C Brake on a BC4. Posted By scsiguy - still 7 Years Ago. Flat Ascending Flat Descending Threaded. Third Gear. Thanks Glenn, there's a lot of good information there. I'm wondering though, the serial numbers on the block and tag match - and the warranty date even matches your info, but the tag says CPL and not Any idea of why?

Do you have the CPL pump specs and injectors? I wouldn't need it anyway. I do understand about the oil pressure thing of the Jake I have and the older engines.

Like I said, to heck with the Jake. I may end up fixing up the west coast '74 that I have. If I do, I'll put the Mod. Also, I understand about the push tubes jumping out of the cam followers and breaking the block. A friend had a driver that kept his foot in it going down a mountain out east somewhere. It was in a B and they just left the truck out there.

Fred Schrope - Upland, IN. The wrong model some times will do damage to push tubes and valves. This is a BC4 and it has a higher lift injector profile than other cummins. Also The 25 and 25A is made for a small cam. I have seen many engines with the wrong jakes on them with out a problem but have seen them also come in with push tubes in the pan and one go thru the pan as we as parts of the rockers break and go down behing th cam and lower cam followers then that will push the side of the block out.

Most of the time it just bends the push tubes. Glenn Akers. These are on the tag that is pretty hard to see as it's behind the frame rail. Is one of those the serial number? Duh, I just went out and looked at the LR of the block. I'm sure the C Brake I mentioned above won't fit as it's a different profile and bolt pattern.

I did find another one though. It's a Jake Brake and came off a small cam The only markings I can find on it is on the inside and is cast or probably stamped: Mod. I'll bet that one would work. Here's the dope: This is on my '87 Freightliner that I converted to a motor home. It used to be a Maverick truck and apparently had a jake brake originally.

It was gone when I bought it in but the injector rockers and exhaust crossheads and the long studs and the wiring were still there. The inside studs have been cut off with a torch.Having trouble finding your part? Let TPI find the part for you. We want to hear from you! Please use this form to send us anything regarding your user experience with TPI. We also welcome any suggestions that you may have, so provide us with as much information as you can so that we can continue to improve TPI to suit your needs.

Cummins Engine Brake Parts. Refine your search results. Detailed Detailed View List View. York, Ontario. Truck Year Engine Make Cummins. Engine Model N Truck Make International.

Part Call us Call the following number for the part. Chamberlain, South Dakota. Engine Model Big Cam. Ucon, Idaho. Truck Make Not Available. Camrose, Alberta. Engine Model N14 Plus. KanKakee, Illinois. Good, used Jake Brake off of a Cummins N Casting number is Please see pictures. Bruceville, Texas. Truck Year Not Available. Casting R.Having trouble finding your part? Let TPI find the part for you. We want to hear from you! Please use this form to send us anything regarding your user experience with TPI.

We also welcome any suggestions that you may have, so provide us with as much information as you can so that we can continue to improve TPI to suit your needs. Cummins N14 Engine Brake Parts. Refine your search results. Detailed Detailed View List View. York, Ontario. Truck Year Engine Make Cummins. Engine Model N Truck Make International. Part Call us Call the following number for the part. Ucon, Idaho. Truck Make Not Available.

KanKakee, Illinois. Good, used Jake Brake off of a Cummins N Casting number is Please see pictures. Lubbock, Texas. Phoenix, Arizona.Filter 3. Industry Truck Parts. Top-Category Engine Parts. Manufacturer Cummins. Save Search. Email Alert. Keyword Search. Truck Parts Cummins Used Model Year. Min Year - Max Year United States 52 Canada 2. Select a country to view available states.

cummins c brake

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Cummins N14 Engine Brake Parts

Part Call us Today, We ship everywhere. Used Cummins Jake Brake Set. Cummins N14 Engine Brake. Cummins N14 Engine Brake for a International.

cummins c brake

Cummins B Engine Brake. Good, used Jake Brake off of a Cummins N Casting number is Please see pictures. For further information feel free to call or email us. We ship anywhere!!! Thank you. Cummins Big Cam Engine Brake. Want to narrow or modify your search criteria? Filter by Price. Filter by Year. Filter by Location.The Cummins Engine Brake has earned its reputation throughout the trucking industry as being one of the most technically superior engine braking products available.

