Oil & air

[Ryan Wright]

Couple of questions,

1. How do I change my oil & filter(s) (8V92)? What type of filter(s)
do I buy & where? How many gallons of oil will it take to do this job?

2. How do I manually air the coach up with an external compressor? All
coach air drops to zero within a few minutes of turning off the engine
and I want to air it up in my shop and find the leaks. I do not have
an on-board 12 volt compressor (I want to add one, though). I tried
putting air into the "air" connection (small compartment above the
cruise air's on in the center-driver's side) but there must be a
solenoid or one way valve somewhere because it didn't take much and
didn't air anything up. Also, what's the recommend pressure I should
provide? I generally work with 90psi but can provide up to 150psi @
15cfm.

Thank you!

-Ryan
'86 PT-40 8V92
Tri-Cities, WA

[Pete Masterson]

On May 20, 2007, at 3:37 PM, Ryan Wright wrote:

> Couple of questions,
>
> 1. How do I change my oil & filter(s) (8V92)? What type of filter(s)
> do I buy & where? How many gallons of oil will it take to do this job?

You should find a booklet specifically for the engine in your blue
box. Perhaps someone with an 8V92 will advise. Note that the 2-cycle
engines use a _single_ weight oil, not the multi-viscosity oil that 4-
cycle engines use.

You'll need both oil and fuel filters to keep on hand. My coach has a
"lifetime" air filter that simply is cleaned and never replaced. I
don't know what year that was initiated (or if it was ever used with
the 8v92 -- I have a Series 60).

Keep in mind you'll also need/want similar filters for your
generator. Both fuel and oil ... my generator uses a particularly
hard-to-find air filter. Had to order it over the Internet. I keep a
spare on board.

Napa auto parts tends to have equivalents for nearly all the filters
you'll need.

>
> 2. How do I manually air the coach up with an external compressor? All
> coach air drops to zero within a few minutes of turning off the engine
> and I want to air it up in my shop and find the leaks. I do not have
> an on-board 12 volt compressor (I want to add one, though). I tried
> putting air into the "air" connection (small compartment above the
> cruise air's on in the center-driver's side) but there must be a
> solenoid or one way valve somewhere because it didn't take much and
> didn't air anything up. Also, what's the recommend pressure I should
> provide? I generally work with 90psi but can provide up to 150psi @
> 15cfm.

The "air connection" you found is a supply source to provide air to
(for example) fill a tire from the engine air compressor. It is "one
way", so that is not the "shop air" inlet.

Look carefully in the engine compartment, probably somewhere near
where the engine air compressor is mounted. You should see a "tire
valve" which is the air input ("shop air") valve. Note that it may
possibly leak, being a source of air loss. It uses a standard tire-
type valve core. I put a metal tire valve cap on mine (and I notice
that I retain some air pressure much longer than before).

Most air systems on BBs are set for a maximum of 120 lbs. Since I
'air' my coach to operate the dump valves, I usually only pressurize
to 60-70 lbs -- as that allows the dump valves to operate.

If you need to provide more air, say to raise the suspension, then
consider 120 as the maximum (the 'pop off' valve should activate at
that pressure anyway). 15 CFM seems a bit high, so I'd be careful
that you're not supplying too much air to the system. Certainly,
you'll reach any given pressure sooner than I do with the 5 CFM
compressor I have. Perhaps someone with more experience will comment.


Pete Masterson
'95 Blue Bird Wanderlodge WBDA 42
aeonix1@...
On the road at Lockhart Texas.

[Ryan Wright]

Pete,

Appreciate the response - thank you! Good call on the generator fuel
filter - I forgot about that. I've got spares for the Racor and
secondary on the 8V92 but nothing for the Yanmar. I'll add that to my
shopping list.

> The "air connection" you found is a supply source to provide air to
> (for example) fill a tire from the engine air compressor. It is "one
> way", so that is not the "shop air" inlet.

Figured as much after it didn't take anything. I'll see if I can find
that schrader valve tomorrow. Think I'll replace it with a proper air
fitting once I do find it (I hate schrader valves; they seem useful
for tires, but that's about it).

> 15 CFM seems a bit high, so I'd be careful
> that you're not supplying too much air to the system.

CFM will be fine, it's PSI that matters here. Thanks for the PSI
numbers, that will keep me under control.

