| HP 4 | 1930-1933 |
A-50 |
 |
https://youtu.be/DBbkGrH0_7Y | |
| HP 4 | 1969 |
4R69, 4RL69, 4W69 |
부품 구매 |  |
https://youtu.be/_EIdMLdGABI |
| HP 4 | 1970 |
4R70, 4RL70, 4W70, 4WL70 |
부품 구매 |  |
https://youtu.be/1Nf7OwS2Bus |
| HP 4 | 1971 |
4R71, 4RL71, 4W71, 4WL71 |
부품 구매 |  |
https://youtu.be/7hJO2i9PfCA |
| HP 4 | 1972 |
4R72, 4RL72, 4W72 |
부품 구매 |  |
https://youtu.be/y_chwsuwFqw |
| HP 4 | 1973 |
4R73, 4RL73, 4W73 |
부품 구매 |  |
https://youtu.be/WlhykL-Fbr8 |
| HP 4 | 1974 |
4R74, 4RL74, 4W74 |
부품 구매 |  |
https://youtu.be/Jxbtl2agwTo |
| HP 4 | 1975 |
4R75, 4RL75, 4W75 |
부품 구매 |  |
https://youtu.be/bwJFWz8TDrA |
| HP 4 | 1976 |
4R76, 4RL76, 4W76 |
부품 구매 |  |
https://youtu.be/LUev4D8Ptrc |
| HP 4 | 1977 |
4R77, 4RL77, 4W77 |
부품 구매 |  |
https://youtu.be/12giOknWRVY |
| HP 4 | 1978 |
4R78, 4RL78, RW78 |
부품 구매 |  |
https://youtu.be/jLpNmqIi0LA |
| HP 4 | 1979 |
4R79, 4RL79, 4W79 |
부품 구매 |  |
https://youtu.be/-xk_bytyne4 |
