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Old 02-11-2019, 01:44 PM   #1
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Monaco Owners Club
Join Date: Feb 2011
Location: Jax Fl
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2003 Cayman Brake Part Info needed

Anyone know the Mfg and part# for the rear rotors on a 2003 Cayman? Need to replace mine and local shop wants me to find parts because its a Motorhome. Any info will be appreciated.

Thanks in advance for the help.

Jake & Sarah, US Army Retired
03 Cayman 36PBD, Source Engineering Control Arms ISB 300hp LT Engine/2000MH Trans 2016 F150 4x4
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Old 02-11-2019, 11:49 PM   #2
Join Date: Sep 2018
Posts: 84
Your coach should have the Roadmaster R4R (rail chassis). You will have one of the following rear differentials: DANA S-150, Rockwell RS15-120, Eaton 15040S, or DANA 80. Because Monaco built those chassis themselves with outsourced parts from various suppliers, the braking systems can vary.
My recommendation is to take the coach to a Freightliner repair facility and have them determine which brake system you have. If a Freightliner repair facility is not available, an International truck repair center that repairs medium duty trucks will be able to determine the manufacturer of the discs. Both those manufacturers use those differentials in their products.
If the coach is out of comission, take photos of the differential with the ID tag clearly defined, brake calipers, the wheel lugs, the diiscs, and get the disc casting numbers and minimum tolerance information and pay one of these truck repair facilities a visit.

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Old 02-17-2019, 10:32 PM   #3
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Location: D/FW Texas
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Jake, my 03 Cayman has the Dana rear end and originally came with Bosch brakes. They used Bendix and Bosch as suppliers. I had so much trouble with the Bosch brakes after two recall replacements that failed I replaced them with Bendix calipers, pads and rotors. There are 2 different parts numbers for the pads left and right. Any heavy duty truck parts supply should have the necessary parts, even Napa might have them or should be able to cross reference the pad numbers.
Here are the numbers for mine; 974708 and 974709. I don't remember which is left or right. Hope this helps.

Mike H
Mike & Debbie
2003 36' Monaco Cayman
2007 Saturn Vue "pusher"
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