Cat c4 4 fuel pump timing

Level II - Service personnel who understand the principles of machine system operation, diagnostic equipment, and procedures for testing and adjusting. This presentation provides an introduction and describes the components, systems operation, maintenance, and testing and adjusting procedures for the C4.

This presentation may also be used for self- paced and for self-directed learning. This presentation covers the components, systems operation, and testing and adjusting procedures for the C4. The C4. All the engines use a common rail fuel system. The C6. The common rail fuel system includes an electronically controlled high pressure fuel injection pump, a fuel manifold, and electronically controlled injectors.

The A4-E2 Engine ECM controls the pump solenoid, which controls the injection pump fuel flow through the high pressure pipes to the injectors. NOTE: This presentation can be used to supplement machine training and covers the common engine components on the C4. This presentation may not cover all engine components that may be installed on specific machine applications.

The common rail system reduces combustion noise, and NOx and PM emissions.

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These ACERT engines are being targeted for machine applications where new or upgraded models will meet the latest emissions regulations. These include small and medium:. Many of these machines will be common to the rental market. This illustration shows an overhead view of the C6. Intake valves are actuated by the long rocker arm 1 which presses down the intake valve bridge 2 and unseats the intake valve pair.

Short exhaust rocker arms 3 are used to depress the exhaust valve bridge 4 and open the exhaust valves. The electronic fuel injector 5 is centrally located between the intake and exhaust valve pairs for each cylinder.

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The Engine ECM will control the duration and timing of the fuel injector in relation to sensor inputs to achieve maximum fuel efficiency emissions compliance. A large rubber boot 6 seals the opening in the valve cover base where the high pressure fuel injector supply line passes through the base and connects to the fuel injector.

The cylinder head features a "crossflow" design where the intake air enters the left side of the cylinder head and the exhaust gasses exit the right side through the exhaust manifold 7. This illustration of a C6. These include small and medium excavators. Exhaust valves are actuated by the short rocker arm 1 which presses down the exhaust valve bridge 2 and unseats the exhaust valve pair.

Long intake rocker arms 3 are used to depress the intake valve bridge 4 and open the intake valves. The cylinder head features a "crossflow" design where the intake air enters the right side of the cylinder head and the exhaust gasses exit the left side through the exhaust manifold 7. NOTE: The tertiary third filter not shown is located to rear of the oil dipstick. The oil filter is located remotely from the engine. Contamination control is critical with the common rail fuel system.

Very high pressures require close tolerances in the fuel injection pump and injectors. It is important that technicians pay close attention to cleanliness and contamination control during even the most routine maintenance. Contamination can cause injector failure, high leakoff rates, and pump failure.

Keep workbenches uncluttered and free of debris. Sweep the floors daily and clean up spills immediately. Avoid performing engine maintenance outdoors, especially in windy or dusty conditions.

Keep components in their original packaging until ready to install and inspect packaging to ensure components are still sealed and free of dirt or damage.View local price, availiablity and more.

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cat c4 4 fuel pump timing

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High Pressure C4.4 Fuel Injection Pump 3240532 324-0532 2641A405 for CAT System

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Injector pump replacement.

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To learn more, please visit our Legal Notices - Cookie page. By clicking 'I Accept', you are agreeing to our use of functional, performance and targeting cookies. Need help finding a Cat dealer near you? Our dealer locator provides the most up-to-date information on Cat dealers close to you. Simply enter your address and select the type of equipment you're looking for. Or, if you already know the name of the dealer you're searching for, you can type in the dealer's name for a list of locations.

If you search for vocational trucks elsewhere you will not get any results. These ratings meet U. Industries and applications powered by C4. By clicking "I accept, Continue to Chat", you consent to the use of the cookies that enable the chat function. Internet Explorer users may experience issues with certain features of our site. Please try a current version of an alternate browser i.

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COMMON RAIL C4.4-C6.6 CAT.pdf

Benefits Specs Tools Tour Offers.Discussion in ' Excavators ' started by shinigamix2xSep 30, Log in or Sign up. Heavy Equipment Forums. Thank you for visiting HeavyEquipmentForums. Our objective is to provide industry professionals a place to gather to exchange questions, answers and ideas. We welcome you to register using the "Register" icon at the top of the page. We'd appreciate any help you can offer in spreading the word of our new site. The more members that join, the bigger resource for all to enjoy.

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Following these guidelines will help make this the best resource for heavy equipment on the net. Thanks for joining us and I hope you enjoy your stay!! Welcome to HeavyEquipmentForums. Joined: Jun 8, Messages: 63 Location: Trinidad. Have any of you came across this problem with the C6. What baffles me the most was the reason i had to troubleshoot this excavator was because it took a while to start at first, and when start the operator said it shuts down intermittently, now one of the timing sensor at the flywheel wasn't reading and after checking the harness was at fault, after repairing it the engine started fine after one turnover.

One day later the operator called and said it wasn't starting at all. After checking again the timing sensor on the fuel rail pump was not reading. After disassembling around the pump to get to the sensor the harness and connector was also broken, I also noticed the sensor seemed a bit loose and that it too was broken!

