- M102 (base of the M104 and M106)
- M102A1 (base of the M104A1 and M106A1)
- M102A2 (base of the M104A2 and M106A2)
The manuals for the M102 trailer chassis are TM 9-875B (October 1951), TM 9-8226 (April 1955) and ORD 7-8 SNL G-754 (1954). These manuals cover all the 1 1/2 ton two wheel trailers of the time. The manuals were replaced by TM 9-2330-213-14&P but the replacement manual did not include the then obsolete M102 and M104.