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Somebody seemed to believe the way to maintain this unit was to dump a pint of oil into it.
Even with that, one of the main problems with it was still gummy lubricants and seized mechanics.
| Serial Number: | M 158452 |
| Year of Manufacture: | 1950s ? |
| Date of Receipt: | 2001 May |
| Source: | CVRS contact. |
| State upon Receipt: | Filled with oil. |
| Status: | Addition functional. |
| Date: | ~2001 |
| Procedure: | Base pan and other surfaces cleaned of gross amounts of oil. |
| Date: | 2013 Feb |
| Procedure: | Exterior cleaned. Some cleaning of mechanism. Keycaps 6 and ShiftRight broken on inside. Plastic glued with crazy glue, voids filled with hot glue for additional strength |
| Date: | 2013 Feb |
| Symptoms: | A couple of numerics keys are jammed. |
| Solution: | Key bars had slipped out of their guide by the storage face. Some straightening of the key bars for alignment of the keycaps. |
| Date: | 2013 Feb |
| Symptoms: | Numeric keys are locked. |
| Solution: | Keypad lock on short shaft below total and sub-total keys is stiff from old lubricant. Unseized with lubricated contact cleaner. |
| Date: | 2013 Feb |
| Symptoms: | Some digits sticking. Total will show non-zero after prior total (clear). |
| Solution: | LCC sprayed on register gears. Addition works. Subtraction seems to work except when only a single digit is entered the digit always registers as 1. Multiplication still loops endlessly. |
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.. | Olivetti Multisumma 22 | ..
Mechanical Calculators |
bhilpert |