Mechanical Truck - Air Shift System w/Aux. Brace Parts List
| Item | Part Number | Description | Qty. |
| 1 | C4078 | BED DRIVE AIR SHIFT CYLINDER | 1 |
| 2 | C4076D | AUXILIARY AIR SHIFT CYLINDER (3rd & 4th) | 1 |
| 3 | C4077D | AUXILIARY AIR SHIFT CYLINDER (1st & 2nd) | 1 |
| 4 | 1468X4 | 1/8" MPT X 1/4" AIR STRAIGHT ADAPTER (AUX. & BED DRIVE) | 10 |
| 5 | 138086 | 1/2" CLEVIS PIN (AUX. & BED DRIVE) | 6 |
| 6 | xxxxxx | 1/8" X 1 1/2" COTTER PIN (AUX. & BED DRIVE) | 6 |
| 7 | 51381 | AUXILIARY BRACE - 4-SPEED AND BED DRIVE AIR SHIFT, UPPER | 1 |
| 7A | 51382 | AUXILIARY BRACE - BED DRIVE AIR SHIFT ONLY, UPPER (Not Pictured) | 1 |
| 8 | 51383 | AUXILIARY BRACE - LOWER | 1 |
| 9 | 51379 | 5/8" X 19 1/4" FRONT BOLT | 2 |
| 10 | 51380 | 5/8" X 18 1/4" REAR BOLT | 2 |
| 11 | B-3/8X11/2C | 3/8" X 1 1/2" COARSE BOLT | 2 |
| 12 | B-3/8X11/4C | 3/8" X 1 1/4" COARSE BOLT | 2 |
| 13 | B-3/8X1C | 3/8" X 1" COARSE BOLT | 2 |
| 14 | LN5/8C | 5/8" COARSE LOCK NUT | 4 |
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