Source:http://www.rolleirepairs.com
If you have any questions regarding how to repair of CLA a Rollei, the above website is one of the best places to look at.
Rolleiflex TLR models with Fixed Focusing Hood
| Rollei TLR Model | Serial Numbers | Bay size | Introduced | |
| Rolleiflex 3.5 | X Synch | 1100000-1169999 | I | 1950 |
| Rolleiflex 3.5 | M-X Synch | 1200000-1427999 | I | 1951 |
| Rolleiflex 3.5 | M-X E-V | 1428000-1499999 | I | 1954 |
| Rolleiflex 3.5 | M-X E-V | 1700000-1737911 | I | 1954 |
| Rolleiflex 3.5E | Exp. Meter | 1740000-1869000 | II | 1956 |
| Rolleiflex 2.8A | 2.8 Tessar X – MX | 1101000-1204999 | Spec Hood – II | 1950 |
| Rolleiflex 2.8B | 2.8 Biometer | 1204000-1260000 | III | 1951 |
| Rolleiflex 2.8C | 2.8 Xenotar | 1260350-1444000 | III | 1953 |
| Rolleiflex 2.8C | 2.8 Planar | 1444001-1475405 | III | 1953 |
| Rolleiflex 2.8D | E-V Scale | 1600000-1620999 | III | 1955 |
| Rolleiflex 2.8E | Exp. Meter | 1621000-1665999 | III | 1956 |
| Rolleicord III | X SYNCH | 1137000-1344051 | I | 1950 |
| Rolleicord IV | M-X Synch | 1344051-1390999 | I | 1953 |
| Rolleicord V | M-X – E-V Scale | 1500000-1583999 | I | 1955 |
| Rolleicord Va | 5-format | 1584000-1599999 | I | 1957 |
| Rolleicord Va | 5-format | 1900000-1943999 | I | 1957 |
| Rolleiflex 4X4 | 127 film | 2000000-2099999 | I | 1957 |
Rolleiflex TLR models with Removable Focusing Hood
| Rollei TLR Model | Serial Numbers | Bay size | Introduced | |
| Rolleiflex 3.5E-2 | 1st issue | 1870000-1872999 | II | 1959 |
| Rolleiflex 3.5E-2 | Xenotar MX EV | 2480000-2482999 | II | 1961 |
| Rolleiflex 3.5E-3 | MX EV | 2380000-2385034 | II | 1962 |
| Rolleiflex 2.8E-2 | MX EV | 2350000-2356999 | II | 1959 |
| Rolleiflex 2.8E-3 | MX EV | 2360000-2362024 | II | 1962 |
| Rolleiflex T | Tessar | 2100000-……… | I | 1958 |
| Rolleiflex 3.5F | Ring gear shutter | 2200000-2229000 | II | 1959 |
| Rolleiflex 3.5F | Ring gear shutter | 2230000-2249999 | II | 1960 |
| Rolleiflex 3.5F | Coupled meter | 2250000-2815050 | II | 1961 |
| Tele Rolleiflex | 4/0 135mm Sonnar | 2300000-2304999 | III | 1959 |
| Rolleiflex 2.8F | Coupled meter | 2400000-2451850 | III | 1960 |
| Rollei Magic | 3.5 Xenar | 2500000-2534999 | II | 1960 |
| Wide-Angle Rollei | 4.0/55 Distagon | 2490000-2493999 | IV | 1961 |
| Rollei Magic II | Auto and Manual | 2525000-2547597 | II | 1962 |
| Rolleicord Vb | 3.5 Xenar | 2600000-……… | I | 1962 |
| Rolleiflex 3.5F | Coupled meter | 2815000-……… | II | 1969 |
| Rolleiflex 2.8F | Coupled meter | 2451851-……… | III | 1969 |
| Tele Rolleiflex | 4.0/135 Sonnar | 2305000-……… | III | 1970 |
TLRgraphy 