Here at Highway & Heavy Parts, we pride ourselves on our extensive diesel engine knowledge and experience, including fuel systems.
We make sure that the parts we carry only come from quality, reputable suppliers. You want the best parts for your engine and we want to bring them to you!
We’re proud to carry Genuine Bosch components, including a unit pump system for the Mack E7.
In this article, we’re going through how the system works and how Genuine Bosch components from HHP might be the best choice for your diesel engine.
How the Unit Pump System Works in Your Diesel Engine
About the Unit Pump System
When we’re looking at this type of pump, especially for the Mack E7, we’ll typically see them on smaller diesel engines, like compact tractors.
It can really be considered a PFR, where the component goes into the side of the block and runs off the camshaft.
While there may still be a camshaft, you now have six individual injection pumps on this system, which can all be serviced individually.
When one part fails on an inline six pump, you’re looking at a pretty complicated repair. It all has to be torn down and it generally takes about 9-10 hours to rebuild the pump.
Unit Pumps in the Mack E7
The pump for the Mack E7 normally will have two bolts on a fuel line, so you’ll be able to just pull it out and put the new one in.
This system has better serviceability, less cost, and is easier to diagnose issues on.
When the move from inline to unit pumps first began, we saw them most commonly on the Mack and Mercedes engines.
Diagnosing and Servicing the Unit Pump on the Mack E7
Diagnosing issues with this pump is made easy by the fact that you can pull the piece off and move it from hole to hole, noting if the problem follows. This way, you’ll be able to see what part of the system is actually giving you trouble.
We hear from customers who have questions about how to line up the gears or time the pump properly. This particular pump takes away these issues.
Similarly, these systems are easier to service.
This is especially true for people who might not be familiar with taking off the injection pumps, timing them, and everything else that goes into the repair.
Features of the Bosch Unit Pump for the Mack E7
Established unit pump systems and unit injector systems can be used in large engines generating up to 350 kilowatts per cylinder.
These systems help with emissions regulation compliance, because they achieve a low fuel consumption by preparing the mixture efficiently. This, then, improves combustion.
To help ensure reliable pressure buildup, each engine cylinder on the unit pump system has an electronically controlled injection pump UP with a high-precision design installed.
Your nozzle holder assembly will be responsible for injecting fuel.
The unit injector brings pressure generation and injection together in one compact part. The start and duration of the injection can be adapted according to requirements, so you’re always getting appropriate fuel quantity and pressure, even at low speeds.
The electronic engine controls all component functions on both systems.
Benefits of This Pump
When you buy a Genuine Bosch Unit pump for the Mack E7 from HHP, you’ll be getting a pump with:
- Easily and Quickly Adjust Injection Quantity
- Improved Emission Compliance
- Long Service Life
- Improved Combustion
At HHP, we only want to bring you the best parts for your diesel engine. That’s why we’re proud to carry Genuine Bosch components.
This pump has been built with the latest upgrades to components and specifications, using the latest OEM technology and tooling available.
It’s backed by an industry leading warranty and expert advice from our experienced staff. We want to take the risk out of buying diesel engine parts.
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