Need help on pulley issue - The 1947 - Present Chevrolet & GMC Truck Message Board Network

jbgroby · 01-31-2009, 07:24 PM

I've been able to get a set of double groove pulley's that are for my '60 GMC The upper pulley (waterpump) simply bolts on with no problem.

However, the lower double groove pulley has to be attached to the crank shaft (which you then press on the shaft as normal) How would I go about removing the factory single grove and replacing it with the double groove?

Anybody done this before?

Here is the webshots link for the pictures.

http://good-times.webshots.com/album/569867634SqCRUH

The forsy pictures is the oem single I need to remove off the shaft ans replace with the double groove in the the pictures.

Thanks Jake

502tripower · 01-31-2009, 08:45 PM

Jake, It is very difficult to see whats going on with the pictures you posted. It does look like there are two rivets that are holding the single grove pulley to the harmonic balancer. If that is the case I would have this swap done by a professional shop that specializes in rebuilding dampeners. I have used these guys a few times and have been very happy with their services and price. They have a two day turnaround from the time they receive your part to the time it ships back out. The last thing you want to do is damage either the pulley or balancer or, worse have it come apart while operating the vehicle. Good Luck. http://www.damperdudes.net/

jbgroby · 01-31-2009, 09:39 PM

Thanks, the rivits are holding the harmonic blancer to the shaft. the pulley is some way stamped on but I will contact the company you mentioned THANKS

Jake

joe231 · 02-01-2009, 12:37 AM

looks to me like the pulley is just pressed on the balancer shaft....there are over sized holes to fit around the rivets.
you could try taking it to a local shop to get it pressed off and back on...
one of those large bearing splitters and a press might do the trick.

**Captainfab** · 02-01-2009, 12:43 AM

What engine are you working on?

joe231 · 02-01-2009, 12:46 AM

305 v-6

502tripower · 02-01-2009, 01:08 PM

Quote:

Originally Posted by joe231

looks to me like the pulley is just pressed on the balancer shaft....there are over sized holes to fit around the rivets.
you could try taking it to a local shop to get it pressed off and back on...
one of those large bearing splitters and a press might do the trick.

Another reason for having a professional damper shop do this is if the surface for the seal has any wear they will address this as well. JM2 cents.

joe231 · 02-01-2009, 01:50 PM

jbgroby · 02-01-2009, 04:44 PM

OH DUH!!

I has been so long since I had fooled with the harmonic balancer I had forgot that the pulley is simply pressed down and THEN held in place by 6 5/8" bolts. I feel like a DOPE.

I simply yused a large flat blade screw driver and popped off the single groove, pressed down the double groove and incerted the new bolts.

I must be geting too old for this stuff.

Jake

joe231 · 02-01-2009, 05:45 PM

01-31-2009, 07:24 PM	#1
jbgroby Registered User Join Date: Nov 2008 Location: Lacombe, LA Posts: 2,772	Need help on pulley issue I've been able to get a set of double groove pulley's that are for my '60 GMC The upper pulley (waterpump) simply bolts on with no problem. However, the lower double groove pulley has to be attached to the crank shaft (which you then press on the shaft as normal) How would I go about removing the factory single grove and replacing it with the double groove? Anybody done this before? Here is the webshots link for the pictures. http://good-times.webshots.com/album/569867634SqCRUH The forsy pictures is the oem single I need to remove off the shaft ans replace with the double groove in the the pictures. Thanks Jake Attached Images __________________ http://s1299.photobucket.com/user/jb...23904108567829

01-31-2009, 08:45 PM	#2
502tripower Registered User Join Date: Jan 2008 Location: Satsop, WA Posts: 606	Re: Need help on pulley issue Jake, It is very difficult to see whats going on with the pictures you posted. It does look like there are two rivets that are holding the single grove pulley to the harmonic balancer. If that is the case I would have this swap done by a professional shop that specializes in rebuilding dampeners. I have used these guys a few times and have been very happy with their services and price. They have a two day turnaround from the time they receive your part to the time it ships back out. The last thing you want to do is damage either the pulley or balancer or, worse have it come apart while operating the vehicle. Good Luck. http://www.damperdudes.net/ __________________ 1963' Chev Custom Cab 502, 67' 435hp 3X2 intake, 9" 4:30 Posi 1961 Impala SS 348/350 4-speed 3:70 Posi 1961 Bel-Air Bubble Top 283 Turboglide soon to have a 348 3X2 4-speed 1950 17' Fairliner twin cockpit barrel stern 312 Y block 1X1 intake Borg Warner 1:1 gear 1957 Fleetform 14' twin cockpit barrel stern 1969 BP-125 Merc 1949 Transitier 3-wheel forklift Crosley 4-Banger 98' FXD 2002 2500HD Last edited by 502tripower; 01-31-2009 at 08:49 PM.

01-31-2009, 09:39 PM	#3
jbgroby Registered User Join Date: Nov 2008 Location: Lacombe, LA Posts: 2,772	Re: Need help on pulley issue Thanks, the rivits are holding the harmonic blancer to the shaft. the pulley is some way stamped on but I will contact the company you mentioned THANKS Jake __________________ http://s1299.photobucket.com/user/jb...23904108567829

02-01-2009, 12:37 AM	#4
joe231 Registered User Join Date: Dec 2007 Location: Palmer, Alaska Posts: 13,821	Re: Need help on pulley issue looks to me like the pulley is just pressed on the balancer shaft....there are over sized holes to fit around the rivets. you could try taking it to a local shop to get it pressed off and back on... one of those large bearing splitters and a press might do the trick. __________________ *CHEVY ONLY* Last edited by joe231; 02-01-2009 at 12:38 AM.

02-01-2009, 12:43 AM	#5
Captainfab 60-66 Nut Join Date: Mar 2007 Location: Coeur d'Alene, Idaho Posts: 23,252	Re: Need help on pulley issue What engine are you working on? __________________ Power Steering Box Adapter Plates For Sale HERE Power Brake Booster Adapter Brackets For Sale '63-'66 HERE and '67-'72 HERE and '60-'62 HERE and "60-'62 with clutch HERE Rear Disc Brake Brackets For Sale. Impala SS calipers HERE Camaro Calipers HERE D52 Calipers HERE 6 Lug HERE Hydroboost Mounting Plates HERE

02-01-2009, 12:46 AM	#6
joe231 Registered User Join Date: Dec 2007 Location: Palmer, Alaska Posts: 13,821	Re: Need help on pulley issue 305 v-6 __________________ *CHEVY ONLY*

02-01-2009, 01:50 PM	#8
joe231 Registered User Join Date: Dec 2007 Location: Palmer, Alaska Posts: 13,821	Re: Need help on pulley issue __________________ *CHEVY ONLY*

02-01-2009, 04:44 PM	#9
jbgroby Registered User Join Date: Nov 2008 Location: Lacombe, LA Posts: 2,772	Re: Need help on pulley issue OH DUH!! I has been so long since I had fooled with the harmonic balancer I had forgot that the pulley is simply pressed down and THEN held in place by 6 5/8" bolts. I feel like a DOPE. I simply yused a large flat blade screw driver and popped off the single groove, pressed down the double groove and incerted the new bolts. I must be geting too old for this stuff. Jake __________________ http://s1299.photobucket.com/user/jb...23904108567829

02-01-2009, 05:45 PM	#10
joe231 Registered User Join Date: Dec 2007 Location: Palmer, Alaska Posts: 13,821	Re: Need help on pulley issue __________________ *CHEVY ONLY*

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