Rigmaster APU problems

davekc · Feb 16, 2014

Be interesting to know of the Dallas place and what experience anyone has had. As for the Rigmaster and priming it, seems drivers struggle with that. In the past I just use wd40 to start them.
Seems many Speedcos have problems priming them as well. I think they get too much air in the head and that is where they have problems.

Dynamite 1 · Feb 16, 2014

davekc said:
Be interesting to know of the Dallas place and what experience anyone has had. As for the Rigmaster and priming it, seems drivers struggle with that. In the past I just use wd40 to start them.
Seems many Speedcos have problems priming them as well. I think they get too much air in the head and that is where they have problems.

Like I said, try the screws,easiest way to take care of the issue.

zorry · Feb 16, 2014

I serviced my rigmaster and never had an issue priming it. I would fill the filter.

jhead64 · Feb 16, 2014

We have had our rigmaster for two years now and never had a problem with it losing prime or being primed after service.

Our prior truck had a proheat and it constantly lost prime.

The main difference that I see between the two is how they were installed. The proheat had a line down into a fuel tank that it pulled its fuel from. Our rigmaster gets fuel directly from the fuel line with a tcheck valve. I don't know if I'm saying that right because I'm not mechanical but maybe you who are will understand what i mean.

After seeing the difference it makes I have to wonder why they aren't all installed that way?

Ours was purchased used and installed at i65 Chrome shop in Remington Indiana. Dale is the guy who deals with that stuff and could explain it better than me.

We were on the fence about buying an apu after all the problems with the proheat losing prime but he told us we wouldn't have that problem with the way they install and he was right.

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zorry · Feb 17, 2014

davekc said:
Seems many Speedcos have problems I think they get too much air in the head and that is where they have problems.

There, fixed it for you.

usafk9 · Feb 17, 2014

jhead64 said:
We have had our rigmaster for two years now and never had a problem with it losing prime or being primed after service.

Our prior truck had a proheat and it constantly lost prime.

The main difference that I see between the two is how they were installed. The proheat had a line down into a fuel tank that it pulled its fuel from. Our rigmaster gets fuel directly from the fuel line with a tcheck valve. I don't know if I'm saying that right because I'm not mechanical but maybe you who are will understand what i mean.

After seeing the difference it makes I have to wonder why they aren't all installed that way?

Ours was purchased used and installed at i65 Chrome shop in Remington Indiana. Dale is the guy who deals with that stuff and could explain it better than me.

We were on the fence about buying an apu after all the problems with the proheat losing prime but he told us we wouldn't have that problem with the way they install and he was right.

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That problem with your Proheat is solved with a $35 or so mechanical fuel pump. Realize a little late, but maybe useful for the next person reading this. It's right on the front of the engine, Two bolts, hose on each side. Ask me how I know. I dare ya.

revtabby14 · Feb 24, 2014

How do i prime my carrier apu...it cranks but won't start....

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usafk9 · Feb 24, 2014

Crack the nut on one of your injector lines. If fuel spurts out while it's cranking, pump is okay. If not (assuming filters are clean and full), your fuel pump is toast.

Seriously, easy part to replace. Google Kubota Z482 parts. It's on the front of your engine.

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davekc · Feb 24, 2014

Might be your in line fuel filter. Has it been replaced? And if so, ensure the fuel filter is put in correctly. Filter has to be put in with arrow pointing the direction of the fuel flow. Some plaes put it in backwards.

revtabby14 · Feb 26, 2014

davekc said:
Might be your in line fuel filter. Has it been replaced? And if so, ensure the fuel filter is put in correctly. Filter has to be put in with arrow pointing the direction of the fuel flow. Some plaes put it in backwards.

Yep its been replaced....and paying 98$ for four times in a row to have it primed....looses its prime.....might be fuel pump....so how do i prime....for now till i can get to shop?

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zorry · Feb 26, 2014

Read post 68.

TeamHutch · Feb 26, 2014

There is a little priming lever just below the filter. Make sure the fuel line is open. Might be easier to remove filter bowl and fill manually. The lever is a pain in the ...

usafk9 · Feb 26, 2014

TeamHutch said:
There is a little priming lever just below the filter. Make sure the fuel line is open. Might be easier to remove filter bowl and fill manually. The lever is a pain in the ...

Filter bowl?

TeamHutch · Mar 2, 2014

Bowl, cup, clear plastic thing the fuel filter is in.

usafk9 · Mar 2, 2014

TeamHutch said:
Bowl, cup, clear plastic thing the fuel filter is in.

Isn't one on a Carrier.

TeamHutch · Mar 2, 2014

Thought you were talking about rm sorry

usafk9 · Mar 2, 2014

TeamHutch said:
Thought you were talking about rm sorry

All good. We're all here to learn.

On a side note, we're taking two trucks in for Proheat (Carrier) repairs tomorrow. Who knows? There may be a new APU in my future.

Jenny · Mar 24, 2014

Does anyone have a link for the carrier comfort pro apu? Our friend has one with no namual.

Thanks

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usafk9 · Mar 25, 2014

Jenny said:
Does anyone have a link for the carrier comfort pro apu? Our friend has one with no namual.

Thanks

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