Home » Public Forums » GMCnet » [GMCnet] Qestions about my 78 26 RB Royale
| [GMCnet] Qestions about my 78 26 RB Royale [message #252164] |
Sun, 15 June 2014 10:18  |
Sergio Mora
Messages: 15
Registered: May 2014
Karma: 0
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Junior Member |
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Good Morning all.
I am the new owner of a 78 Royale. Took it out for the 1st time last weekend on a short trip up the coast in preparation for longer and more distant adventures. Here are my questions.
1. Driving the coach on the freeway: traveled around 55 to 65 MPH- what kind of MPG should I expect at those speeds.?
2. Also noticed the rear end of the coach kind of wandering and me having to make constant corrections to the steering wheel. Not excessive, but noticeable. Should I look at my air bags, steering box, should I install rear sway bars....................?
3. What's the correct tire pressure
4. When I operate my water pump it sprays water out of the city water fill inlet...that can't be right. Pump works fine otherwise
5. I did not get much "stuff out of the black water tank when flushing with a jet flush thing(I am new to RV's) is there a best way to empty both holding tanks?
6. Speaking of tanks...I have a crack in my grey water tank at the outlet to the discharge valve-what is a good way to repair the crack without replacing the tank?
7. The 2 switches at the door entrance inside the cabin- what are these for? If I use one, it dims the lights and apparently, trips the breaker at the hook- up site. This is certainly not right.
8. I have a newer dometic fridge...It works but at times gives me E3 and E4 error codes. I turn it off and on and then it works fine-(for a while.)
9. Also, I am still looking for the LP Gas access cover hatch.
10. Any tips on how to use, prepare and avoid problems is also welcomed
11.
There will be more questions but this should be good for now. I appreciate any input as I am a first time owner of this magnificent piece of Americana....Always wanted a GMC and now I have one!
Thank you all in advance.
Sergio Mora
National City Fire Department
Battalion Chief- Operations
smora@nationalcityca.gov
619 336-4555 office
619 336-4566 sta.34
619 250-1724 mobile
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| Re: [GMCnet] Qestions about my 78 26 RB Royale [message #252168 is a reply to message #252164] |
Sun, 15 June 2014 10:51  |
Otterwan
Messages: 946
Registered: July 2013
Location: Lynnwood (north of Seattl...
Karma: 0
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Senior Member |
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Sergio Mora wrote on Sun, 15 June 2014 08:18Good Morning all.
I am the new owner of a 78 Royale. Took it out for the 1st time last weekend on a short trip up the coast in preparation for longer and more distant adventures. Here are my questions.
1. Driving the coach on the freeway: traveled around 55 to 65 MPH- what kind of MPG should I expect at those speeds.?
Don't worry about it
2. Also noticed the rear end of the coach kind of wandering and me having to make constant corrections to the steering wheel. Not excessive, but noticeable. Should I look at my air bags, steering box, should I install rear sway bars....................?
Tire pressure, shocks, airbags, wheel bearings. Check everything. As they say, "if you haven't done it, it hasn't been done"
3. What's the correct tire pressure
Depends on the tires. 60 to 65 is a good start.
4. When I operate my water pump it sprays water out of the city water fill inlet...that can't be right. Pump works fine otherwise
Nope. Bad valve somewhere.
5. I did not get much "stuff out of the black water tank when flushing with a jet flush thing(I am new to RV's) is there a best way to empty both holding tanks?
Let all the air out of the bags to drop the end as low as possible.
6. Speaking of tanks...I have a crack in my grey water tank at the outlet to the discharge valve-what is a good way to repair the crack without replacing the tank?
Best repair is getting a new tank. Other than that, lots of epoxy.
7. The 2 switches at the door entrance inside the cabin- what are these for? If I use one, it dims the lights and apparently, trips the breaker at the hook- up site. This is certainly not right.
Wiring diagrams are readily available.
8. I have a newer dometic fridge...It works but at times gives me E3 and E4 error codes. I turn it off and on and then it works fine-(for a while.)
No idea.
9. Also, I am still looking for the LP Gas access cover hatch.
Post in Swap Meet. A picture of the opening with dimensions would be helpful.
10. Any tips on how to use, prepare and avoid problems is also welcomed
Take a spare everything with you and keep the Blacklist handy.
11.
There will be more questions but this should be good for now. I appreciate any input as I am a first time owner of this magnificent piece of Americana....Always wanted a GMC and now I have one!
