Diesel Road compressor help

[Deere 6430]

We have an ingersoll rand diesel road compressor but have a cooling problem. Should the engine fan draw air across the engine and PUSH it through the radiator ie the oppsi to a standard vehicle or should it PULL air through the radiator?

I have a feeling the fan is not correct as it looks as if someone has fitted a newer fan at some point and that’s why it is maybe getting hot. H fan doesn’t look quite right.

im leaning towards the PUSH option as on a building site it wouldnt be pulling so much dust etc through the radiator

turning the fan around is not an option so I can’t try it easily you can get fans that are either pusher or puller types

any help would be great, I don’t know anyone else with one to start up and try, I presume all are the same setup, I know they don’t like running with the hoods up as they can overheat according to the manual.

 

[davidroberts30]

Think my hydrovane is a push type as you said

 

[Sparkplug]

I have a 731 IR - will have a look in the morning

 

[Dave W]

I service a 7-71. That blows through the rad into a cavity behind that also has the exhaust outlet

 

[Deere 6430]

Thank you yes I think that it must have to push the air through the radiator to the outside to work correctly.

 

[mtx.jag]

Is that with the liquid cooled Yanmar engine?

 

[Deere 6430]

No a liquid cooled Perkins engine.

 

[5020man]

I have an atlas copco with deutz oil cooled diesel with pusher fan.
Turning the fan around will have no effect on air flow.

 

[mtx.jag]

No a liquid cooled Perkins engine.

Is the oil level in the compressor itself up to the max level? Our old one baffled us,ran warm on a frosty day,even put new thermostat and water pump on it,did a full service on it and it never ran warm again,no idea was there oil filter blocked for the compressor and was causing resistance etc or was the oil just low and a bit old in the compressor

 

[Deere 6430]

Yes I think it must need a pusher fan.

 

[Deere 6430]

Oil is up to max and oil and filter are both new. Tried various things and have arrived at the fan as a last resort.

 

[glasshouse]

Oil is up to max and oil and filter are both new. Tried various things and have arrived at the fan as a last resort.

Air filter?

 

[Deere 6430]

Air filter is new too. We’ve tried everything we can think of but these compressors seem to be very complicated but if kit unless they are running spot on?

Although oil filter for compressor bit wasn’t genuine as no longer available but a good quality after market make. Same with the oil, Morris brand oil for compressor.

I think it’s the fan as not much air is being moved at all and radiator seems to be hot first. Radiator is clean on the outsides too.

 

[Deerefarmer]

Also may want to check that the rad is not choked internally with calcium deposits.

 

[Sparkplug]

My IR 731 has 3 cyl Yanmar Engine and a 6 Blade Pusher Fan

 

[Deere 6430]

thank you for the help so far

@Sparkplug could you post a photo of the fan and which way it rotates to help me identify mine is wrong. It’s a bit complicated but I think I’ve got it in my head what it should be like but a photo would be much appreciated

 

[davidroberts30]

thank you for the help so far

@Sparkplug could you post a photo of the fan and which way it rotates to help me identify mine is wrong. It’s a bit complicated but I think I’ve got it in my head what it should be like but a photo would be much appreciated

Your can only be wrong if it's not standard
If it's on back to front the angle is still the same

 

[Deere 6430]

No it isn’t the original fan hence why I’m trying to find what one might be like. It also depends on the rotation of the engine I’m told.

 

[Sparkplug]

The Blades are well angled as per the encl photo to push maximum air through radiator taking heat off the engine.View attachment scan0630.pdf

 

[MF-ANDY]

No it isn’t the original fan hence why I’m trying to find what one might be like. It also depends on the rotation of the engine I’m told.

If as you say its a perkins it will turn clockwise looking from the fan end