Heavy Duty Diesel Engine Tech Tips & How To Help

May
23
2017

How does a Variable Geometry Turbocharger work?

How does a Variable Geometry Turbocharger work? How does a Variable Geometry Turbocharger work? Variable Geometry in Diesel Engines Variable geometry is a...

May
16
2017

“What is a core charge and why do I have to pay it?”

What is a core charge and why do I have to pay it? Considering how common core charges are in the diesel engine industry, a surprising number of our customers ask us that...

May
9
2017

Oil Change Intervals after Diesel Engine Break-In

  Oil Change Intervals After Diesel Engine Break-In   Proper break-in after an engine rebuild is one of the things that we find a lot of our customers don’t know about....

May
2
2017

The Pros and Cons of Aftermarket Diesel Engine Parts

HHP's look at the pros and cons of using aftermarket diesel engine parts. Here at Highway and HeavyParts we sell aftermarket diesel parts . An aftermarket part is any part not...

May
1
2017

Apr
25
2017

Reusing Pistons to Save Money: The Benefits and Drawbacks

Rebuilding an engine on a Class 8 truck is a costly procedure. Depending on how extensive the repairs, the parts alone can range from fifteen hundred to fifteen thousand. One option for reducing...

Apr
18
2017

Rebuild Cylinder Head vs Remanufactured Cylinder Head

Rebuilt Head or Remanufactured Head? When the cylinder head in your diesel engine reaches the end of its useful life, you have an important decision to make, and you only...

Apr
11
2017

Camshafts: Replace or Not to Replace?

Camshafts – To Replace or Not to Replace? That is the Question So, you have 1,000,000 plus miles on your engine and you’ve decided it’s time for a rebuild. Some parts...

Apr
4
2017

Common Turbo Problems & Failures

  Common Turbo Problems / Failures     Compressor Side Leaks   Plugged air cleaner :   This will cause a vacuum to build in...

Mar
28
2017

What goes into a Remanufactured Cylinder Head from HHP?

The Cylinder Head is on of the most important pieces of your engine, and engine repairs due to a faulty cylinder head are time consuming and expensive. So, what goes into one of HHP's...

Mar
28
2017

Diesel Engine Break In Procedure

We often get calls about the break in procedure of a newly rebuilt engine. Proper break in is critical and sometimes overlooked. Even though you may have used one of our outstanding overhaul kits...

Nov
19
2015

Piston Pin Retainers Failure Analysis

A. Piston pin retainer improperly installed

The pin retainer came loose, severely damaging the cylinder kit.

 

 

 



Nov
19
2015

Piston Rings Failure Analysis

A. Broken oil control ring caused by assembly error The following picture shows the broken oil control ring positioned on a granite flat surface. Note the upward bend on the broken...

Nov
19
2015

Connecting Rod Failure Analysis

A. Cylinder kit failure from lack of proper lubrication The first two pictures show the spun connecting rod bearings.   The next picture shows the lower part...

Nov
18
2015

Liner Failure Analysis

A. Cylinder kit failure caused by twisted liner o-ring The picture shows one of the liner o-rings that twisted during assembly in engine.      ...

Nov
18
2015

Piston Pin Failure Analysis

A. Piston pin failure caused by lack of lubrication
Lack of proper lubrication is cause of the galled and worn piston pin.

Nov
18
2015

Piston Skirt Failure Analysis

A. Piston skirt on upside down The following picture shows the piston skirt in the liner with the skirt on upside down. Red arrows point to bottom of skirt.  ...

Nov
18
2015

Piston Crowns Failure Analysis

A. Piston damaged by adding cold coolant to a hot engine       B. Piston failure caused by overheat and detonation Cylinder kit...

Nov
18
2015

Rod Bearings Failure Analysis

A. Bearing failure caused by foreign material on the back of the bearing The next two pictures show a rod bearing with a piece of tape or paper on the back of the bearing where it...

Nov
18
2015

Main Bearings Failure Analysis

A. Bearing failures caused by lack of proper lubrication Notice the extremely polished condition of the bearings with the worst streaking toward the center of the bearing. This is...

Nov
18
2015

Valve Bridges Failure Analysis

B. Valve failure caused by turned valve bridge Complaint: Valve head came off damaging cylinder kit and head. The first picture shows the valve head. The valve broke in the...

Nov
18
2015

Valve Keepers-Retainers Failure Analysis

A. Valve failure caused by impact loading The following pictures shows material returned. The yellow arrow pointing at the valve retainers show they are undamaged. The rotators...