Thank you all in advance.
Sergio Mora
National City Fire Department
Battalion Chief- Operations
smora@nationalcityca.gov
619 336-4555 office
619 336-4566 sta.34
619 250-1724 mobile
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1977 Birchaven, Lynnwood WA - "We may not be able to stop all evil in the world, but I know that how we treat one another is entirely up to us."
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| Re: [GMCnet] Qestions about my 78 26 RB Royale [message #252170 is a reply to message #252164] |
Sun, 15 June 2014 11:00 |
Mr ERFisher
Messages: 7117
Registered: August 2005
Karma: 2
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Senior Member |
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Read here
http://gmcmotorhome.info
Erf
On Sunday, June 15, 2014, Sergio Mora wrote:
> Good Morning all.
>
> I am the new owner of a 78 Royale. Took it out for the 1st time last
> weekend on a short trip up the coast in preparation for longer and more
> distant adventures. Here are my questions.
>
>
> 1. Driving the coach on the freeway: traveled around 55 to 65 MPH-
> what kind of MPG should I expect at those speeds.?
>
> 2. Also noticed the rear end of the coach kind of wandering and me
> having to make constant corrections to the steering wheel. Not excessive,
> but noticeable. Should I look at my air bags, steering box, should I
> install rear sway bars....................?
>
> 3. What's the correct tire pressure
>
> 4. When I operate my water pump it sprays water out of the city
> water fill inlet...that can't be right. Pump works fine otherwise
>
> 5. I did not get much "stuff out of the black water tank when
> flushing with a jet flush thing(I am new to RV's) is there a best way to
> empty both holding tanks?
>
> 6. Speaking of tanks...I have a crack in my grey water tank at the
> outlet to the discharge valve-what is a good way to repair the crack
> without replacing the tank?
>
> 7. The 2 switches at the door entrance inside the cabin- what are
> these for? If I use one, it dims the lights and apparently, trips the
> breaker at the hook- up site. This is certainly not right.
>
> 8. I have a newer dometic fridge...It works but at times gives me
> E3 and E4 error codes. I turn it off and on and then it works fine-(for a
> while.)
>
> 9. Also, I am still looking for the LP Gas access cover hatch.
>
> 10. Any tips on how to use, prepare and avoid problems is also welcomed
>
> 11.
> There will be more questions but this should be good for now. I appreciate
> any input as I am a first time owner of this magnificent piece of
> Americana....Always wanted a GMC and now I have one!
>
> Thank you all in advance.
>
> Sergio Mora
> National City Fire Department
> Battalion Chief- Operations
> smora@nationalcityca.gov >
> 619 336-4555 office
> 619 336-4566 sta.34
> 619 250-1724 mobile
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>
--
Gene Fisher -- 74-23,77PB/ore/ca
“Give a man a fish; you have fed him for today --- give him a URL and
-------
http://gmcmotorhome.info/
Alternator Protection Cable
http://gmcmotorhome.info/APC.html
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| Re: [GMCnet] Qestions about my 78 26 RB Royale [message #252173 is a reply to message #252164] |
Sun, 15 June 2014 11:25 |
lotsofspareparts
Messages: 726
Registered: May 2014
Location: Arlington, WA
Karma: -9
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Senior Member |
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I can comment on the city water inlet fitting spraying water as mine was dribbling water from it when the pump was pressurized.
There is a check valve incorporated into the fitting and more than likely has a dried out gasket.
Best fix would be to replace the entire assembly, they are readily available.
Cheaper fix which is what I did for a temporary fix is to replace the gasket where the hose threads into the fitting, and install a plug, they are readily available as well.
The plug is usually dangling on a rubber string at the fitting but after years of exposure they rot and fall off.
If you don't plan on using the city water inlet, plug it and forget it.
Welcome to the forum..... I am new as well and am learning a lot by asking questions and browsing what some of the other owners have done to fix problems on their coaches.
Jared
Jared & Tina Lazaron + 14yr old Daughter.....
77 Eleganza II "Recherché".....
73 Canyon Lands 230 "Elephant"
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| Re: [GMCnet] Qestions about my 78 26 RB Royale [message #252176 is a reply to message #252173] |
Sun, 15 June 2014 11:31 |
Kingsley Coach
Messages: 2691
Registered: March 2009
Location: Nova Scotia Canada
Karma: -34
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Senior Member |
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re #2
Truck ruts are also a possibility
Mike in NS
On Sun, Jun 15, 2014 at 1:25 PM, Jared wrote:
> I can comment on the city water inlet fitting spraying water as mine was
> dribbling water from it when the pump was pressurized.
