I just ran across this while searching for the part number 446-044-072-0 that is in my coach. This would appear that I have the D-version.
MERITOR WABCO (800) 535-5560
Production Dates: 10/1/97 - 11/30/99 00E-055
Equipment Description: Phase 1, D-version Antilock Brake Systems (ABS) with Part Nos. 446
044 071 0, 446 044 072 0, 446 109 000 0, and 446 109 001 0, installed on medium trucks, school
and transit buses, and motor homes greater than 10,000 lbs. GVWR.
Recall Description: The Phase 1, D-version hydraulic ABS may not detect an extreme wheel
speed sensor air gap that can be created by placing the sensor a significant distance from its intended position when the vehicle is stationary. Therefore, the ABS does not comply with Federal Motor Vehicle Safety Standard 105, "Hydraulic and Electric Brake Systems."
Associated Vehicle Recall No(s).: 00V-279
Tom & Laurel
2000 Alpine Coach Limited 36FDS