“MODEL:” = HWH AP PART #.“S.N.:” = HWH SERIAL #.BOTTOM # (IF APPLICABLE) = OEM INTERNAL PART#
> OEM SpaceMaker Guide (Find out which step is used on which coach.) (ml56050.html)
> ENTIRE PARTS MANUAL for “Step System Parts" | PDF File | No Links | (MR48-MR48Z) (ml11428-48.pdf)
> “SERVICE / INSTALL / OPERATOR Information” for “Step Systems") (ml44100bx_step.html)