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Park Tool Co.
5115 Hadley Ave. N., St. Paul, MN 55128 (USA) www.parktool.com
The Park Tool DT-1.2 Disc Brake Mount Facing Tool is a precision
tool system designed to machine disc brake mounts flat, parallel,
and in the same plane. Use of the DT-1.2 helps ensure proper disc
brake setup and performance.
The DT-1.2 works on forks with 100mm open dropouts and forks
with closed dropouts using 20mm thru axles. Works on frames
with 135mm open dropouts and frames with closed dropouts
using 12mm thru axles in 135mm, 142mm, 150mm, 157mm and
160mm lengths.
Always wear safety glasses when using the DT-1.2.
INSTRUCTIONS
Read instructions completely before using the DT-1.2 Disc Brake
Mount Facing Tool. Additionally, we recommend contacting the
manufacturer of frame or fork for specific recommendations,
cautions, or warranty issues before facing disc brake mounts.
A. Determine the frame or fork axle size and spacing, and as-
semble DT-1.2 as shown (Figure 1).
B. Install axle of assembled DT-1.2 fully into frame or fork
dropouts. For 9mm and 10mm axles, tighten axle mount-
ing bolts (ref. #1). For 12mm and 20mm thru axles, tighten
quick release, axle mounting bolts or pinch bolts provided
with bike (Figure 2).
C. Loosen knob set screw (ref. #8). Slide knob (ref. #9) to end
of facing cutter shaft (ref. #7), next to 10mm hex. Tighten
knob set screw.
D. Loosen pinch bolt (ref. #12) and pivot bolt (ref. #10) just
enough to allow axle body (ref. #5) and cutter body (ref.
#6) to pivot and slide on axle.
E. Slide body against retaining ring (ref. #3) or bushing (ref.
#14 or #15).
F .
Insert cutter (ref. #7) through lower hole of body. Insert
piloted tip of cutter fully into hole of brake mount.
G. Tighten pinch bolt and pivot bolt to lock position.
H. Turn knob clockwise while applying hand pressure to face
surface of brake mount. Remove only enough material to
create a clean, flat cut around the face of the mount. NOTE:
For speed and leverage, a ratcheting wrench with a 10mm
socket can be used to turn the 10mm hex head on the cutter.
I.
With teeth of cutter contacting face of brake mount,
loosen knob set screw and slide knob on shaft of cutter
until contact is made with body. Tighten set screw.
J.
Pull knob and cutter from lower hole and insert through
upper hole. Loosen pinch bolt and/or pivot bolt to fit piloted
tip of cutter fully into hole of brake mount, then retighten.
DT-1.2 Disc Brake
Mount Facing Tool
K. Note position of cutter teeth.
a. If cutter teeth contact brake mount and there is gap
between knob and body, complete step L and stop.
b. If knob contacts body before cutter teeth contact brake
mount, OR, if knob contacts body at the same time
cutter teeth contact brake mount, skip step L and go
straight to steps M through Q.
L.
Turn knob clockwise while applying hand pressure to face
surface of disc mount. Continue facing mount until knob
stops against body. The facing process is complete. The
upper and lower mounts should have a clean, flat cut
and the faces should be parallel and in the same plane.
Remove DT-1.2 from frame.
M. Loosen knob set screw and position knob at end of cutter
shaft, next to 10mm hex. Tighten knob set screw.
N. Turn knob clockwise while applying hand pressure to face
surface of disc mount. Remove only enough material to
create a clean, flat cut around face of brake mount.
O. Loosen knob set screw and slide knob on shaft of cutter
until contact is made with body. Tighten set screw.
P .
Pull knob and cutter from upper hole and insert through
lower hole. Loosen pinch bolt and/or pivot bolt to fit tip of
cutter into hole of brake mount, then retighten.
Q. Turn knob clockwise while applying hand pressure to face
surface of brake mount. Continue facing mount until knob
contacts body. The facing process is complete. The upper
and lower mounts should have a clean, flat cut and the
faces should be parallel and in the same plane. Remove
DT-1.2 from frame.
NOTES:
Being a precision cutting tool, the DT-1.2 should be used and
stored with extreme care. Always liberally apply cutting fluid (we
recommend Park Tool CF-2 Cutting Fluid) to the brake mount and
cutting teeth of the facer during each use. Components should
be kept clean and the facing cutter should be periodically wiped
with an oily cloth or rust inhibitor before storage, especially in
a damp or humid environment. Store the DT-1.2 in its original
packaging or other safe location. Like all cutting tools, the facing
cutter included with the DT-1.2 should be periodically replaced or
sharpened by a qualified technician. Park Tool offers a shapening
service that returns cutters to factory specifications. For informa-
tion: www.parktool.com
Some disc brake systems require the use of an adapter to
secure the caliper to the frame or fork mounts. If the DT-1.2
machines a smaller contact area than the contact area of the
adapter, the brake may require the use of spacing washers.
For additional instructions and images, visit: www.parktool.com

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Resumen de contenidos para Park Tool DT-1.2

  • Página 1 If cutter teeth contact brake mount and there is gap and in the same plane. Use of the DT-1.2 helps ensure proper disc between knob and body, complete step L and stop.
  • Página 2 Fork 9mm Axle Fork 20mm Thru Axle Fork 9mm Axle Frame10mm Axle Determinar el tamaño y la distancia del eje del cuadro o tijera y ensamble el DT-1.2 como se muestra: Fork 20mm Thru Axle ork 9mm Axle Frame10mm Axle...
  • Página 3 Drehknopf und Korpus des DT-1.2 eine Lücke besteht, vollenden Sie Schritt L. Das DT-1.2 passend für offene Gabelenden und für 20 mm Steck- b. Wenn der Drehknopf den Korpus berührt, bevor die achs-Gabelenden mit 100 mm Achslänge sowie für Rahmen mit of- Fräskopf-Oberfläche die Scheibenbremsaufnahme berührt...
  • Página 4 Park Tool Co. 5115 Hadley Ave. N., St. Paul, MN 55128 (USA) www.parktool.com Le DT-1.2 de Park Tool est conçu pour fraiser les faces des pattes K. Prendre bonne note de l’emplacement des dents de coupe. de disque, laissant une surface plane et propre. Le montage et a.
  • Página 5 (recomendamos Lubricante para Corte CF-2 de Park Tool) a los puntos de montaje y a los dientes de la H. Girar la perilla en el sentido de las manecillas del reloj, fresadora en cada uso. Los componentes deberán estar limpios mientras se presiona con la mano para fresar la superfi- y la fresadora limpiada periódicamente con un trapo aceitado...
  • Página 6 O-Ring 1765 Cutter Knob 12mm Thru Axle From Bike 1768 Pivot Bolt M6 x 22mm 20mm Thru Axle From Bike 1556-4 Washer © 2014 Park Tool Co. PARK TOOL® and the color BLUE are registered trademarks of Park Tool Co.