Thread: Dunlop or Hitachi compressors

When you done the compressor rebuild did you replace the plastic cap that the 2 airlines come out of on the top. From what i could see with mine and from reading many other threads , its the cap that is the main culprit most of the time as it develops hair line cracks between the 2 airline fittings. Some people have had success covering the cap in an epoxy glue like 5min araldite but i wasnt as lucky so needed to get a new cap after having done the initial rebuild.

I bought a hitachi off another member as it was a straight bolt in and the original lasted 9 years , and was still operating except the leaking cap caused the same issue you have.

Have you tried spraying soapy water on the compressor and fitting when its running to see whare the air is leaking from ? this would be my first option as you possibly could have a leak elsewhere , altho it sounds unlikely.

Cheers Ean

hey Ean i too read that but i didn't replace it as i had already purchased the the service kit without the cap. i was going to jump under the car tonight and spay soapy water and see if there are any bubbles.
so you still have the Hitachi compressor or did you go to a AMK model.

From what i have read the AMK doesnt seem to last as long as the hitachi,i'm still on the original at 11+ years and 175k so its doing well.
Unless the motor is burnt out you should be able to rebuild it to bring it back close to new, do you have the error codes for the current fault ?

I stayed with the hitachi as 1 was selling at the time on the forum and i was about to do a trip so i.purchased that incase my new cap didnt arrive in time - which it didnt. I replaced the cap when i returned and fitted the old compressor which hasnt leaked since.

I know the AMK unit is meant to be the bee knees but i could justify the extra cost on a 9 yr old car that the original lasted 9 yrs and as it turns out is still going after a rebuild. Also check where the hoses go into the fittings , i ended up having to cut 1 of my hoses so just got some connectors and hose from enzed for less than $10.

Cheers Ean

Originally Posted by loanrangie

From what i have read the AMK doesnt seem to last as long as the hitachi,i'm still on the original at 11+ years and 175k so its doing well.
Unless the motor is burnt out you should be able to rebuild it to bring it back close to new, do you have the error codes for the current fault ?

i can get the code and good to her about the longevity of the Hitachi compressors as i mentioned the first one has been OK for the last 8 years.

So, can you still buy the Hitachi genuine original or is it Dunlop brand after market now?

Originally Posted by Ean Austral

I stayed with the hitachi as 1 was selling at the time on the forum and i was about to do a trip so i.purchased that incase my new cap didnt arrive in time - which it didnt. I replaced the cap when i returned and fitted the old compressor which hasnt leaked since.

I know the AMK unit is meant to be the bee knees but i could justify the extra cost on a 9 yr old car that the original lasted 9 yrs and as it turns out is still going after a rebuild. Also check where the hoses go into the fittings , i ended up having to cut 1 of my hoses so just got some connectors and hose from enzed for less than $10.

Cheers Ean

Ean
i will spray all around the hoses and compressor to see if there are any leaks and if there is try to fix them if that doesn't work i can get a Hitachi compressor from LR center in the UK. thanks for the ideas to problem solve this my indy wanted to charge me $2500 for a AMK compressor change over.
cheers Adam

Originally Posted by Ean Austral

I stayed with the hitachi as 1 was selling at the time on the forum and i was about to do a trip so i.purchased that incase my new cap didnt arrive in time - which it didnt. I replaced the cap when i returned and fitted the old compressor which hasnt leaked since.

I know the AMK unit is meant to be the bee knees but i could justify the extra cost on a 9 yr old car that the original lasted 9 yrs and as it turns out is still going after a rebuild. Also check where the hoses go into the fittings , i ended up having to cut 1 of my hoses so just got some connectors and hose from enzed for less than $10.

Cheers Ean

Originally Posted by PerthDisco

So, can you still buy the Hitachi genuine original or is it Dunlop brand after market now?

i believe it is Hitachi branded see link to the item you may be able to tell me if this a actual Hitachi it looks the same
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