Nov
18
2015

Valve Guides Failure Analysis

A. Valve and valve guide wear caused by poor maintenance  The first two pictures show the wear in the lower part of the valve guide closest to the valve head. The second picture...

Nov
18
2015

Valves Failure Analysis

A. Natural gas engine valve failure The first picture shows two valves with extreme recession. The following is by Lloyd Leugner of Maintenance Technology...

Nov
17
2015

Oil Pump Failure Analysis

A.  Oil pump failure caused by improper installation The pictures show the surface area where the pump interfaces with the block. Note the buildup of lock tight in these locations...

Nov
17
2015

Piston Cooler Failure Analysis

A. Piston cooler failure caused by contamination in the oil system Contamination left in the oil system from an engine overhaul plugged the piston cooler and caused the...

Nov
17
2015

Seals Failure Analysis

A. Seal failure caused by installation error The following two pictures show two locations on the seal that are damaged and provide a leak path for oil. The cause of failure, oil...

Nov
17
2015

Block Gaskets Failure Analysis

A. Gasket failure caused by assembly errors – use of sealant/glue Complaint: Oil pan gasket leaks and comes apart. The following pictures show the oil pan gaskets were...

Nov
17
2015

Head Gaskets Failure Analysis

A. Gasket failure caused by detonation The first picture shows the damage to the fire ring on #4 cylinder of the returned head gasket. Note: the condition of the fire ring in...

Nov
17
2015

Piston Seizure Quick Reference

Quick Reference Guide Piston seizures will only occur when metal-to-metal contact between the piston, rings to liners exists. Thermal expansion and/or lack of lubrication are...

Nov
17
2015

Reasons for Oil Consumption

What is excess oil consumption All engine manufacturers have specific acceptable levels of oil consumption - what the expected oil consumption should be as part of normal operating...

Nov
17
2015

Camshaft Failure: Camshaft Bearings

A. Camshaft bearing journal wear caused by uneven bearing support Bearings require the proper support, alignment and fit to function properly. The O.D. of the bearing below shows very...

Nov
4
2015

Snacks to Keep You Alert When Driving

Fatigue can set in when truck driving. Often times, what you eat contributes to your alertness on the road. Some snack options might surprise you with their high drowsiness factor. High glycemic...

Nov
4
2015

Safe Winter Truck Driving Tips

Be safe. Stay safe. It’s time to prepare for the changes to your driving that you’ll need to make in response to winter weather and adverse conditions. Plan: Prepare...

Oct
29
2015

Turbocharger Failure Diagnostic Checklist

Turbocharger Failure Diagnostic Checklist   The following list provides the most common symptoms related to turbocharger failure and possible causes. Before replacing your...

Oct
21
2015

How to Get Better Fuel Economy with your Diesel Truck

Diesels are known to get great mileage. They typically deliver 25 to 30 percent better fuel economy than similarly performing gasoline engines. Although diesel fuel used to be cheaper than...

Oct
21
2015

Track Tension Adjusting and Maintenance Tips

Adjusters are designed to absorb shock, provide proper track tension and protect track systems and idlers.  It’s critical to maximize track life by maintaining proper track...

Oct
15
2015

Common Diesel Acronyms

Common Diesel Acronyms   Term Comments Term Comments ACERT Advance Combustion Emission Reduction...

Oct
8
2015

Flywheel versus Flexplate

  Flywheels and flexplates have similarities, but are not the same. Often referred to as being the same part, flywheels and flexplates help accomplish the same task, but in different...

Oct
7
2015

Preventing Premature Cam Bearing Failure

    For many years, nearly all camshaft bearings were manufactured with a lining of babbitt. Babbitt is a soft slippery material made up primarily of lead and tin and is...

Oct
7
2015

Crankshaft and Engine Bearing Installation Guidelines

           1. Check all connecting rod housing bores for taper, roundness and size, using a bore gauge or inside micrometer. Check for...

Sep
21
2015

Oil Cooler Benefits

The oil cooler is not typically a component that goes bad, but should be replaced after any catastrophic engine failure. The best way to protect a new engine investment is to put in a new...

Aug
4
2015

Ways to Keep Your Turbocharger Healthy

Turbo chargers are a key component of a diesel truck. Turbos produce higher power outputs and improve the efficiency of the engine, not to mention they are extremely exhilarating! They are...

Jul
8
2015

5 Tips to Help Your Diesel Engine Live Longer

There are many great ways to help your diesel engine have a long life. Taking care of your diesel engine does not take too much effort, but it does require some attention. Here are 5 tips to keep...

