GMCforum
For enthusiast of the Classic GMC Motorhome built from 1973 to 1978. A web-based mirror of the GMCnet mailing list.

Home » Public Forums » GMCnet » Inspecting rear bearings. ( Synpower or Penzoil red wheel bearing grease )
Inspecting rear bearings. [message #308074] Sat, 01 October 2016 09:41 Go to next message
JohnL455 is currently offline  JohnL455   United States
Messages: 4447
Registered: October 2006
Location: Woodstock, IL
Karma: 12
Senior Member
I have a slight drone in the rear starting at 63 MPH. Not powertrain speed related and 6 new tires did not change it. So--- I want to inspect and repack for piece of mind. Is the jury still saying Synpower is best for rear wheel bearings? I would think a bearing would be a growl or a rump rump starting at a much lower speed but you never know.

John Lebetski
Woodstock, IL
77 Eleganza II
Re: Inspecting rear bearings. [message #308075 is a reply to message #308074] Sat, 01 October 2016 09:50 Go to previous messageGo to next message
jhbridges is currently offline  jhbridges   United States
Messages: 8412
Registered: May 2011
Location: Braselton ga
Karma: -74
Senior Member
I packed the new ones in Synpower. Hadda remove to replace the wheel cylinders - which I should of done with the reaction arm - and all looks good still. One wheel cylinder leaking, one frozen, four new ones. From the heathen chinee, but that's what was available. Look just like what came off.
A note to brake cylinder repairmen with a reaction arm - hook the brake line to the cylinder before you bolt the cylinder to the backing plate, it's much easier.

--johnny


Foolish Carriage, 76 26' Eleganza(?) with beaucoup mods and add - ons. Braselton, Ga. I forgive them all, save those who hurt the dogs. They must answer to me in hell
Re: Inspecting rear bearings. [message #308078 is a reply to message #308074] Sat, 01 October 2016 11:00 Go to previous messageGo to next message
JohnL455 is currently offline  JohnL455   United States
Messages: 4447
Registered: October 2006
Location: Woodstock, IL
Karma: 12
Senior Member
Inspecting the RF rear the outer looks ok but feels rough on the bearings inner race that you can't see. Grease is red and so red grease or Mobil 1 but not separating and feels thicker than Mobil 1. Cinnabar was last to service Anyone know what they use? Do I have to replace the race if it looks ok?

John Lebetski
Woodstock, IL
77 Eleganza II
Re: Inspecting rear bearings. [message #308081 is a reply to message #308074] Sat, 01 October 2016 13:45 Go to previous messageGo to next message
jhbridges is currently offline  jhbridges   United States
Messages: 8412
Registered: May 2011
Location: Braselton ga
Karma: -74
Senior Member
If I felt anything rough on a surface the rollers roll on, I'd make sure it wasn't a lump of grease or whatever, and if it's still rough I'd replace. When you say you can't see, you refer to the race that's captive to the bearing ass'y? You can see the ones in the hub by wiping them off. If the hidden race is rough - you can feel it when you turn the bearing - replace it. It ain't gonna get smooth all by itself. Eventually something will break at the rough spot.

--johnny


Foolish Carriage, 76 26' Eleganza(?) with beaucoup mods and add - ons. Braselton, Ga. I forgive them all, save those who hurt the dogs. They must answer to me in hell
Re: [GMCnet] Inspecting rear bearings. [message #308084 is a reply to message #308081] Sat, 01 October 2016 13:49 Go to previous messageGo to next message
James Hupy is currently offline  James Hupy   United States
Messages: 6806
Registered: May 2010
Karma: -62
Senior Member
Use the basic rule. "If in doubt, throw it out" Don't let your rear wheels
pass you going down the road. No fun at'all.
Jim Hupy
Salem, Or.
On Oct 1, 2016 11:46 AM, "Johnny Bridges via Gmclist" <
gmclist@list.gmcnet.org> wrote:

> If I felt anything rough on a surface the rollers roll on, I'd make sure
> it wasn't a lump of grease or whatever, and if it's still rough I'd replace.
> When you say you can't see, you refer to the race that's captive to the
> bearing ass'y? You can see the ones in the hub by wiping them off. If the
> hidden race is rough - you can feel it when you turn the bearing - replace
> it. It ain't gonna get smooth all by itself. Eventually something will
> break at the rough spot.
>
> --johnny
> --
> '76 23' transmode Norris upfit, 76 26' Eleganza(?) with beaucoup mods and
> add - ons.
> Braselton, Ga.
>
> "Sometimes I wonder what tomorrow's gonna bring when I think about my
> dirty life and times" --Warren Zevon
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>
_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org

Re: [GMCnet] Inspecting rear bearings. [message #308096 is a reply to message #308078] Sat, 01 October 2016 16:38 Go to previous message
USAussie is currently offline  USAussie   United States
Messages: 15912
Registered: July 2007
Location: Sydney, Australia
Karma: 6
Senior Member
John,

My choice of grease is Synpower (USA) or Caterpillar Desert Gold (AUS).

New bearing = peace of mind.

Nuff said?

Regards,
Rob M.
USAussie - Downunder
AUS '75 Avion - The Blue Streak TZE365V100428
USA '75 Avion - Double Trouble TZE365V100426

-----Original Message-----
From: John R. Lebetski

Inspecting the RF rear the outer looks ok but feels rough on the bearings inner race that you can't see. Grease is red and so red
grease or Mobil 1 but not separating and feels thicker than Mobil 1. Cinnabar was last to service Anyone know what they use? Do
I have to replace the race if it looks ok?
--
John


_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org



Regards, Rob M. (USAussie) The Pedantic Mechanic Sydney, Australia '75 Avion - AUS - The Blue Streak TZE365V100428 '75 Avion - USA - Double Trouble TZE365V100426
Previous Topic: Need a tow car?
Next Topic: Need updated double pulley part #
Goto Forum:
  


Current Time: Wed Nov 06 01:38:01 CST 2024

Total time taken to generate the page: 0.03010 seconds