Frame Alignment

Scott-

Definitely check the diagonals and length. I sense a problem checking for flatness.

Unless you have a flat granite gauge block large enough for your frame you might try
a laser device.

There is a device that will put out a perfect level plane of laser light. It is generally
used for construction sites and for setting drop ceilings. It makes a level line on
all walls in a room.

You would set this thing up next to your frame and measure from the horizontal
plane to your frame. This way you could tell if your frame is like a potato chip or
perfectly flat.

I've got to believe you can rent these somewhere.

I used to build these for Laser Alignment during College summer break in 1981.

Steven the wannabe........
 
>
> My concerns now relate to a method of aligning frame to coach body mounts
> once I get the frame back under the coach but still on automotive car
> jacks. The car jacks don't move in a straight up movement, they move
> diagonally up.

Scott,

Drag out your GMCMI roster and give Dan Stuckey a call. He's the guy
that does the frame rail replacement sessions at the GMCMI rallies.
Although I don't think he pulls the engine subframe when he does one.
Also Zak's BTDT - I'd call him too! For my $.02, sounds like a pair of
dollies with bottle jacks on them might be the way to go. Just keep
everything well supported - don't want to lose the GMC or you!

Patrick
- --
Patrick Flowers
Mailto:patrick

The GMC Motorhome Page
http://www.gmcmotorhome.com
 
Might also make you a flat camper!

>In a message dated 5/25/99 1:42:53 PM Eastern Daylight Time,

>
>> I sense a problem checking for flatness.
>
>Hi Steven!
>
>I don't have any problem with the frame being flat. It is as straight and
>flat as a lazer beam. No bends or nothing. It is so strong I might even
>attempt to jack it up sometime along the edge where there isn't a crossbrace
>to see if it bends like the OEM frames will do? Mine is no longer OEM as in
>1/8", it is 3/16" but what a difference 1/16 of an inch makes. My concerns
>now relate to a method of aligning frame to coach body mounts once I get the
>frame back under the coach but still on automotive car jacks. The car jacks
>don't move in a straight up movement, they move diagonally up.
>I have pictures of how I removed it but the reverse is allittle different
>because I care alot more about destroying all the work put into it. Having
>it fall off the jacks would not make me a happy camper:).
>http://members.aol.com/adohen/advice/index.htm
>
>Thank you for the thoughts,
>
>Scott GMC FRAME
>OFF
>
>
>
Tom & Marg Warner
Vernon Center NY
1976 palmbeach
"The beautiful Mohawk Vally"
 
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