ParkTool DT-3 Park Tool

DT-3 Rotor Truing Gauge
- Assemble DT-3 as shown in Parts Diagram.
- Mount DT-3 to left upright arm of TS-2 Park Tool Professional Truing Stand with socket head cap screw (#133S).
- Mount wheel in truing stand.
- Adjust quick release (#929) and indicator gauge (#1758) so end cap (#569) just clears edge of rotor (Figure 1). Thread lock nut (#1107) against body (#1755) to stabilize indicator gauge.

- Slowly rotate wheel, looking for bends in rotor as it passes end cap
(Figure 2). True rotor as necessary using DT-2 Park Tool Rotor Truing Fork until straight.
For more information and complete instructions on truing disc brake rotors: www.parktool.com
DT-2 Rotor Truing Fork (not included)
DT-3 PART

DT-3 PART NUMBERS
Ref. # | Part # | Description | Qty. |
1 | 495 | Knob 1/4 – 20 | 1 |
2 | 1758 | Threaded Pointer | 1 |
3 | 1107 | Knurled Nut 1/4 – 20 | 1 |
4 | 569 | Pointer End Cap | 1 |
5 | 1755 | Body | 1 |
6 | 929 | Quick Release Upright Lock | 1 |
7 | 133S | Button Head Socket Cap Screw 1/4 – 20-x7/8 | 1 |
8 | 1556-4 | Washer | 1 |
9 | 1757 | Shaft | 1 |
10 | 131S | Hex Nut 1/4 – 20 | 1 |

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