Designed jointly by heavy duty experts at Cummins and Jacobs, the "C brake by Jacobs" products have increased the safety of trucking by immeasurable amounts by helping drivers keep control of their ton rigs when hauling cargo through hilly or mountainous terrain.

However, like any mechanical device, performance of these engine braking systems can deteriorate over time. Engine brake components wear at the same rate as engine components, reducing the braking horsepower.

Cummins Parts Catalog

We recommend tuning up the Engine Brake at the time of overhead set or engine overhaul. In order to make this maintenance as simple as possible, Tune Up kits are available for all Cummins engines.

These kits come complete with all the parts required for tune up. They are competitively priced with respect to the competition and customers can save even more if the tune up is combined with another service event like an overhead set or engine overhaul. When should a brake Tune-up be carried out? Why do I need to tune up my Engine Brake? Periodic and regular tune up of your engine brake will maintain the maximum power and performance of your engine brake.

It will avoid unexpected downtime and unscheduled vehicle maintenance and thereby increase productivity by preventing the need to take a truck out of service for a brake related problem. How do I select the right Tune Up Kit? To select the right tune up kit for your engine please see the following table:. What does the Tune-Up Kit contain? Every component is engineered to the latest specs, so that the Engine Brake will work as good as new.

Each kit also contains all of the parts and installation instructions required to restore the brake to peak operating performance. By clicking any link on this page, you give consent for us to set cookies. For more information, see our Privacy and Legal page. Enter Site.

cummins c brake

Trouble logging in? Create an Account. Service Locator. During an engine overhead adjustment or an engine overhaul or When a driver notices that braking performance has deteriorated Why do I need to tune up my Engine Brake?

Please click on the Contact Us button in the top right corner of any page. Contact Us. Customer Login.When the throttle is closed you take your foot off the gasthe airflow is significantly restricted. It is the work that your engine has to do against this restricted air flow that provides the braking, sort of like a vacuum pump. This braking effect remains as long as your car wheels remain connected to your motor. The braking force provided by the restricted airflow in this case will vary depending on the engine and what gear your car is in.

Cummins Engine Brakes / Jake Brakes For Sale

A diesel motor, on the other hand, has no such similar air restriction device. The diesel motor also does not have a spark plug to ignite the fuel contents. Instead, they use air compression and the heat created by it, to ignite the fuel. This continues the process of drawing air into the cylinders, which is then compressed by the pistons as they move back up.

Even though there is little or no fuel to ignite in the cylinder, the compressed air still provides something of a spring-back effect on the piston, pushing it back down.

This provides a boost in efficiency, in that this process utilizes some of the energy used to compress the air, even without ignition in the cylinder. While this is more efficient, it turns out to not be helpful when you want to try to use the engine to help slow the vehicle down. The Jake Brake works by releasing the stored compressed air before it can have a chance to spring back the piston.

Basically, an extra nob, or lobe, is added to the camshaft that opens an added exhaust valve, which then releases all of the stored compressed energy out into the atmosphere, assuming the compression brake was engaged.

When the compression brake is not engaged, the mechanism controlling the valve allows it to stay closed, even though the camshaft is still turning using a telescoping stem that can be locked or unlocked.

The energy required to compress the air, which is then released before it can be used to help slightly power the down-stroke, then has the effect of slowing the vehicle down as the air is compressed. Cummins had prior contractual arrangements with the Cummins Engine Company, so he first attempted to market his idea to them. They unwisely turned him down. The novelty of the idea and the combined factors of an untried mechanical system and the uncertainty of its commercial merit, prompted all of the other manufacturers who used three cam diesel engines to also turned him down.

After successful engine tests, an option agreement between Cummins and the Jacobs Manufacturing company was entered into in and the Jacobs Company established its new Clessie L Cummins Division.

Cummins Engine Brake Parts

The Jake Brake was born! Sorry bud but I lost interest when I got to the 4th word of the 2nd paragraph where you used the word motor. The entire article is painful to read — break instead of brake, motor instead of engine, diesel instead of Diesel, plus numerous punctuation errors. Good article on jake brakes.Mary, United States South Iceland at Leisure, June 2015 Iceland was a life changer.

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Cummins Jake brake From Hell

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cummins c brake

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