-Ryan
'86 PT-40 8V92
Tri-Cities, WA


On 5/20/07, Pete Masterson wrote:
>
> You should find a booklet specifically for the engine in your blue
> box. Perhaps someone with an 8V92 will advise. Note that the 2-cycle
> engines use a _single_ weight oil, not the multi-viscosity oil that 4-
> cycle engines use.
>
> You'll need both oil and fuel filters to keep on hand. My coach has a
> "lifetime" air filter that simply is cleaned and never replaced. I
> don't know what year that was initiated (or if it was ever used with
> the 8v92 -- I have a Series 60).
>
> Keep in mind you'll also need/want similar filters for your
> generator. Both fuel and oil ... my generator uses a particularly
> hard-to-find air filter. Had to order it over the Internet. I keep a
> spare on board.
>
> Napa auto parts tends to have equivalents for nearly all the filters
> you'll need.
>
> >
> > 2. How do I manually air the coach up with an external compressor? All
> > coach air drops to zero within a few minutes of turning off the engine
> > and I want to air it up in my shop and find the leaks. I do not have
> > an on-board 12 volt compressor (I want to add one, though). I tried
> > putting air into the "air" connection (small compartment above the
> > cruise air's on in the center-driver's side) but there must be a
> > solenoid or one way valve somewhere because it didn't take much and
> > didn't air anything up. Also, what's the recommend pressure I should
> > provide? I generally work with 90psi but can provide up to 150psi @
> > 15cfm.
>
> The "air connection" you found is a supply source to provide air to
> (for example) fill a tire from the engine air compressor. It is "one
> way", so that is not the "shop air" inlet.
>
> Look carefully in the engine compartment, probably somewhere near
> where the engine air compressor is mounted. You should see a "tire
> valve" which is the air input ("shop air") valve. Note that it may
> possibly leak, being a source of air loss. It uses a standard tire-
> type valve core. I put a metal tire valve cap on mine (and I notice
> that I retain some air pressure much longer than before).
>
> Most air systems on BBs are set for a maximum of 120 lbs. Since I
> 'air' my coach to operate the dump valves, I usually only pressurize
> to 60-70 lbs -- as that allows the dump valves to operate.
>
> If you need to provide more air, say to raise the suspension, then
> consider 120 as the maximum (the 'pop off' valve should activate at
> that pressure anyway). 15 CFM seems a bit high, so I'd be careful
> that you're not supplying too much air to the system. Certainly,
> you'll reach any given pressure sooner than I do with the 5 CFM
> compressor I have. Perhaps someone with more experience will comment.
>
> Pete Masterson
> '95 Blue Bird Wanderlodge WBDA 42
> aeonix1@...
> On the road at Lockhart Texas.
>

[jim riordan]

5 gallons, straight 40 weight delo 100 or better, I just put in Delo 600

Don't have the oil filter number with me, do you have the blue box?

In the rear of the coach looking forward to the right side on the rail is
whrer you would air up coach.
Jim Riordan
88 WBWL XXV
Stuart, Fl.

Ryan Wright wrote:
Couple of questions,

1. How do I change my oil & filter(s) (8V92)? What type of filter(s)
do I buy & where? How many gallons of oil will it take to do this job?

2. How do I manually air the coach up with an external compressor? All
coach air drops to zero within a few minutes of turning off the engine
and I want to air it up in my shop and find the leaks. I do not have
an on-board 12 volt compressor (I want to add one, though). I tried
putting air into the "air" connection (small compartment above the
cruise air's on in the center-driver's side) but there must be a
solenoid or one way valve somewhere because it didn't take much and
didn't air anything up. Also, what's the recommend pressure I should
provide? I generally work with 90psi but can provide up to 150psi @
15cfm.

Thank you!

-Ryan
'86 PT-40 8V92
Tri-Cities, WA





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[worktohobby]

Hello,

On my 8v92, including oil in the filter, the magic number was just
over 28 quarts. I used a big plastic bin to dump the old oil in and
the transfered that to gallon jugs.

There should be no sludge. On 2 strokers, what gets past the
compression rings ends up in the airbox and in turn returned to be
cumbusted. So little cumbustion by products ever find there way into
the oil.

You can use the shrader valve in the engine compartment. You can also
try the accessory air port in your road side compartment. On my old
bus, this would air up the accessory items but would not air the
tanks. Sometimes handy. I have not tried it on my 87 though.

Hope this helps,

Don Duncan
1987 PT40
Beaverton, Oregon

--- In WanderlodgeForum@yahoogroups.com, "Ryan Wright"
wrote:
>
> Couple of questions,
>
> 1. How do I change my oil & filter(s) (8V92)? What type of filter(s)
> do I buy & where? How many gallons of oil will it take to do this
job?
>
> 2. How do I manually air the coach up with an external compressor?
All
> coach air drops to zero within a few minutes of turning off the
engine
> and I want to air it up in my shop and find the leaks. I do not have
> an on-board 12 volt compressor (I want to add one, though). I tried
> putting air into the "air" connection (small compartment above the
> cruise air's on in the center-driver's side) but there must be a
> solenoid or one way valve somewhere because it didn't take much and
> didn't air anything up. Also, what's the recommend pressure I should
> provide? I generally work with 90psi but can provide up to 150psi @
> 15cfm.
>
> Thank you!
>
> -Ryan
> '86 PT-40 8V92
> Tri-Cities, WA
>