I can try and help but I cannot identify with the range part number you listed. Where did you find that 56282 number? I can only locate that number as an Atwood literature number and not the range model number. Like this one Sunline Coach Owner's Club - Sunline Owner's Files - Atwood range manual Literature no 56282
What year Sunline, and model? I'm going to assume it is at least past year 2000. What I am going to show you below would work on one of those and maybe back into the mid 90's. I do not know the really old ones in the 70's to the mid 90's.
If you lift up the stove top, inside there should be model number plate. It would look like this. The model may start with an R- and a number. This is from a 2004 model Sunline.
If you never lifted up the top of the stove before, they can be hard at times to open. There is a catch at the center of the front of the stove that holds down the top. It is just metal that is formed on the top and the front of the stove.
Here is how release the top cover. You need to press at the center of the back for the stove top. It may move hard, especially if it had not been lifted up in many years. You may have to even give it a real hard push to break free some corrosion. There are steel tabs in the back that act like springs holding the top forward.
Once the back moves, the front can will be released from the catch. It will lift up like this.
Some stove tops have a pin in the front and some do not. Atwood seemed to change that over the years. But many of them released the top by pushing in the center at the back of the stove top.
This is the top up on a 2007 Sunline going through a leak test. The spring hinge tabs for the stove top are shown in the back of the stove area, between the dust cover lid.
Hope this helps.
Current Sunlines: 2004 T310SR, 2004 T1950, 2004 T2475, 2007 T2499, 2004 T317SR
Prior Sunlines: 2004 T2499 - Fern Blue
2005 Ford F350 Lariat, 6.8L V10 W/ 4.10 rear axle, CC, Short Bed, SRW. Reese HP trunnion bar hitch W/ HP DC
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