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There are big honkin diodes set into the epoxy with the main studs such that it protects against reverse polarity. There is big caps to suck up any massive voltage spikes such as when the LBCD trips the battery disconnect. And there is rudimentary circuitry to monitor how much load the...

Got it torn down. Took an epic amount of digging out the silicone impregnated sand..... Will generate a rough schematic based on the circuit. Looks pretty straightforward as far as what this thing does: Haven't decided if these leaked or got blown up. Rick

STOP and change/service the air drier. 1000 miles is easily enough to WRECK the compressor with back pressure. If you have moisture in the air system then the drier is not doing it's job. In wet climates they should be serviced every 6 months..... I made the mistake of driving 2700 miles with...

That's all of 30 seconds of cranking. Reminds me of the 800 and 900 series trucks and the HMMWV's....... My C7 at similar temp is about 5-10 seconds of cranking at most. That's without Ether. I will take a video when the temp drops back down. I have some interesting footage I'm going to post on...

The "intake heater" lamp only comes on after it's started. So...... I don't *think* it's operating unless you are cranking or the engine is running. It takes a little more cranking to get fired up at the 26 degrees we had last week - maybe 5 seconds of cranking compared to 2 seconds at normal...

That is my understanding. There's no way to manually trigger the ether. The intake heater has a corresponding dash indicator lamp. I installed an ether bottle because the black plastic cap wasn't keeping out water from the fitting anyway as there was no gasket. I ended up using a silicone garden...

My C7 has both a grid heater, and the military installed ether system.

These are BIG caps. Near as I can tell they have two 120,000 μF @ 16v caps on the 12v side..... I haven't dug far enough into it to see the rating on the top two and I'm just guessing they might be different because up there is the 28v side. Purely a guess though. And yes - I'm guessing to cut...

When addressing loose and corroded connections at the LBCD I noted that several studs were loose in the housing. After confirming with several members that this was a clear indication of failure (the unit is no longer sealed against moisture at the very least), I procured and installed a...

Nice. I'll take a second look in the box. The bottle I procured was a "Katz" branded unit. Maybe I missed the included gasket!

Spend more up-front and get one that's not a basket case. The newer the better. A1 trucks have MANY improvements in reliability.

It's below freezing here today, and my C7 truck started up with very little difficulty. I don't have the ether bottle installed yet. Still trying to track down the gasket for the connection. NAPA couldn't get it for me even though I have the part number. I'll probably try FleetPride or find one...

My local NAPA had the ether cylinders in stock. Pretty common item - do you have a FleetPride near you? Unless your NAPA does commercial stuff on a regular basis they probably won't know what you are talking about. Rick

Chad (Broke Overland) seems to be doing just fine in the snow with a set of Z cables on the rear. Watch as he shows the Jeeps who's BOSS in the snow: Clearly weight in the back is not a detriment at the least. If he can haul ~21,000 lbs plus pull a Jeep that's basically dead weight...

The "12v gremlins" is an appropriate name. From what I've seen on my 2008, the grounds points are one of the biggest issues. The factory coated everything in THICK CARC paint and then used star washers to pierce the paint coating and make a ground. This is valid but there was no use of...

With my NAPA commercial account the 7256 is $214. Given my personal experience is only with the stuff I worked on 20 years ago (gen sets [my 52D MOS], M35's, 800, 900 series trucks and HMMWV's) and my current 2008 A1R with the 260 amp alternator, I would think that two of these would be more...

I'm just going off the GVW listed on the passenger door data plate. Not sure on my curb weight but the weight listed on the AAR van box is "Tare Wt 3,360", "Gross Wt 8,360", and "Net Wt 5,000" I'm sure the A1R truck weighs more than the A0 trucks by a fair bit. The high pinion rear axle, the...

My shop is in Portland, OR. I'm not specifically a truck shop (we build race cars mostly) but I do own a 2008 LMTV, and I'm a former 52D generator mechanic in the Army - was attached to motorpool and worked mostly on trucks and HMMWV's, and I'm pretty well versed in the charging system on these...

My 2008 1079 A1R has 4 leafs in the front and rear springs. Also has front coil-over shocks for the never-installed armored cab. It may simply be that the A1+ trucks changed to a 4 leaf pack on all models. Might be a matter of the 3 leaf having thicker leaves and there not being any real...

I agree - for some situations they would be ideal. But you basically need a dedicated truck to mount that cab on. The way it's built it's essentially impossible to have the expansive windshield with the amazing view and the blast shutters - they operate from a control on the pillar between the...