Pully removal on a Denso Comp (Prado)
Submitted: Thursday, Nov 03, 2011 at 19:31
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Member - Joe n Mel n kids (FNQ
Hi "all".... i have a seized bearing on the ac compressor on my Prado, it is the denso compressor, fairly common, and i am hopeing i can remove the clutch and pully/bearing whilst still mounted in situ, the reason for that is i can retain the gas as it still has gas, if only i could get it done at a workshop i would but the nearest is
Mount Isa 500klms away so i will try ANYTHING first ....
Now i have done them before but on an earlier model/type car and different comp, this one has a small 10mm bolt retaining the clutch to the main shaft, in theroy you remove the bolt and the clutch slides off, access the bearing after removing the circlip ........ i have removed the 10mm bolt but can not budge the clutch, i have managed to buy a s/h compressor off e-bay and even found a very good u-tube vid on the complete strip and re-build and they simply slide it off ...
mine will not budge so i tried the e-bay one and it is the same, now i have discovered that it has a slightly larger thread tapped into the clutch around the hole the 10mm bolt goes into, this leads me to assume there is a puller assy for it..... thread is on the clutch assy, bolt thread is in the comp shaft ......so is anyone able to shed some light on how it comes off, i really dont want to have to send the car in just for the bearing .. am checking l-cool but no luck so far, i dont have muck luck with there search engine
Ta in advance (again)
Joe
Reply By: Member - tojofixa - Thursday, Nov 03, 2011 at 19:44
Thursday, Nov 03, 2011 at 19:44
Hi, Joe
The thread inside the compressor clutch is indeed for a puller
I have had success getting these clutches of by screwing a bolt of the correct size & thread into the thread in the clutch pulley, applying pressure to the bolt while giving the head of the bolt a sharp tap with a soft faced hammer.
The clutches are mounted on a taper and the tap on the bolt them.
Hope this is of some help,
Regards. Derek
AnswerID:
469147
Follow Up By: Member - tojofixa - Thursday, Nov 03, 2011 at 19:45
Thursday, Nov 03, 2011 at 19:45
Should read, normally release them
FollowupID:
743482
Follow Up By: Begaboy - Thursday, Nov 03, 2011 at 19:54
Thursday, Nov 03, 2011 at 19:54
this site need a like button ---- just be carefull of where the bolt screws into ( to push from ) make sure its not into soft metal like alloy
FollowupID:
743484
Follow Up By: Member - Joe n Mel n kids (FNQ - Friday, Nov 04, 2011 at 10:21
Friday, Nov 04, 2011 at 10:21
so if a "taper" it should come off with a small tap as you say but i cant budge either one .???
Thanks for the reply eh, i will keep on trying
FollowupID:
743514
Reply By: Member - Toyocrusa (NSW) - Thursday, Nov 03, 2011 at 19:51
Thursday, Nov 03, 2011 at 19:51
Hi Joe. I haven't done your particallar Denso for a while but I am pretty sure the driven plate should come off once the centre bolt is removed. Sometimes they bind to the spline and sieze a bit hence the puller thread around the centre. Are you able to get a couple of thin screw drivers into
the gap and maybe try to wiggle them a bit. It may start to move the driven plate out off the spline. If it won't move it is possible it is an interference fit on the spline which will definately mean a puller. Good luck, hope that helps. Cheers,Bob
AnswerID:
469149
Follow Up By: Member - Joe n Mel n kids (FNQ - Friday, Nov 04, 2011 at 10:26
Friday, Nov 04, 2011 at 10:26
Thanks ... Tojofixa above has said it is a taper fit so i would think it will come away with a tap...
I have tried the screwdrivers to wiggle it, i was hoping it would "flex" it and break the bond but no luck so far....
Think i am gunna have to try to make up a puller, it has one single small bolt thread in the center to pull from so it tells me it can not be on very tight but still a risky method to extract it..
Cheers n thanks
FollowupID:
743516
Reply By: Member - Charlie M (SA) - Thursday, Nov 03, 2011 at 21:40
Thursday, Nov 03, 2011 at 21:40
Hi
The puller is like two bolts outside one screws into front shoe, and internal one screws in to make contact with shaft and then proceeds to pull shoe of shaft as it is wound in. Don't hit centre bolt that is touching shaft as this can do major internal damage.
Threads will be metric
Cheers
Charlie
AnswerID:
469158
Follow Up By: Member - Joe n Mel n kids (FNQ - Friday, Nov 04, 2011 at 10:31
Friday, Nov 04, 2011 at 10:31
thanks Charlie, i will try to make one up, must be a very small puller and specific to doing these eh..
