Park Tool Rotor Truing Gauge User Manual
Dt-3 rotor truing gauge
Park Tool Co.
5115 Hadley Ave. N., St. Paul, MN 55128 (USA) www.parktool.com
DT-2 Rotor Truing Fork (not included)
DT-3 Rotor Truing Gauge
1. Assemble DT-3 as shown in Figure 1.
2. Mount DT-3 to left upright arm of TS-2 Park Tool
Professional Truing Stand with socket head cap
screw (#133S).
3. Mount wheel in truing stand.
4. Adjust quick release (#929) and indicator gauge
(#1758) so end cap (#569) just clears edge of rotor
(Figure 2). Thread lock nut (#1107) against body
(#1755) to stabilize indicator gauge.
5. Slowly rotate wheel, looking for bends in rotor as
it passes end cap. 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
Figure 2
Figure 1
End Cap
#569
Lock Nut
#1107
Indicator Gauge
#1758
Knob
#495
Shaft
#1757
Washer
#1556-4
Socket Head Cap Screw
#133S
Body
#1755
Quick Release Assembly
#929
Hex Nut
#131S