>
> There is a check valve incorporated into the fitting and more than likely
> has a dried out gasket.
>
> Best fix would be to replace the entire assembly, they are readily
> available.
>
> Cheaper fix which is what I did for a temporary fix is to replace the
> gasket where the hose threads into the fitting, and install a plug, they are
> readily available as well.
>
> The plug is usually dangling on a rubber string at the fitting but after
> years of exposure they rot and fall off.
>
> If you don't plan on using the city water inlet, plug it and forget it.
>
> Welcome to the forum..... I am new as well and am learning a lot by asking
> questions and browsing what some of the other owners have done to fix
> problems on their coaches.
>
> Jared
> --
> Jared & Tina Lazaron
> Daughter: Alina Lazaron 7yrs old
> 77 Eleganza II "Recherché"
> Arlington, WA
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>
--
Michael Beaton
1977 Kingsley 26-11
1977 Eleganza II 26-3
Antigonish, NS
* This is my second trip through the 60's; the first time the drugs were
better !
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| Re: [GMCnet] Qestions about my 78 26 RB Royale [message #252198 is a reply to message #252176] |
Sun, 15 June 2014 12:57 |
Bruce Hart
Messages: 1501
Registered: October 2011
Location: La Grange, Wyoming
Karma: 5
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Senior Member |
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re #2
Be sure your ride height is correct.
http://www.gmcws.org/Tech/height-align.pdf
On Sun, Jun 15, 2014 at 10:31 AM, Kingsley Coach
wrote:
> re #2
> Truck ruts are also a possibility
>
> Mike in NS
>
>
> On Sun, Jun 15, 2014 at 1:25 PM, Jared
> wrote:
>
>> I can comment on the city water inlet fitting spraying water as mine was
>> dribbling water from it when the pump was pressurized.
>>
>> There is a check valve incorporated into the fitting and more than likely
>> has a dried out gasket.
>>
>> Best fix would be to replace the entire assembly, they are readily
>> available.
>>
>> Cheaper fix which is what I did for a temporary fix is to replace the
>> gasket where the hose threads into the fitting, and install a plug, they
> are
>> readily available as well.
>>
>> The plug is usually dangling on a rubber string at the fitting but after
>> years of exposure they rot and fall off.
>>
>> If you don't plan on using the city water inlet, plug it and forget it.
>>
>> Welcome to the forum..... I am new as well and am learning a lot by
> asking
>> questions and browsing what some of the other owners have done to fix
>> problems on their coaches.
>>
>> Jared
>> --
>> Jared & Tina Lazaron
>> Daughter: Alina Lazaron 7yrs old
>> 77 Eleganza II "Recherché"
>> Arlington, WA
>> _______________________________________________
>> GMCnet mailing list
>> Unsubscribe or Change List Options:
>> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>>
>
>
>
> --
> Michael Beaton
> 1977 Kingsley 26-11
> 1977 Eleganza II 26-3
> Antigonish, NS
>
> * This is my second trip through the 60's; the first time the drugs were
> better !
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>
--
Bruce Hart
1976 Palm Beach
Milliken, Co
GMC=Got More Class
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Bruce Hart
1976 Palm Beach
1977 28' Kingsley
La Grange, Wyoming
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| Re: [GMCnet] Qestions about my 78 26 RB Royale [message #252216 is a reply to message #252164] |
Sun, 15 June 2014 20:12 |
Steve
Messages: 506
Registered: September 2013
Location: East Greenville, Pa
Karma: 1
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Senior Member |
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Sergio,
Welcome Aboard. I have a 78 Royale Rear Bath. The two switches near the door operate the porch light and the interior floor lighting. On my coach the floor lighting has a light near the stair to the cockpit and another towards the rear. They make great night lights.
Don't hesitate to contact me with any questions specific to the 78 Royale.
1978 GMC Royal
Eastern Pennslyvania
1968 Chevrolet C20 396 Camper Special
1969 Chevrolet C20 Camper Special
1985 Buick Electra Park Avenue
1992 Camaro 25th Anniversary Heretage Edition Black
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| Re: [GMCnet] Qestions about my 78 26 RB Royale [message #252250 is a reply to message #252164] |
Mon, 16 June 2014 01:34 |
habbyguy
Messages: 896
Registered: May 2012
Location: Mesa, AZ
Karma: 3
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Senior Member |
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My coach wandered a bit (OK more than a bit) when I got it.
