Need Some Help From You Military Truck Guys...

[missionkraft]

I need some info on a Spicer 6453 transmission common on the bigger 5 Ton military trucks...anyone familiar with them? My Autocar had a Spicer 6452 direct drive. My trucks never going back into serious work & so I decided to swap it for the 6453 which I was told was identical except gear ratios were faster & 5th gear OD instead of direct on the 6452.
So theres 4 or 5 fittings on the shift cover with plastic plugs in them. The 6452 doesnst have this & I have no idea what theyre for??
Any help greatly appreciated.
Here’s a picture of a 6453. Note the plastic cap plugs...what gets plumbed into here...what does it do & where can I get a schematic?

 

[Iceman3005]

Thats the air supplies for the transfer case.

Sent from my SM-G975U using Tapatalk

 

[fasttruck]

The valving operates air controls that orient the transfer case as to which direction the transmission is going which is part of the all wheel drive process. This is why the transmission has to be in a gear that matches the direction of travel or you will wind up the sprag in the transfer case which is usually not a good thing. This is why it is difficult to put civi transmissions in these vehicles unless you are willing to sacrifice the all wheel drive and then what is the use of having one ?

 

[TGP (IL)]

Marty,

Welcome aboard,

Don't worry about that valve in your application.
As mentioned it's for the T-case control which your not using.
Put more permanent plugs in and roll on.
Tom

 

[missionkraft]

Marty,

Welcome aboard,

Don't worry about that valve in your application.
As mentioned it's for the T-case control which your not using.
Put more permanent plugs in and roll on.
Tom

 

[missionkraft]

Thanks a million Tom! I kind of thought they could be plugged but I’d rather ask questions first than start repairing later
I finally finished fabricating my new battery box for her...what yee thinks?

 

[TGP (IL)]

Like the rest of the truck
It's First Class!
Tom

 

[m715mike]

@missionkraft, do you have a picture of the whole truck that you can post?

 

[missionkraft]

@missionkraft, do you have a picture of the whole truck that you can post?

Hi Mike, this is one of my more recent ones. Still lots to do!

 

[Mullaney]

Hi Mike, this is one of my more recent ones. Still lots to do!

Wow! (That says it all). Very impressive build...

.

 

[missionkraft]

Wow! (That says it all). Very impressive build...

.

I started on it thinking it wouldn’t be any more work than a passenger truck...just bigger parts.
I was wrong
It’s been a lot of work. Very difficult to find parts for and after a million or 2 miles rattling down the road...the amount of wear on everything in that time is just shocking.
At least I can see the end now.

 

[frank8003]

Spicer TTC 6453-A 5 speed transmission parts breakdown manual.

Spicer TTC 6453-A 5 speed transmission parts breakdown. Free PDF manual for Spicer Transmissions. We have Spicer transmission parts for sale.

www.pgttruckparts.com

 

[JD4044M]

Welcome Marty this is Willy-N off the PW Site. Here is my new Toy 1995 M1078 2 1/2 ton. I am "JD4044M" on here my New John Deere Tractor's Model Number. Mark

 

[TGP (IL)]

Nice truck Mark.
Figured you were probably over here .
Tom

 

[missionkraft]

Nice truck Mark.
Figured you were probably over here .
Tom

Welcome Marty this is Willy-N off the PW Site. Here is my new Toy 1995 M1078 2 1/2 ton. I am "JD4044M" on here my New John Deere Tractor's Model Number. MarkView attachment 822620

Hi Mark, good looking machine! You need a big water pump for it? You know me...nobody has more spare water pumps than me
Marty

 

[JD4044M]

I would if I wasn't 69 yrs old! Retired from fighting Wildfires and sold my Water Tender a while back. I like your truck!! Super Clean as usual!! Keeping mine stock if I can runs great.