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05-03-2023, 04:58 PM
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#1
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Senior Member
Monaco Owners Club
Join Date: Aug 2017
Location: On the road
Posts: 1,917
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Shepard steering block leak
My Shepard steering box has a leak at the vent hole. They don't sell a replacement plug and say to silicone the hole closed. It is still leaking. I cleaned it with acetone first but it is still leaking. Here are a couple of pictures and one picture you can see Hydraulic fluid on my generator exhaust from driving about 300 miles. Any suggestions???
__________________
Full Time 2000 Dynasty Regent FD, 8.3, Banks Turbo, 5" Diameter Exhaust, 475 HP 1425 Torque, FASS system, towing 05 Pilot 1500 Watts solar 800ah lithium & E-Bike
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05-03-2023, 07:37 PM
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#2
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Senior Member
Monaco Owners Club
Join Date: Jun 2014
Posts: 14,498
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Tim,
Not 100% sure but I think the leak is from the dust cap on the sector shaft. I have a M100 Sheppard manual, here's a link https://www.rhsheppard.com/wp-conten...v-B_8-2014.pdf , and it does say that after assembly you are suppose to cover the hole with RTV type sealant.
But at the end of the sector shaft there is an O-ring and my guess it's leaking there and since the dust cover isn't suppose to contain pressure it just leaks.
There is a Sector Shaft seal kit
https://www.amazon.com/M100-Power-St...09RZJY9R2?th=1 that you can buy and the job can be done without removing the steering box. I found this video and it looks like the rig had the same type of leak.
The seal kit isn't that expensive IF this is the right one.
https://www.amazon.com/M100-Power-St...09RZJY9R2?th=1
__________________
Jim J
2002 Monaco Windsor 38 PKD Cummins ISC 350 8.3L
2005 Jeep Grand Cherokee w/5.7 Hemi
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05-03-2023, 07:45 PM
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#3
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Senior Member
Monaco Owners Club
Join Date: Jun 2014
Posts: 14,498
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Question, are you satisfied with how your rig steers?? If you aren't a TRW swap may be an option
But if you are satisfied a ~$50 seal kit and a little grease on your hands may also be an option and just repair your current steering box.
Tough call.
__________________
Jim J
2002 Monaco Windsor 38 PKD Cummins ISC 350 8.3L
2005 Jeep Grand Cherokee w/5.7 Hemi
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05-03-2023, 08:13 PM
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#4
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Senior Member
Monaco Owners Club
Join Date: Aug 2017
Location: On the road
Posts: 1,917
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I actually love the way my motorhome steers. There’s no play at all so I guess I’m lucky with how my steering gearbox was put together. I will look at the manual and see what I can figure out. Thank you.
__________________
Full Time 2000 Dynasty Regent FD, 8.3, Banks Turbo, 5" Diameter Exhaust, 475 HP 1425 Torque, FASS system, towing 05 Pilot 1500 Watts solar 800ah lithium & E-Bike
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05-03-2023, 09:09 PM
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#5
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Senior Member
Monaco Owners Club
Join Date: Oct 2009
Location: Tucson, AZ
Posts: 6,558
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If you want to plug the hole until you get time to repair or replace the steering box, Amazon sells a silicone tapered plug kit. These are made for powder coating and fit very tight. I had to use a channel lock to remove it.
40 Pc 1/16" to 3/4" High Temp Silicone Rubber Tapered Plug Kit - Powder Coating Custom Painting Supplies https://a.co/d/8Gx5b8a
__________________
97 Monaco Windsor- Sold
07 Monaco Executive McKinley- Sold
04 Monaco Signature Chateau IV
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05-03-2023, 09:28 PM
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#6
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Senior Member
Monaco Owners Club
Join Date: Aug 2017
Location: On the road
Posts: 1,917
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Looking at the video and manual, I'm not even sure I have a Shepard M100 steering box. That's what the build sheet says for my coach. Here are a couple more pictures if anyone can look at them and say for sure???
__________________
Full Time 2000 Dynasty Regent FD, 8.3, Banks Turbo, 5" Diameter Exhaust, 475 HP 1425 Torque, FASS system, towing 05 Pilot 1500 Watts solar 800ah lithium & E-Bike
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05-03-2023, 10:00 PM
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#7
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Senior Member
Monaco Owners Club
Join Date: Aug 2017
Location: On the road
Posts: 1,917
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Quote:
Originally Posted by vito.a
If you want to plug the hole until you get time to repair or replace the steering box, Amazon sells a silicone tapered plug kit. These are made for powder coating and fit very tight. I had to use a channel lock to remove it.
