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Old 10-16-2018, 08:16 AM   #1
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Questions about Greasing your coach

Iíve decided to tackle the job of greasing my coach before putting it away for the season. Have a couple of questions.
What grease brand or type do you recommend?
When using a typical cartridge hand grease gun how much grease do you put on every zert? ďXĒ number of pumps or until you see grease coming out of a seal?
Can you damage the fitting or seal if you do fill until it leaks?
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Old 10-16-2018, 09:27 AM   #2
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There are two types of grease used on most coaches (with air brakes).

First is the chassis grease (usually listed as a "multi-purpose lithium soap base" NLGI #2.
For driveshafts and other chassis fittings (steering, etc.) you pump the new grease in until the old grease comes out and you see the new grease. Then wipe up the excess. See attachment. You really can't over grease here.

Second, for the brakes (S-Cams, Air Disc Brakes) you should use a "bentonite Clay based" which takes the high heat better. You generally give the zerk fitting two pumps of the grease gun. However note that some brakes models (you have to remove a relief valve/breather, then grease until it comes out the hole. This is to ensure you don't force too much grease into the assembly. So you need to know what you have and check the service manual. This is the grease I use for brakes https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1
You can over grease here - so find out what brake system/type you have and get the service manual to be sure.

See this link - you may it find it useful (although not specifically about Monaco) http://beamalarm.com/Documents/Air%2...intenance.html
Attached Files
File Type: pdf Monaco Drive Shaft Lube.pdf (221.2 KB, 36 views)
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Old 10-16-2018, 12:20 PM   #3
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That's great information.
What grease gun do you use?
Do you have a separate gun for the brake grease, or just change cartridges?
Thanks
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Old 10-16-2018, 04:05 PM   #4
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I just use a standard hand pump grease gun - like this (but made by Linclon) https://www.amazon.com/Plews-30-200-...rds=grease+gun
but with a flexible hose.

If I was buying a new one, I would get the type that one hand can squeeze/pump rather than the full lever type as shown - or better yet, a battery powered grease gun. But since I already have the gun and I don't use it that often, I'll just tough it out and use what I have.

Regarding the grease, I will swap out the cartridges when needed (just need to pump the old grease out of the hose after swapping). I use the standard chassis grease on my tractor too, so that it usually what's in the gun. I probably go through two cartigrides of regular multi purpose grease a year. I doubt I'll ever use up a single cartridge of the clay based grease. When I swap out the clay cartridge I store it in a zip lock bag (because it will leak/drip some just sitting in my storage cabinet).
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Old 10-16-2018, 04:39 PM   #5
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I use the red synthetic grease. I grease the U joints till traces of fresh grease appear. For the front end , non sealed joints get 3 to 5 pumps of grease till you can see grease around the rubber cap . Same goes for king pins. If you have a sealed boot covering the tie rod ends , ball joints , I will give it about 2 - 3 pumps or just enough to see the boot start to bulge . The sealed boots can be damaged if you force in too much grease.
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Old 10-16-2018, 04:43 PM   #6
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Quote:
Originally Posted by Soppy View Post
IIf you have a sealed boot covering the tie rod ends , ball joints , I will give it about 2 - 3 pumps or just enough to see the boot start to bulge . The sealed boots can be damaged if you force in too much grease.
Good point on the sealed dust/grease boots.
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Old 10-17-2018, 06:10 AM   #7
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Quote:
Originally Posted by Soppy View Post
I use the red synthetic grease. I grease the U joints till traces of fresh grease appear. For the front end , non sealed joints get 3 to 5 pumps of grease till you can see grease around the rubber cap . Same goes for king pins. If you have a sealed boot covering the tie rod ends , ball joints , I will give it about 2 - 3 pumps or just enough to see the boot start to bulge . The sealed boots can be damaged if you force in too much grease.

This is exactly the grease I use and I use the same method as well. I got tired of hand pump grease guns and went and bought a cheap air grease gun from Tractor Supply. Cost 25 bucks and works great. It's not like the high end grease guns where you pull the trigger and it keeps pumping. It's like a single shot revolver (gun)Ö..you just keep pulling the trigger over and over till you get enough grease. Best 25 bucks I ever spent on a cheap air tool.
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Old 10-19-2018, 06:05 AM   #8
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Back in the day, Monaco published charts like these (for '03 Dynasty). Yours for your '06 Diplomat may be a little different.

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Old 10-19-2018, 08:23 AM   #9
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Thanks for the post. My manual does have a chassis lubrication chart similar to yours. But the one thing Iíve never been able to find is exactly how much grease to use. If I go back many years to my Grandpa on the farm, he would grease until grease would seep out of the side seals. I always wondered if this was harming the seals or the way itís done. Thanks
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Old 10-20-2018, 05:26 AM   #10
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Quote:
Originally Posted by RockyMtnRide View Post
Thanks for the post. My manual does have a chassis lubrication chart similar to yours. But the one thing Iíve never been able to find is exactly how much grease to use. If I go back many years to my Grandpa on the farm, he would grease until grease would seep out of the side seals. I always wondered if this was harming the seals or the way itís done. Thanks
A little grease weeping out of a seal is not necessarily a bad thing. Just be careful not to over do it. I like to see the grease coming out so I know it's taking what I am giving it.
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Old 10-20-2018, 06:46 AM   #11
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King pins, U joints, slack adjusters and S cam shaft tubes should be greased until new grease appears at the seal.

The seals are installed to keep contamanates out, not nessesserly grease in.

The idea is to flush out the old contamanated water and grease.
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Old 10-20-2018, 07:36 AM   #12
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King Pins? Front end jacked up and load off, or load on them while greasing?
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Old 10-20-2018, 07:44 AM   #13
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Buy a good wheel bearing grease and use it on everything. Wheel bearing grease is not water soluble.
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Old 10-20-2018, 07:45 AM   #14
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I prefer hand powered grease guns, because the resistance to pumping is important feedback on whether the fitting is leaking grease out, injecting it properly, or plugged up.
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