US / North America

Tech Bulletin (TSB-1041, US) - replacement of older style regulators with 105-396 (8RL3024)

The redesign of the 105-351 (8RL3021) and 105-352 (8RL3022) was done to incorporate a sealed regulator housing to improve the reliability of the regulator. This redesign also allowed us to integrate the enhancements listed below, along with offering a common regulator for multiple alternators.

  • The adjustment potentiometer was removed to eliminate the possibility of improper adjustments by the user.
  • the new 105-396 (8RL3024) regulator is compatible with both the 3 wire 105-351 and the 4 wire 105-352.

The attached technical bulletin provides wiring details on how to replace the old style regulators with the new one.

Twin-Power Multiple Alternator System For Fire Trucks and Heavy Emergency Vehicles

Power X2 SystemUpdate: The Twin-Power alternators have been discontinued and superceded with the new MultiPower alternators. For new installations please use the new MultiPower alternators. Continue reading below for information on previous installations of the discontinued Twin-Power alternators. A new brochure has been released showing the features and benefits of the Twin-Power Fire Truck alternator system. This system allows for the installation of two 12/14 volt, 270 amp high output alternators for applications using the Detroit Diesel Series 60 dual alternator mounting bracket configuration. The dual alternator installation provides 340 amps at engine idle, and 540 amps during pumping on these vehicles.

In addition to the brochure, 6 technical service bulletins have been attached to provide additional information on this system.

Changes To The Core Return Policy - US & Canada

FL-1088 Core Return PolicyImportant Announcement for our US and Canadian Distributors

Our product core RMA (Return Material Authorization) policy has changed! As of October 6, 2006 you will need to adhere to the following process for returning cores for credit:

Technical Bulletin (US) - School Bus Application Guide

school bus*Update - this TSB has been updated, please download the new version attached.

We all know that the most important consideration when it comes to a school bus is safety. The second most important thing, when it comes to the alternator on the bus, is reliability. The Technical Service Bulletin attached includes many helpful hints on ways to ensure that your school bus has the correct alternator and cabling so that it is both safe and reliable. It will help you to select the correct size alternator for your application, along with plenty of helpful information on batteries, cabling, and even how to read an alternator output curve. It also includes a handy worksheet for calculating amperage demands.

As always, if you have any comments or questions feel free to leave them here.

175 Amp 4830/4834 Reman Alternators are being discontinued

As part of our initiative to upgrade our 175 amp alternators to 185 amp, we are superseding the 4830LCRM and the 4834LCRM with the 185 amp versions, 4833LGHRM and 4836LGHRM. Starting now, and through all of 2007 we will accept both 175 amp and 185 amp cores when you purchase the 185 amp units. That makes this a great opportunity to upgrade to the 185 amp alternators and still get credit for your 175 amp cores.

The 185 amp reman units are available now. This is an upgrade program. Even though you will pay a little more for these remanufactured alternator models, you get all of the benefits of the 185 amp models, and we will accept either 175 or 185 amp cores. The easiest way to differentiate the cores is by the noticing the external rectifier on the 185 amp alternators:

Tech Bulletin (US)- how to replace the 7726JA with a 5523AA Alternator

7726The A0017726JA is a 1" spool mount, 12/14 volt, 200 amp alternator that was originally designed for shuttle bus and motorcoach applications that utilized the Ford V10 (6.8 liter) and V8 (5.4 liter) gasoline and CNG (compressed natural gas) engines.

While we limited the warranty of these units to only those applications that had been specifically approved by our Application Engineering group, we found that they were being installed in un-approved applications that were causing them to operate beyond their design specifications. Therefore, we felt that it was in the best interest of the end user to discontinue the sale and production of these units.

Tech bulletin (US) - 4900 Series housing styles and through bolts

Leece-Neville is currently manufacturing two different style rear housings on the 4900 (pad mount) series of high amperage alternators. This article shows the differences between the housings and includes details on the through bolts that are being used (TSB-1047 is attached).

Leece-Neville Announces New 185 amp Alternator for School Bus Applications

4836LGHOh, how times change. When we first started manufacturing and marketing alternators for school buses here in the US we knew that our 140 amp 2500 series was more than a match for the task. These days, we know that school buses need an alternator capable of a minimum output of 185 amps, and that as soon as you throw on even a single air conditioning unit that even that isn't going to be enough. On top of that, the new EPA diesel engine requirements are driving the under hood temperatures of these buses higher and higher, creating a very difficult environment for the alternator. It's time for a change, so this is what we're doing to meet these challenges.

Our 444 vs the 22SI

MDA alternator Did you know that our 110-444 alternator (the MDA series) is a direct replacement for the 22SITM? Product highlights include: Fan design and external field rectifier heat sinks offer improved cooling. Sealed brush box keeps dirt from getting pulled into the brushes. Vibration tested and approved for Class 8 applications. View the flyer attached (FL-1078) for additional details. In addition, there is a Technical Service Bulletin (TSB-1042) that shows the wiring differences between the 444 and the 22SITM. Don't be afraid to leave a comment here if you have any questions.

Wiring instructions for the MDA/MDP/ 444 alternators, compared to 22SI

MDA wire thumbThere's been some confusion about the wiring configuration for the MDA / MDP / 444 alternators. These units were initially marketed as direct, drop-in replacements for the Remy 22SITM alternators. However, the wiring configuration is slightly different, and if you're not careful this can create a problem.

The attached technical bulletin (TSB-1042) shows how to wire up the Leece-Neville 444 style alternator, and even shows the wiring on a 22SITM for comparison.

Let us know if this helps!
Click here to download TSB-1042
http://www.prestolite.com/literature/tech/alts/TSB-1042_MDA-MDP_wiring.pdf