Jun
25
2015

5 Easy Ways to Improve Fuel Economy

There are more than a few ways you can improve the fuel economy of your diesel truck. Upgrading your fuel injectors or replacing your worn turbocharger will have a great impact on your fuel...

Feb
9
2015

N14 Piston Skirt Design Change

Cummins made a change to their N14 piston skirt design. As Cummins doesn't sell the skirt separately, they didn't give the skirt a part number. Cummins only sells the skirt as part of a complete...

Jan
7
2015

DT466E and DT530E Liner O-ring Change

Near the end of 2004 International Navistar made a change in the DT466E and DT530E cylinder liner o-ring configuration. They moved from the "old" style liner that used both an o-ring and crevice...

Dec
18
2014

Engine Sleeve / Liner Pitting Explained

I'm sure everyone out there religiously takes oil samples at every change so you'll know if you have a drop of coolant in your oil, Right? Yeah, Right! So, here's a couple of more likely...

Dec
4
2014

Detroit Diesel 14L New Piston Design

Detroit Diesel has released a new piston design for use in current and older model Series 60 14L engines. The new piston has a longer skirt and a new design to the 2nd compression ring. The new...

Nov
13
2014

3406E / C15 Fuel in Coolant, Engine Miss Explained

Caterpillar 3406E, C15, & C15 Acert engines all use the same style cylinder head, injectors, and injector cups (see images 1 & 2). The injector on these engines seats directly against the...

Oct
17
2014

Broken or Cracked Cylinder Liner Flange

Cylinder liner flange and flange seat The cylinder block has circular, plane recesses, called flange seats or counterbores. These hold the cylinder liners in the cylinder block. The...

Sep
26
2014

Detroit Diesel Series 60 Top Liner Cooling

Many people have heard of Detroit Diesel Series 60 Top Liner Cooling or Top Cooled Liners, but don't know what it  really is. Here's a basic explanation: Starting with engine serial...

Jul
14
2014

Cummins N14 Inframe Rebuild Kit - Additional Items

This is a quick blog to share some inexpensive additional pieces you should think about changing when you rebuild your Cummins N14. The Cummins N14 is a strong, reliable engine that will just keep...

Jun
26
2014

Brake Air Compressor Troubleshooting - Simplified

The basics If you're reading this you probably already know at least a little something about brake air compressors. So we won't bore you with the simple stuff. What you really need to know is...

Jun
6
2014

Trucking Facts: Looking to the Future

Did you know, if you combined all of the cargo delivered by trucks last year, you would create a chain that would run from the earth to the Moon over eleven times? The above is one of several...

May
12
2014

Preventive Maintenance Inspection (PMI): Do it Properly to Increase Profits

Preventive Maintenance Inspection (PMI) is a simple way to prevent costly repairs and breakdowns and maximize uptime. Done properly, it's a great low-cost, high-reward practice, whether you...

Dec
26
2013

Proposed Category 11 Oil (PC-11): What It Means for the Heavy Highway Industry

Proposed Category 11 (PC-11): What It Means for the Heavy Highway Industry   Until now, oil changes have been rather routine maintenance procedures for diesel engine fleet owners,...

Oct
22
2013

Increase Profit with Remanufactured Injectors From HHP!

When it comes to running a highly profitable diesel engine repair shop, staying one step ahead of your competition is critical to success. With profit margins shrinking and customer demands...

Oct
6
2013

Boost Profits by Rebuilding Parts and Selling Labor

Though handling your shop’s day-to-day accounting operations might not be exactly what you have in mind when you walk into work in the morning, it certainly doesn’t hurt to have a firm...

Sep
15
2013

Reusing Pistons To Save Money. The benefits and Drawbacks

Rebuilding an engine on a Class 8 truck is a costly procedure. Depending on how extensive the repairs, the parts alone can range from fifteen hundred to fifteen thousand. One option for reducing...

Aug
25
2013

Rebuilt Head or Remanufactured Head?

When the cylinder head in your diesel engine reaches the end of its useful life, you have an important decision to make. You have two options:  Rebuilt...

Aug
4
2013

Camshafts – Replace or not to Replace? That is the Question.

So, you have 1,000,000 plus miles on your engine and you’ve decided it’s time for a rebuild. Some parts you know you have to replace but others you aren’t so sure about. Fuel...

Aug
1
2013

Highway and Heavy Tech Tips: Common Turbo Problems

Common Turbo Problems / Failures Highway and Heavy Parts (HHP) presents the latest in our tech tip blog series. This month we will cover lubricating oil in the turbocharger and external...