The year 2000, T1950 was rated at 5,000# GVWR. What I do not know is, if Sunline used 3,500# axles back then? If they did, then the brakes are 10" dia x 2 1/4" wide. But we should get that confirmed before you go off buying parts. Any of the year 2000 smaller campers with the 5,000# GVWR would have the same setup on the axles unless someone had a special order torque flex axle. Hopefully another forum member could chime in with their year 2000, or 2001 twin axle camper to confirm.
Does your axles have leaf springs? Just to confirm.
Do not know what brake parts you are after, but I will pass this along, it is often times if you need new brake shoes that you can buy the entire brake plate assembly cheaper then just the brake shoes alone. Then you just swap the brake plates and get all new magnets, springs, the lever arm, pins and the shoes all assembled. This site I have used a lot in the past for Dexter brake parts and had good luck. DEXTER Trailer Brake Assemblies at Trailer Parts Superstore
You will need both left hand and right hand brake assemblies. There are also other sites that offer the Dexter and Alko brake parts if you do not want to use that one.
By chance, do you have the original Sunline manual at home? Often times they list the axles in the yellow check sheet and have a axle manual. Or do you have a picture of the VIN tag on the front left of the camper? They state the axle ratings there which might help.
Hope this helps
PS. Don't forget to get new brake drum seals so you can replace them when you pull the brake drum. Many auto parts stores will have the seals.
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
Google Custom Search For Sunline Owners Club