| Re: [GMCnet] Installing Grease Zerks For Front Wheel Bearings [message #124333 is a reply to message #124224] |
Mon, 02 May 2011 23:15   |
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USAussie
Messages: 15912
Registered: July 2007
Location: Sydney, Australia
Karma:
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Senior Member |
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Mark,
To grease the front wheel bearings on a GMC that has zerk fittings
installed:
1) Loosen all wheel nuts on the front wheels.
2) Jack GMC up high enough to get front wheels off the ground.
3) Support the GMC on jack stands.
4) Remove both front wheels.
5) Thoroughly clean the housing of the outer CV joint and the back of the
steering knuckle around the CV joint.
6) Remove the cotter pin from both front axle nuts.
7) Have an assistant sit in the coach and apply the brakes while you loosen
then remove the front axle nuts.
8) Push the front axles (CV joints) inwards as much as possible.
9) Attach grease gun to the grease zerk and pump grease into the bearing
until you can see fresh grease coming out between the seal and the CV joint.
10) Push the front axle back into the hub, install the axle nut and torque
it as per the Maintenance Manual then install the cotter pin.
11) Replace the wheels and hub caps.
I've typed this from memory and if I've over looked anything or screwed it
up PLEASE correct me.
Regards,
Rob M.
USAussie - Downunder
AUS '75 Avion - The Blue Streak TZE365V100428
USA '75 Avion - Double Trouble TZE365V100426
-----Original Message-----
From: gmclist-bounces@temp.gmcnet.org
[mailto:gmclist-bounces@temp.gmcnet.org] On Behalf Of Mark
Sent: Monday, May 02, 2011 1:45 PM
To: gmclist@temp.gmcnet.org
Subject: [GMCnet] Installing Grease Zerks For Front Wheel Bearings
Pretty much without exception, every time I apply grease to to a component
with a grease gun, I pump the handle until it squeezes out somewhere. I
understand that is not the correct way with GMC Motorhome fitted with front
wheel bearing zerks because you will "blow out" the rear seals. So what is
the "correct" way to grease them (how many "pumps")? But here is my real
question: Couldn't there be another hole drilled somewhere in the assembly
with a removable plug that you could remove the plug and pump grease into
the zerk until grease comes out the hole (and then replace the plug)? That
would give me more assurance that I have applied enough grease, and
hopefully prevent blowing out the rear seal. Is that realistic?
--
'73 23' CanyonLands
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Regards,
Rob M. (USAussie)
The Pedantic Mechanic
Sydney, Australia
'75 Avion - AUS - The Blue Streak TZE365V100428
'75 Avion - USA - Double Trouble TZE365V100426
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