular control pattern. Two piney (hillbilly) brothers running the job. And, if not already The benefit of less effort and improved control is in your hands! BIG PERFORMANCE IN A MINI DESIGN Increased lifting, swinging, travel and multi-functioning performance help you get the job done more efficiently, and blade float allows for easy clean up. Feb 28, 2011 · When excavators first came out you would find all kinds of different patterns because there were all kinds of control mediums and most controls were based loosely on crane controls. tadc yeu kzzlzk xinxvo vtkvq aaemsr fvtmhg ieyokwra ksfid uypdvwaq hmu dxfhep cximek ehzt uip