Simp's M915A1 Build Thread

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Trailboss

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Always liiked the M915, and it looks like you got a good one. Do you think you'll miss the 6x6 drive?
 

simp5782

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Always liiked the M915, and it looks like you got a good one. Do you think you'll miss the 6x6 drive?
Working on acquiring a 920 and maybe a 916. Or just donor to refurb what ive got. Had not had 6x6 on my 923 in awhile
 

simp5782

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Went out today to stretch her legs a little bit with a 100 mile round trip to pick up my uncle's D5 with a lowboy he had borrowed. Did well. Down lps its slow to be expected but it rolled well down the 2 lane highway
 

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simp5782

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Added some 11R24s to the rear to get a little more speed. Showing 68mph at 2150 or so.

Adding 395 XZLs with runflats and hemtt wheels to the front tomorrow

Installed some new mudflaps and hangers
 

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simp5782

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Replaced the leaking fan clutch with a new one. Installed new belts while i was in there as well. Replaced the supply air lines for the shutter stat. I will be replacing that thing with a thermal switch and solenoid for automatic and manual operation of the fan.

Belt numbers for reference:
Alternator : 9451 @ oreillys
Fan × 2: TR28463 at Oreillys
Water pump : 5060436 Dayco


Installed a new headlight switch with a Borg Warner # S440
Changed the oil and filters along with the fuel, coolant, and transmission filter and ran the grease gun on it.

Installed some small but powerful LED lights I got from the donkey.

Also installed a vent for forced air to the intake
 

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simp5782

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Installed some JW Speaker LEDs i got from The Donkey's garage of military parts. Took alot of amps off of the headlight switch.

Had a blower motor go out while in Georgia. So i gotta replace that. As well as the alternator is on the fritz. Not charging on the 24v side and spiking badly on the 12v side with a hard load. Will put the standard Cummins 24v alternator on it and add a bussman equalizer. I do worry about the surge from the jake power so i will have to isolate that power side i believe.

Going to install standard military turns and tails as well. I may even look at the military light switch swap. Need a harness plug to work with then.

Logged 1200mi Fri Sat Sun
 

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NDT

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Be careful that pos box hanging off the back of the alternator will catch fire.
 

simp5782

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Be careful that pos box hanging off the back of the alternator will catch fire.
Yea i ended up cutting the belt today cause it was spiking and overloading the belt. Screwing in the fuel screw and turning the truck power off unless needed to make the trip
 

NDT

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Yup spiking is advance warning of about to catch fire. You can remove the transformer rectifier box and be left with a perfectly good and reliable 12 volt alternator.
 

simp5782

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I had the alternator 24 volt transformer unit fail on my M915A1 as well. I replaced the alternator with a Delco 30si clone.

https://www.steelsoldiers.com/showthread.php?168494-Installing-a-Delco-30SI-alternator-in-a-M915A1&highlight=
Yea i saw that thread a few weeks back. I was able to nag almost a dozen of the Cummins 24v equipment alternators for really cheap awhile back. So i will only be in it $300 for the alternator and the equalizer. The 30si duals arent common by no means
 

Swamp Donkey

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Installed some JW Speaker LEDs i got from The Donkey's garage of military parts. Took alot of amps off of the headlight switch.

Had a blower motor go out while in Georgia. So i gotta replace that. As well as the alternator is on the fritz. Not charging on the 24v side and spiking badly on the 12v side with a hard load. Will put the standard Cummins 24v alternator on it and add a bussman equalizer. I do worry about the surge from the jake power so i will have to isolate that power side i believe.

Going to install standard military turns and tails as well. I may even look at the military light switch swap. Need a harness plug to work with then.

Logged 1200mi Fri Sat Sun
Hmmm...what happened to your hood mirrors?
 

SCM35A2

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The hemtt wheels & other progress you've made look bad axx! Curious though who you got the new headlights from??
 

Swamp Donkey

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Took it off to paint it to match the new one. Since you gave me a tiny spot mirror i stopped and bought a real one on the way back
Tiny? Maybe you need a couple of the security mirrors they put in the back of the drug stores and gas stations then, lol.

thamb03.jpg
 
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