No longer though, after...
1) Adjusting the steering box
2) Replacing a very worn relay arm with a Lenzi unit
3) Installing a set of Straight Track bogie devices on the middle wheels
On my coach (heavily modified by the POs so I never know what is stock), there are two switches on the cabinet by the door. One turns on the walkway lights (on the dinette seat bases), and the other fires off the updated water heater. There's a red light above that switch that illuminates if the heater doesn't successfully light.
Also, my fridge will error out when firing up on gas once in a while - normally when it hasn't been used for a while. I just assume it's because of air in the line going to the pilot light... it always comes on with a couple attempts, and works every time on AC or DC power.
You did good buying a late model Royale, IMHO - it's a really, really well-appointed rig that should give you plenty of enjoyment in high style.
Mark Hickey
Mesa, AZ
1978 Royale Center Kitchen
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| Re: [GMCnet] Qestions about my 78 26 RB Royale [message #252254 is a reply to message #252164] |
Mon, 16 June 2014 02:30 |
Mr ERFisher
Messages: 7117
Registered: August 2005
Karma: 2
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Senior Member |
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Put on an APC cable first
Before all
Erf
On Sunday, June 15, 2014, Sergio Mora wrote:
> Good Morning all.
>
> I am the new owner of a 78 Royale. Took it out for the 1st time last
> weekend on a short trip up the coast in preparation for longer and more
> distant adventures. Here are my questions.
>
>
> 1. Driving the coach on the freeway: traveled around 55 to 65 MPH-
> what kind of MPG should I expect at those speeds.?
>
> 2. Also noticed the rear end of the coach kind of wandering and me
> having to make constant corrections to the steering wheel. Not excessive,
> but noticeable. Should I look at my air bags, steering box, should I
> install rear sway bars....................?
>
> 3. What's the correct tire pressure
>
> 4. When I operate my water pump it sprays water out of the city
> water fill inlet...that can't be right. Pump works fine otherwise
>
> 5. I did not get much "stuff out of the black water tank when
> flushing with a jet flush thing(I am new to RV's) is there a best way to
> empty both holding tanks?
>
> 6. Speaking of tanks...I have a crack in my grey water tank at the
> outlet to the discharge valve-what is a good way to repair the crack
> without replacing the tank?
>
> 7. The 2 switches at the door entrance inside the cabin- what are
> these for? If I use one, it dims the lights and apparently, trips the
> breaker at the hook- up site. This is certainly not right.
>
> 8. I have a newer dometic fridge...It works but at times gives me
> E3 and E4 error codes. I turn it off and on and then it works fine-(for a
> while.)
>
> 9. Also, I am still looking for the LP Gas access cover hatch.
>
> 10. Any tips on how to use, prepare and avoid problems is also welcomed
>
> 11.
> There will be more questions but this should be good for now. I appreciate
> any input as I am a first time owner of this magnificent piece of
> Americana....Always wanted a GMC and now I have one!
>
> Thank you all in advance.
>
> Sergio Mora
> National City Fire Department
> Battalion Chief- Operations
> smora@nationalcityca.gov >
> 619 336-4555 office
> 619 336-4566 sta.34
> 619 250-1724 mobile
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>
--
Gene Fisher -- 74-23,77PB/ore/ca
“Give a man a fish; you have fed him for today --- give him a URL and
-------
http://gmcmotorhome.info/
Alternator Protection Cable
http://gmcmotorhome.info/APC.html
_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
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| Re: [GMCnet] Qestions about my 78 26 RB Royale [message #252320 is a reply to message #252164] |
Mon, 16 June 2014 15:36 |
Jim Rountree
Messages: 47
Registered: July 2010
Location: San Antonio, TX
Karma: 0
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Member |
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On my 76 Royale the two switches are for porch lite and floor lites. The floor lites has a pair of wires that run under the coach from the door to a lite that is up near the steps. My wires are about 12 gage and are attached to the underside by clamps. if there is slack in these wires they can come in contact with the exhaust pipe and may now be shorted causing your problem.
Jim Rountree
San Antonio,TX
76 PB,
76 Royale RB
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