CONTENTS:
2 #451 Draft Gear Boxes & Lids, 2 #148 WHISKER
®
Couplers, 2
Centering Bushings, 2 0-80 x 1/8” Flat Machine Screws, 2 2-56 x 3/8” Flat Machine
Screws, 2 Bushing Centering Springs, 2 each Assorted Shims, Extra Springs.
This body mounted extended swing gearbox and coupler is designed for
passenger or long freight cars to help negotiate tighter radius curves.
BEFORE ASSEMBLY ALL COUPLERS:
After removing the components from the sprues file off the break away point
and any flash, making sure the inside of the box & V shaped bushing hole is
smooth and burr free. The WHISKER
®
centering spring is a thin wire protruding
at a “V” angle forward from the pivoting hole at the end of the shank. Because
the wire spring is cut by a machine the tips might be sharp and CAUTION must
be taken when handling the coupler. Burnish the coupler shank on both sides.
C O U P L E R A S S E M B LY
INSTRUCTIONS
To assemble the coupler
follow the illustrations in these
instructions. See Fig.1 Hold
the lid, coupler & gearbox
assembly together with Kadee
®
#1020 Tweezers according to
the illustration. Then carefully
insert and tighten the 0-80
screw, a magnetic tip screw
driver helps a great deal.
B U S H I N G A S S E M B LY
INSTRUCTIONS
Burnish the bushing & gearbox
w it h # 231 Grea s - e m. To
assemble the rest of coupler
by following the illustrations in
these instructions. See Fig.1
Insert the centering bushing
and invert the assembly. Use our #241 Dual Tool (Manual Uncoupling Tool &
Spring Pic) and insert it between the last two coils on either end of the spring.
Then slip the end of the spring against the bushing and compress the spring
until you can slip the other end onto the spring notch then withdraw the pick
while holding the spring in place. Carefully set the assembly aside but take care
and keep the bushing in place or the spring will come out. The spring is held in
place by the surface the assembly is mounted on.
MOUNTING INSTRUCTIONS
Prepare the surface for mounting. A smooth flat surface is required for mounting
the gearbox to the cars frame.
Option #1
Use the platform end of our #206 Height Gauge to determine how may shims
will be required to build up the underframe to the proper coupler mounting
height. Use the provided shims to build up underframe to 29/64” glue the shims
in place with styrene cement. Find and scribe the centerline on the mounting
surface and shims.
Option #2
If more truck wheel clearance in needed, and where it’s possible, rather the
shimming the mounting surface down to 29/64” use our #42 or #142 Overset
Coupler in the #451 box in place of the #148. The mounting surface is now 1/2”
above the railtop.
451
Extended Swing Gearbox &
Metal Whisker
®
Coupler
Gearbox
C e n t e r i n g
Bushing
2-56 Screw
0-80 Screw
Centering
Spring
Shim
Gearbox Lid
Coupler
Fig.1
