M998 Alternator Help

[gokeeper]

I just picked up my first M998 and got her home. I noticed the wait to start light just barely flashed and does not stay on. I downloaded all of the TM and started reading all of the threads on these vehicles over the last several days. Been inspecting each parts and checking cleaning grounds, preparing to do normal maintenance etc.

I found the Alternator is not charging, found that it had been replaced somewhat recently. I am assuming a cheap aftermarket Alternator please take a look at the pictures. Can anyone Identify the alternator? In my troubleshooting there is 0 voltage at the alternator since the voltage is fed through the EESS and with the lack of wait light activation I am assuming a bad EESS (Will troubleshoot that more tonight).

I assume the last owner knew it wasn't charging and replaced the Alternator which also didn't work. Main question is has anyone seen this alternator? Second question wire 568 is not connected to the alternator but believe it should be at the top port but without any information on the alternator I cant tell. Second if the EESS is bad can I bypass the EESS just on the batter voltage side to get the alternator charging to test it while I await parts? Looking at the diagrams its possible just questioning weather one should?

 

[Mogman]

That looks like a fairly high output alternator, it should not have been wired through the EESS box but directly to the batteries, the EESS box is only marginally capable of handling a 60A alternator.
You might want to pop that EESS box open and looksee inside.

 

[gokeeper]

That's the plan tonight, see what it looks like inside. Thanks

 

[juanprado]

That looks like a prestolite /leece- neville alt. It could be off civilian 24v construction equipment. Is there any other tag or numbers?

 

[gokeeper]

I have looked all over it and the small number tag is the only ID I can find. I may try to take it off or take the back cover off and see if there are any markings.


Sent from my iPhone using Tapatalk

 

[juanprado]

typically the cases are stamped with letters/symbols for the wiring. The smooth post is usually a tach. Prestolite tech support might be willing to help?

 

[gokeeper]

I have located the alternator. It is a 60 Amp Generic

Alternator for 36SI Series IR/EF 24-Volt 60 Amp BI, Caterpillar 10R8877

Shop for the Alternator for 36SI Series IR/EF; 24-Volt; 60 Amp; BI, Caterpillar 10R8877 at DB Electrical. The best selection, low prices, fast shipping, and great customer service.

www.dbelectrical.com

 

[Mogman]

I have located the alternator. It is a 60 Amp Generic

Alternator for 36SI Series IR/EF 24-Volt 60 Amp BI, Caterpillar 10R8877

Shop for the Alternator for 36SI Series IR/EF; 24-Volt; 60 Amp; BI, Caterpillar 10R8877 at DB Electrical. The best selection, low prices, fast shipping, and great customer service.

www.dbelectrical.com

Well that should work, sounds like the contactor in the EESS box is bad at least

 

[gokeeper]

Well as expected the issue is in the EESS box bad contractor and at least one transistor and 2-3 diodes. Looks like I will be on the hunt for a S3 box. I really appreciate all of the help on this one.

Sent from my iPhone using Tapatalk

 

[Mogman]

Well as expected the issue is in the EESS box bad contractor and at least one transistor and 2-3 diodes. Looks like I will be on the hunt for a S3 box. I really appreciate all of the help on this one.

Sent from my iPhone using Tapatalk

Yep that one is toast, we have a member that sells a manual box that eliminates the electronic glow plug control for a manual push button control.
Or you can build one yourself if confident in your abilities.

 

[gokeeper]

Yep that one is toast, we have a member that sells a manual box that eliminates the electronic glow plug control for a manual push button control

Is that the Camotek? Or another one?


Sent from my iPhone using Tapatalk

 

[Mogman]

Is that the Camotek? Or another one?


Sent from my iPhone using Tapatalk

Yes CAMO

 

[TOBASH]

Easy and cheap to repair yours.

Also Camo sells a good unit but he is not the only one who sells the push button units.

How to bypass PCB? I am aware some HMMWV owners have done it. TOBASH

I'm not trying to speak sacrilege here, and I don't want to precipitate a war of words. :shock: How might I build a manual control box? My 24Volt Landcruiser just uses a glow wire to show glow plugs are ready, and then she just starts right up with the twist of a key. Civilian 6.2 Diesel...

www.steelsoldiers.com

 

[gokeeper]

Easy and cheap to repair yours.

Also Camo sells a good unit but he is not the only one who sells the push button units.

How to bypass PCB? I am aware some HMMWV owners have done it. TOBASH

I'm not trying to speak sacrilege here, and I don't want to precipitate a war of words. :shock: How might I build a manual control box? My 24Volt Landcruiser just uses a glow wire to show glow plugs are ready, and then she just starts right up with the twist of a key. Civilian 6.2 Diesel...

www.steelsoldiers.com

Thank you for this, I have been studying over it the last couple days.


Sent from my iPhone using Tapatalk

 

[TOBASH]

Thank you for this, I have been studying over it the last couple days.


Sent from my iPhone using Tapatalk

Feel free to PM me a tele number. I can talk you though it.

 

[Mullaney]

Feel free to PM me a tele number. I can talk you though it.

.
@gokeeper doesn't have enough "points" to do a PM @TOBASH .
You need to initiate the PM...

 

[TOBASH]

.
@gokeeper doesn't have enough "points" to do a PM @TOBASH .
You need to initiate the PM...

PM sent