Cheers and thanks for the replys
FollowupID:
743518
Reply By: Member - Murray R (VIC) - Thursday, Nov 03, 2011 at 22:19
Thursday, Nov 03, 2011 at 22:19
Joe
You need a special puller to remove the clutch hub from the compressor. its a has the thread that screws into the hub with a internal bolt that screws though it which press's on the shaft and pulls the hub off.If you can not get the hub off without the puller. If you do happen to get it off, make sure that the compressor bearing spigot is not worn as it usually does with a seized bearing.
Hope this might help
Murray
AnswerID:
469163
Follow Up By: Member - Joe n Mel n kids (FNQ - Friday, Nov 04, 2011 at 10:29
Friday, Nov 04, 2011 at 10:29
can you do the spigot bearing from external without letting the gas go ???
Cheers
Joe
FollowupID:
743517
Follow Up By: Member - Joe n Mel n kids (FNQ - Friday, Nov 04, 2011 at 10:40
Friday, Nov 04, 2011 at 10:40
i am assuming the "spigot" bearing is the front support bearing on the shaft ... my guess, and i will have to do a re build.
Bummer, i may just have to re build the e-bay unit and change it out and send the car in on the next truck to get gassed up...
Argh ... dont you love being remote ... priceless ..
Compressor ..$130
Re build kit ..?? probally $100 bucks
Freight car to town ....$600
Re gas ..... guess say $150
Get car back ... $600\
Bout $1500 bucks just cause i am a sook and love having an air conditioned car ..
Oh
well get over it Joe, you choose to live remote so stop sooking hahaha
FollowupID:
743520
Follow Up By: Member - Murray R (VIC) - Friday, Nov 04, 2011 at 17:23
Friday, Nov 04, 2011 at 17:23
Joe
The spigot that I'm talking about is the part on the front of the compressor that the pulley bearing mounts onto. If you look up and see weather there is a Ashdowms in
Darwin they sell the puller you need for about $100. Just ask for a clutch puller for a denso compressor as its listed in their AC parts catalog. the raeson you need the puller is that the hub is pushed on about 15mm with a woodrough key. If you can get the puller use it to refit the hub by screwing it into the hub and GENTLY tapping it back on until there is enough thread on nut or screw to pull it up the rest of the way home.
This might save you heaps, worth a phone call
Murray
FollowupID:
743548
Follow Up By: Member - Joe n Mel n kids (FNQ - Friday, Nov 04, 2011 at 20:59
Friday, Nov 04, 2011 at 20:59
Thanks for the reply Murray, i made up a grease nipple setup and it worked a treat, this one is splined and had rusetd on, man it was tight but few pumps of grease and off it came ....
Cheers
Joe
FollowupID:
743569
Reply By: Sea-Dog - Friday, Nov 04, 2011 at 10:17
Friday, Nov 04, 2011 at 10:17
You will probs find that the snout (end part the bearing runs on) is made of alloy and the bearing has spun on it.. which they do when they are seized... This generally causes the snout face to become chewed out and the clutch etc will not run true any longer.. when this is bad enough the clutch and pulley will flop around and will soon fail.
If this is the case the repair is major and will normally require replacement of the compressor or substantial repair to it... $$$$$$
AnswerID:
469192
Reply By: Member - Joe n Mel n kids (FNQ - Friday, Nov 04, 2011 at 14:37
Friday, Nov 04, 2011 at 14:37
well after reading all comments above, and many thanks for all input, i have a plan, i will get a 1" long bolt of the correct thread, drill the center out to accept a grease nipple, i will screw it in, probally use some thread tape to enforce the sealing and attach the grease gun and gently pump in grease allowing the air to escape and .......
my theroy is the "hydraulic" pressure will push it away from the shaft and being grease will not damage anything, i have done the same to remove spigot bearings and it works really
well........... and if it works it will be a VERY effective and simple method to remove it and will work
well in the confined space..
So what do ya's reckon, will it work?????
Cheers
Joe
AnswerID:
469203
Follow Up By: Member - Joe n Mel n kids (FNQ - Friday, Nov 04, 2011 at 21:03
Friday, Nov 04, 2011 at 21:03
it worked, and worked a treat, it turns out the shaft is splined , no taper and no key way, it had rusted on so was VERY tight ... that was the e-bay one, i will have a crack at the one on the car tomorrow but will make it heaps easer.....
Cheers
Joe
FollowupID:
743571