40 Pc 1/16" to 3/4" High Temp Silicone Rubber Tapered Plug Kit - Powder Coating Custom Painting Supplies https://a.co/d/8Gx5b8a
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Thanks Vito, I may go that route until I can get it to a shop. I'm full time and don't have the tools to do the seal job. I'm still not sure I have a M100 box.
__________________
Full Time 2000 Dynasty Regent FD, 8.3, Banks Turbo, 5" Diameter Exhaust, 475 HP 1425 Torque, FASS system, towing 05 Pilot 1500 Watts solar 800ah lithium & E-Bike
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05-04-2023, 05:58 AM
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#8
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Senior Member
Monaco Owners Club
Join Date: Jun 2014
Posts: 14,498
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On my rig I can clearly see the word "Sheppard" cast into the box.
I'll take a look to see if I can see where it is.
__________________
Jim J
2002 Monaco Windsor 38 PKD Cummins ISC 350 8.3L
2005 Jeep Grand Cherokee w/5.7 Hemi
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05-04-2023, 06:00 AM
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#9
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Senior Member
Monaco Owners Club
Join Date: Jun 2014
Posts: 14,498
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I believe the end you are showing may be the cylinder head.
__________________
Jim J
2002 Monaco Windsor 38 PKD Cummins ISC 350 8.3L
2005 Jeep Grand Cherokee w/5.7 Hemi
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05-04-2023, 06:03 AM
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#10
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Senior Member
Monaco Owners Club
Join Date: Jun 2014
Posts: 14,498
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Quote:
Originally Posted by Timaz
I actually love the way my motorhome steers. There’s no play at all so I guess I’m lucky with how my steering gearbox was put together. I will look at the manual and see what I can figure out. Thank you.
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I'm one of the lucky ones to as my rig drives great, and I'd never consider changing to a TRW unless my steering box completely fails and can't be repaired.
__________________
Jim J
2002 Monaco Windsor 38 PKD Cummins ISC 350 8.3L
2005 Jeep Grand Cherokee w/5.7 Hemi
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05-04-2023, 10:15 AM
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#11
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Senior Member
Monaco Owners Club
Join Date: Aug 2017
Location: On the road
Posts: 1,917
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Quote:
Originally Posted by jacwjames
I believe the end you are showing may be the cylinder head.
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So it is a M100 box?
__________________
Full Time 2000 Dynasty Regent FD, 8.3, Banks Turbo, 5" Diameter Exhaust, 475 HP 1425 Torque, FASS system, towing 05 Pilot 1500 Watts solar 800ah lithium & E-Bike
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05-04-2023, 02:42 PM
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#12
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Senior Member
Monaco Owners Club
Join Date: Jun 2014
Posts: 14,498
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I went out and took a couple picture of mine, I think yours is a Sheppard M100.
First picture is looking up. Second picture is the cast numbers are on the outboard side where your hoses are hanging down? In my picture I can make it out pretty good.
How bad is the steering box leaking
__________________
Jim J
2002 Monaco Windsor 38 PKD Cummins ISC 350 8.3L
2005 Jeep Grand Cherokee w/5.7 Hemi
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05-04-2023, 02:48 PM
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#13
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Senior Member
Monaco Owners Club
Join Date: Jun 2014
Posts: 14,498
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Also, the way mine is mounted it would have to be removed to be able to replace the seal kit, no room to pull the sector shaft out.
Just throwing this out there but I had a bad hydraulic leak on the front of the 4WD tractor, would have been a real pain tear it apart to fix. Some one recommended I try this,
https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1
It did stop the leak for ~4 years, I am going to add it again. I've also used it in my wifes Chrysler Town & Country, the thing started using/leaing oil, added the ATP and it stopped it for ~ year.
You might be able to make it home if it slows/stops the leak.
__________________
Jim J
2002 Monaco Windsor 38 PKD Cummins ISC 350 8.3L
2005 Jeep Grand Cherokee w/5.7 Hemi
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05-04-2023, 03:22 PM
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#14
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Senior Member
Monaco Owners Club
Join Date: Aug 2017
Location: On the road
Posts: 1,917
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Quote:
Originally Posted by jacwjames
I went out and took a couple picture of mine, I think yours is a Sheppard M100.
First picture is looking up. Second picture is the cast numbers are on the outboard side where your hoses are hanging down? In my picture I can make it out pretty good.
How bad is the steering box leaking
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It's leaking enough to leave a trail down the side of the coach. Not real bad but enough. Thank you very much for the pictures and it does confirm what I have. I pulled the wires back and can see it on mine. I think I have found a shop here that can fix it. fingers crossed.
__________________
Full Time 2000 Dynasty Regent FD, 8.3, Banks Turbo, 5" Diameter Exhaust, 475 HP 1425 Torque, FASS system, towing 05 Pilot 1500 Watts solar 800ah lithium & E-Bike
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