New to me M1088

As I'm pulling stuff off the Truck I was thinking of putting things up for sale on FleeBay to help offset the cost of the build. But then started thinking that I've already received so much help from the members here that why wouldn't I give you guys first crack at it. As things come off I'll throw some pics up and let me know what you need.

day late...... dollar short... few months back I needed all of that... still need some of it though but shipping would be killer from CA

what is the long rod bent on end in pic six for?

btw... what do you teach?

Yeah, that's life.... Would have had it 3 months ago maybe if GP didn't sit on my EUC for so long. I have no idea what the bent rod is. It was mounted right above the battery box, I assume its used for maneuvering the handles and pins on the fifth wheel hitch. Not looking forward to getting that thing off. Teach???? Oh, my username gradechecker... Ha I never though of it that way. I do civil construction and my old job title was grade checker because i translated survey to the guys building the roads. Kinda just stuck with me for the last 20 years.

gradechecker48 said:

I assume its used for maneuvering the handles and pins on the fifth wheel hitch.

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Yea has a hook on the end so I would guess for pulling the pin release on the plate. They can be nice thing to have.

Ok, making progress now that the virus has me quarantined at home. I got the Wtec 3 trans ecu repaired and it fired right up. now on to my newest issue. Air was leaking out of the front emergency glad hand. through some research on this site looks like I need a new valve. Got one ordered should be here next week. While i was letting it run and driving it around the block a few times i noticed a rusty colored liquid building up next to the leaky glad hand, so my guess is that the air dryer needs replacing?

gradechecker48 said:

I got the Wtec 3 trans ecu repaired and it fired right up.

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Did you have the push button controller on the dash fixed, or the trans ECU that resides under the passenger side kick panel?

gradechecker48 said:

i noticed a rusty colored liquid building up next to the leaky glad hand, so my guess is that the air dryer needs replacing?

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Have you opened the valves on the air tanks to drain them yet/ever?
See what you get there first.

DREDnot said:

Did you have the push button controller on the dash fixed, or the trans ECU that resides under the passenger side kick panel?

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The trans Ecu under the passenger side dash. Jultech fixed it and said looked like someone had tried to jump the truck and hit it with way too much power and it fried the components.

DREDnot said:

Have you opened the valves on the air tanks to drain them yet/ever?
See what you get there first.

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Opened all the tanks and a little moisture came out but nothing like I saw out of the glad hand. To be safe I disassembled the dryer, cleaned it well and washed and dried the media inside. I will reassemble it tomorrow

Anyone know what’s missing here, drivers side bell housing of the transmission?

gradechecker48 said:

Anyone know what’s missing here, drivers side bell housing of the transmission?View attachment 798587

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Never mind, just figured it out..... forgot I removed the ether bottle

Time for an update. I replaced the valve on top behind the washer fluid tank. Still didn’t fix the air leak. I ordered a new one way valve that goes behind the bumper and a few rebuild kits for the rest for them. The down time has given me the ability to get other projects done on the truck. Removed the rest of the things off the frame so I can start building the sub frame.
That fifth wheel hitch is stupid heavy.
Last thing that needs to be moved is the trans cooler, and clean up all the lines behind the cab. I relocated the hydraulic controls and pumps.
Re configured the battery box to give me room to put house batteries in there. Right now it’s just a piece of plywood, I will at some point make the tray out of steel / fiberglass.

the lid barely fits like this so I need to do something thinner. I ordered all the stuff to make the subframe so I’ll be starting that next week. I’ll try to keep the pics and updates coming as things get done

I started with my control box there but it's right where all the road debris and such will get tossed. I ended up moving it above where you have the pump on the tower I have for the air filters. Despite very few miles on it so far (and none off road), I am very glad I did it.

Pics in the build thread in my signature.

Chris

ckouba said:

I started with my control box there but it's right where all the road debris and such will get tossed. I ended up moving it above where you have the pump on the tower I have for the air filters. Despite very few miles on it so far (and none off road), I am very glad I did it.

Pics in the build thread in my signature.

Chris

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I was debating that thought. I might move it like yours once I get the air filters finished up.

gradechecker48 said:

View attachment 799281
the lid barely fits like this so I need to do something thinner. I ordered all the stuff to make the subframe so I’ll be starting that next week. I’ll try to keep the pics and updates coming as things get done

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What type of mount are you using for the subframe? 4 point, rail-in-rail with springs, ....? Any pictures of your design to share?


I am researching that now.

Thanks!


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ramdough said:

What type of mount are you using for the subframe? 4 point, rail-in-rail with springs, ....? Any pictures of your design to share?


I am researching that now.

Thanks!


Sent from my iPhone using Tapatalk

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IMHO the longer the chassis of the truck the more likely one needs a habitat box subchassis with 2 or more pivoting connection to truck chassis. Just captured spring on one end won't cut it like is done on the M1079.

How much longer is your chassis (if it is at all) than the 107x series FMTV's?

ramdough said:

What type of mount are you using for the subframe? 4 point, rail-in-rail with springs, ....? Any pictures of your design to share?


I am researching that now.

Thanks!


Sent from my iPhone using Tapatalk

Click to expand...

So the total length of the habitat will be 20’ that gives a 5’ over hang. The end of the 1088 rails are 15’8” from the cab. I will use 8” c channel solid mounted at the front with 2 spring mounts per side, one half way and 1 at the rear. Similar to how Acela makes there subframe. Have some random sketches done but nothing CAD. Not very good on the computer. I’ll post some pics as I get it built

gradechecker48 said:

So the total length of the habitat will be 20’ that gives a 5’ over hang. The end of the 1088 rails are 15’8” from the cab. I will use 8” c channel solid mounted at the front with 2 spring mounts per side, one half way and 1 at the rear. Similar to how Acela makes there subframe. Have some random sketches done but nothing CAD. Not very good on the computer. I’ll post some pics as I get it built

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Wow, that is a lot of overhang. I guess I am overhanging around the same, but I am extending my frame 36” then having a 24” rake angle.

I thought about springs like Acela, but I think the frame flexes more than they could normally take.

Right now I am evaluating the 4 point diamond style.


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ramdough said:

Wow, that is a lot of overhang. I guess I am overhanging around the same, but I am extending my frame 36” then having a 24” rake angle.

I thought about springs like Acela, but I think the frame flexes more than they could normally take.

Right now I am evaluating the 4 point diamond style.


Sent from my iPhone using Tapatalk

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That’s cool, 18’ of the floor will be flat, the last 2’ of it will have a 45 degree angle so I guess similar to what you’re thinking. I like the 4 point system and I think it’s a very good idea to go that route if you’re gonna use the frp panels like the total composite systems. I’m doing a steel skeleton with aluminum sheeting for the skin. Lots of rigidity.... we have 6 wheel drive military style water trucks at work that carry 32,000 pounds of water with a similar style of mount so I feel pretty confident with the spring mounts. Let me know the 4 point you come up with, I like to see all the different ways of doing it