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(Moderator:
Nick Badame Refrig/ACC
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8v71 Compressor Drive
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Topic: 8v71 Compressor Drive (Read 6193 times)
travlinman
Full Member
Posts: 230
8v71 Compressor Drive
«
on:
December 07, 2012, 05:52:05 PM »
Hey Guys
Well I'm finally in a spot where I am able to pull my engine air compressor. All is going well except for one question I have. There is a washer/spacer between the engine gear and the compressor gear drive. This part is showing some wear and I'm wondering if I should replace it?
If it needs to be replaced what is it called? Where can I get one?
I went to the local DD dealer and they were less than worthless, so any help on this would be appreciated.
Pics attached
Cheers
TM
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Steve & Kristen Full time nomads since '06 - PD4106-674 8V71/V730
This bus is for sale -
https://gm4106.wordpress.com
OneLapper
Hero Member
Posts: 861
Re: 8v71 Compressor Drive
«
Reply #1 on:
December 07, 2012, 07:32:18 PM »
Can the gear be reinstalled in the opposite direction so the wear is on the better (trailing) side of the teeth?
I just scrapped two engines. Wish I kept some more parts.
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OneLapper
1964 PD4106-2853
www.markdavia.com
travlinman
Full Member
Posts: 230
Re: 8v71 Compressor Drive
«
Reply #2 on:
December 07, 2012, 08:01:18 PM »
Just to be clear, the part I am talking about is the small ring in the photo.
The drive gear does appear to be reversible.
TM
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Steve & Kristen Full time nomads since '06 - PD4106-674 8V71/V730
This bus is for sale -
https://gm4106.wordpress.com
luvrbus
Hero Member
Posts: 26068
Re: 8v71 Compressor Driveou
«
Reply #3 on:
December 07, 2012, 08:35:38 PM »
Me I would change the drive over to the new style that one is sloppy no matter what you do
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Life is short drink the good wine first
travlinman
Full Member
Posts: 230
Re: 8v71 Compressor Drive
«
Reply #4 on:
December 07, 2012, 08:54:52 PM »
OK Clifford I was thinking you would have a good idea for me.
As far the new drive goes, who is a good source?
TM
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Steve & Kristen Full time nomads since '06 - PD4106-674 8V71/V730
This bus is for sale -
https://gm4106.wordpress.com
wg4t50
Hero Member
Posts: 913
Re: 8v71 Compressor Drive
«
Reply #5 on:
December 08, 2012, 02:11:09 AM »
Speaking of drive gears, do not forget the "Dog Bone", they will let you sit, takes a mechanic to replace it, so if you have an older 8V-71 with the fine teeth, I would have a look see while your at home. More than one have been towed and few mechanics recognize the issue, some spend many hours before they find it. Very simple the blower and fuel pump stop turning
Most rebuilds I have seen, this drive gear is never looked at, just reinstalled IF they had the blower off. Seems rebuilds are quick cylinder kits and bearings. For me, every nut and bolt, plug, oil & water is removed and block is steam cleaned. When quality counts
Dave
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MCI7 20+ Yrs
Foretravel w/ISM500
WG4T CW for ever.
Central Virginia
Boomer
Hero Member
Posts: 1104
Re: 8v71 Compressor Drive
«
Reply #6 on:
December 08, 2012, 08:59:54 AM »
Hillsboro Diesel, Steve. Forget about Pac Diesel and go with Rick and Ozzie for everything you need, new or used.
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'81 Eagle 15/45, NO MORE
'47 GM PD3751-438, NO MORE
'65 Crown Atomic, NO MORE
'48 Kenworth W-1 highway coach, NO MORE
'93 Vogue IV, NO MORE
1964 PD4106-2846
Vancouver, WA USA
Geoff
Hero Member
Posts: 1931
Re: 8v71 Compressor Drive
«
Reply #7 on:
December 08, 2012, 10:22:25 AM »
There is also a plastic air compressor drive available. If it happens to break, it won't take out your gear train like the metal one can. That warpy washer is to keep tension on the drive so it won't chatter.
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Geoff
'82 RTS AZ
chessie4905
Hero Member
Posts: 7101
Re: 8v71 Compressor Drive
«
Reply #8 on:
December 08, 2012, 05:18:48 PM »
My 4905 parts book lists this as Group 4-56 AIR COMPRESSOR DRIVE-Part #2355613-SPRING-damper, drive coupling
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GMC h8h 649#028 (4905)
Pennsylvania-central
luvrbus
Hero Member
Posts: 26068
Re: 8v71 Compressor Drive
«
Reply #9 on:
December 08, 2012, 05:26:36 PM »
They are also called a disk wave washer or constant tension washer I saw a big selection at Lowes of all places
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Life is short drink the good wine first
travlinman
Full Member
Posts: 230
Re: 8v71 Compressor Drive
«
Reply #10 on:
December 09, 2012, 09:34:18 PM »
Right On!
Now that is some good info, thanks to everyone who responded. Now I know what I am looking for.
Thanks!
TM
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Steve & Kristen Full time nomads since '06 - PD4106-674 8V71/V730
This bus is for sale -
https://gm4106.wordpress.com
sdc53
Full Member
Posts: 112
Re: 8v71 Compressor Drive
«
Reply #11 on:
December 10, 2012, 07:42:52 PM »
x2 what boomer says. They'll have the right part on the shelf.
Scott
'69 4107
Gladstone, OR
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Scott
Gladstone, OR
1969 PD4107
travlinman
Full Member
Posts: 230
Re: 8v71 Compressor Drive
«
Reply #12 on:
December 11, 2012, 04:21:07 PM »
Parts ordered from Hillsboro Diesel today. Super helpful and knowledgeable about two strokes, one look at what I have and they had parts picked and ready to ship!
TM
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Steve & Kristen Full time nomads since '06 - PD4106-674 8V71/V730
This bus is for sale -
https://gm4106.wordpress.com
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8v71 Compressor Drive
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