Now to remove an entire pump to change this sensor is no easy feat. I did find a short-cut to remove that broken sensor and replace a new one but i shortened the bolt and shaved half it's head off, also modified my wrench to work in that fine space and it worked like a charm.

Long story short I was told to change the injector pump After changing the pump the engine started fine, fuel pressure etc. But it's strange, i mean do these pumps just fail without any notice? One day the engine started fine, next day it's dead. I had a machine that lost a pump in forty hours. Lost the second one at 75 hours on the same machine but that was due to the gear not torqued correctly.

I have seen pumps go and injectors go. I had one that all tested good but would not fire. All solenoids checked out.

Replaced the injector pump as i had 0 rail pressure. Finally replaced the full set of injectors and bingo. Must have had one or two by passing pressure. Joined: Jun 22, Messages: 15, Location: G. I've seen the same, pumps working fine one minute and dead the next. However the most common failure is wearout over time with the normal symptom that the engine starts first time when cold but is difficult to start when warm.

As the wear progresses the engine becomes more difficult to start from cold until it reaches a point where it won't start at all.

On the smaller common rail engines the pressure relief valve is also very sensitive to wearout and failure literally from one day to the next.This site uses cookies to create a better experience for you.

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Need help finding a Cat dealer near you? Our dealer locator provides the most up-to-date information on Cat dealers close to you. Simply enter your address and select the type of equipment you're looking for.

Or, if you already know the name of the dealer you're searching for, you can type in the dealer's name for a list of locations.

If you search for vocational trucks elsewhere you will not get any results. Extensively tested on the job, these engines use a range of Common Rail fuel systems and advanced control systems to deliver maximum uptime in the harshest environment. They have proven they can handle the toughest applications and deliver superior performance that exceeds the expectations of the most demanding users.

Industries and applications powered by C4. They are available using U. By clicking "I accept, Continue to Chat", you consent to the use of the cookies that enable the chat function. Internet Explorer users may experience issues with certain features of our site. Please try a current version of an alternate browser i. Cookie Policy. Hide remove. Open add. No Thanks I Accept. Find Dealer Need help finding a Cat dealer near you? Back to Search.AirBoss Customer asked a question.

A special timing tool is necessary for that engine. We run a few 6. I'm guessing the gear to the high pressure fuel pump spun, thus causing a timing issue. The cam position is read by the ECM via a sensor on the fuel pump.

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If that gear has spun, then the ECM will read a timing issue between the cam and the crank. The front cover must be removed, and if I recall right, the coolant must be drained to access the timing gear to utilize the timing tool. I am just now reading your reply. Somehow I missed it last month. Did you get the engine going? Previously, I borrowed the special CAT timing tool, and that was about three years ago, so I don't recall the specific TDC relation for the timing procedure.

But using the tool gets you going in the right direction. Hope everything turned out all right. Skip to Main Content. Expand search. Search Search. View This Post. August 21, at PM. We have an portable air compressor powered by an Cat C4. I have fuel "to" injectors, but engine will not fire up. No smoke or any detected combustion. Also, if I use a multimeter on the injector leads will it read on my meter, or is it too fast to register? Any help will be greatly appreciated.

Thank You. The engine was completely overhauled. Was sent to us partially dis-assembled. Do you know how to set pump at correct timing mark if engine is at tdc? I removed pump sensor, spun pump to where what I believe is the spot the sensor reads pump position. Now all I need to do is put all back together and hopefully it will fire up.

No, we will send it to an trained specialist for this issue.This site uses cookies to create a better experience for you. Other cookies are used for functional, performance, and targeting purposes to enhance your experience by personalizing content and ads, enabling third party content and features, and enabling us to analyze how this site is used. By clicking 'I Accept', you are agreeing to our use of functional, performance and targeting cookies.

Need help finding a Cat dealer near you? Our dealer locator provides the most up-to-date information on Cat dealers close to you.

cat c4 4 fuel pump timing

Simply enter your address and select the type of equipment you're looking for. Or, if you already know the name of the dealer you're searching for, you can type in the dealer's name for a list of locations. If you search for vocational trucks elsewhere you will not get any results.

Extensively tested on the job, these engines use a range of Common Rail fuel systems and advanced control systems to deliver maximum uptime in the harshest environment. They have proven they can handle the toughest applications and deliver superior performance that exceeds the expectations of the most demanding users.

Industries and applications powered by C4. They are available using U. By clicking "I accept, Continue to Chat", you consent to the use of the cookies that enable the chat function. Internet Explorer users may experience issues with certain features of our site.

cat c4 4 fuel pump timing

Please try a current version of an alternate browser i. Cookie Policy. Hide remove. Open add. No Thanks I Accept. Find Dealer Need help finding a Cat dealer near you?

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Back to Search. All Location Types. Equipment Type Reset Filters. All Equipment Types. Electrical Power. Industrial And Rail Engines. Marine Engines. Vocational Trucks. On-Highway Truck Engines. Apply Filters Skip. Back to Search Results. Select as My Dealer Deselect Dealer. You're Leaving Cat.


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