Fried the pump on my Boxxer 421....How do I remove clutch from pump?

[Blue Monarch]

Was on a tile job yesterday and lost pressure. Went out to find my pump leaking oil. The plastic dipstick was even melted. That baby is fried.

Anyway, I'm trying to yank the thing, but I don't want to mess up the clutch when separating it from the pump. Any tips?

 

[bob vawter]

ya...remove the center bolt.....
then you'll see the large threads in the clutch 7/8 course (i believe)
screw in the 7/8 bolt till it pushes the clutch off....easy peasy!

you'll need me when yor ready to put it back on too...or you'll mess it up sure!

 

[Blue Monarch]

I'll look again....didn't see a center bolt. Didn't have great light today.

 

[bob vawter]

careful when screwing the 7/8 bolt in...make sure the thread matches some are different

 

[dgardner]

Bawb, the Hyramaster manual suggests this one has two setscrews (item #17) on the shaft instead of a center bolt.... could be?

View attachment 4346

 

[Blue Monarch]

sweet. thank you sir! I'm guessing I'll have more questions when I get elbow deep into it.

 

[bob vawter]

never seen that ...how does it say to set the clearance upon reassembly......

 

[hydracat]

Is that hexagonal thing on the bottom the chem feed? I never had one of those on my cat 290 or 270. probably cause there dino's.

 

[Charlie Lyman]

I used a gear puller on mine. There is no threads in the center bolt.


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[dgardner]

Is that hexagonal thing on the bottom the chem feed? I never had one of those on my cat 290 or 270. probably cause there dino's.

Yes, that's the chemical pump. I have a couple 290's myself, not aware of a last-step-style pump for them.

 

[dgardner]

never seen that ...how does it say to set the clearance upon reassembly......

It doesn't - good question...

 

[SMRBAP]

Get a good penetrant on those set screws - a few hours before you start work.

 

[bob vawter]

so the clutch doesn't set on a tapered shaft?

 

[dgardner]

Get a good penetrant on those set screws - a few hours before you start work.

Great idea. Anyone else here use Kano Lab's Kroil? It's absolutely magical when it comes to loosening rusted or otherwise stuck fasteners. I literally buy it by the gallon. They also have aerosol cans of the stuff.

View attachment 4349

 

[dgardner]

so the clutch doesn't set on a tapered shaft?

Here's a pic of a replacement Hydra Pump II - looks non-tapered to me:

View attachment 4350

 

[bob vawter]

everything i seD.....nevermind!

 

[GCCLee]

I'll look again....didn't see a center bolt. Didn't have great light today.

Ya might have to go to the Hardware store and get one.

I think it was 7/8 ? Luckily I got one with the van when we bought it. Keep it in your old clutch box!

Chris


Sent from da parking garage of dee detention center

 

[GCCLee]

Get a good penetrant on those set screws - a few hours before you start work.

Kroil Oil !!


Always have a can!!


Sent from da parking garage of dee detention center

 

[Blue Monarch]

Just put some penetrant on the set screws. I'll call HM to get the exact size so I don't strip 'em. Is the bastard supposed to slide right off after that, or do I need to screw in a bolt still to force it off? There is a threaded hole in the center of the clutch, but nowhere near 7/8

 

[Charlie Lyman]

Just put some penetrant on the set screws. I'll call HM to get the exact size so I don't strip 'em. Is the bastard supposed to slide right off after that, or do I need to screw in a bolt still to force it off? There is a threaded hole in the center of the clutch, but nowhere near 7/8

Call me. I've done this. 208-855-5715


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[SMRBAP]

Kroil is the best penetrant $ can buy.

If Kroil can't get it - it's torch, cut or drill time, because nothing else will.

 

[curt johnson]

Dirk, these guys all think you are mechanical. Quit while you're ahead and hire the job out.

 

[Desk Jockey]

I was impressed, he's doing more than I'd take on.

It helps with so many guys here that are knowledgeable and willing to help a rookie.

 

[Blue Monarch]

fake it till ya make it. calling Charlie right now!

 

[Desk Jockey]

Hey if you have the time and the patience why not.

Besides you're doing great so far. Lets see you burned up a pump and....well ok maybe "great" was a stretch.

 

[Jimmy L]

Take your truck into dultmeiers in millard.
Sit in the waiting room while they put a new pump in.

Cheaper than interlink.

 

[Jimmy L]

Or buy the pump/clutch combo already put together and put it in yourowndamnself.

From dultmeier

 

[Blue Monarch]

Go big or go home.....I fried it good!

 

[Charlie Lyman]

Just for everyone's future reference, this pump could have been bought at pressurewasherauthority.com for $275 delivered. They have a bunch of pumps. Only thing different is that it doesn't say hydramaster.


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[dgardner]

Just for everyone's future reference, this pump could have been bought at pressurewasherauthority.com for $275 delivered. They have a bunch of pumps. Only thing different is that it doesn't say hydramaster.


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For 275, I assume that's w/o clutch? Which part number corresponds to the HM pump? Good info!

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