Z482 in an APU

[TnTrucker]

I have a carrier APU powered by a Z482 kubota engine- I have a crack in the thermostat housing- but looking at it there’s a bolt behind the housing the water pump mounts into- looks like that housing is part of the front cover assembly- do I really have to pull all that off to get to 1 bolt to change out the thermostat housing???

thanks for any help

 

[North Idaho Wolfman]

Would need a picture of what your dealing with as I don't have a readily available manual for that engine

 

[TnTrucker]

From what I’ve found so far- looks like either pull the head or drop the oil pan and pull the front cover- as much as I don’t want to if that’s the only two ways I’m thinking pull head- I’m just hoping there’s some truck I’m not finding to get this housing off without doing either

 

[North Idaho Wolfman]

Thanks for the pictures!
Yes you will have to either pull the head or pull the gear case (timing cover).
On most of these it's easier to pull the head, less parts to have to remove to get to it.

 

[TnTrucker]

Thanks for that, yes you will have to either pull the head or pull the gear case (timing cover).
On most of these it's easier to pull the head, less parts to have to remove to get to it.

that’s what I did- of course my local Kubota couldn’t look up the parts because it’s not in a tractor- had to order the new thermostats housing and a head gasket from Carrier in Nashville 100 miles away-

but I’m getting it figured out- now just need to find the specs to reinstall the head- torque setting and pattern for the bolts- and the valve adjustment setting and torque-

lots of fun

 

[North Idaho Wolfman]

Sent you a file, look top right at the envelope.

 

[TnTrucker]

Sent you a file, look top right at the envelope.

Your awesome- Thanks

 

[TnTrucker]

Sent you a file, look top right at the envelope.

looking threw that file it looks like the head bolts are set at 28-32ftlbs- but I can’t find the torque pattern in that file- I’m guessing it’s the normal zig zag from middle to outer probably but if you have that info that would be awesome

thanks for the help BTW-this old trucker much appreciates it

 

[North Idaho Wolfman]

looking threw that file it looks like the head bolts are set at 28-32ftlbs- but I can’t find the torque pattern in that file- I’m guessing it’s the normal zig zag from middle to outer probably but if you have that info that would be awesome

thanks for the help BTW-this old trucker much appreciates it

Let me dig in and see if I can find it.
ON 99% of Kubota's it's start in the middle and work out