Dynojet 424xLC2: Installation Guide - Manual (Page 176)

A P P E N D I X D
Bridge Extension Installation
Above Ground Model 424x/424xLC
2
Automotive Dynamometer Installation Guide
D-4
5 Place the runner clamp on top of the extended runner mount.
Note: The extended runner clamps used with the bridge extension are smaller
and rectangular shaped compared to the standard runner clamps. Be sure to use
the correct runner clamps.
6 With two brace mounts under the extended runner mount, secure the runner
clamp and brace mounts using two 3/8 x 1.5-inch flange head bolts and two 
3/8-inch nylock nuts each.
Note: Be sure to use the hole locations shown in Figure D-3.
Figure D-3: Install the Runner Clamp and Brace Mounts
A 563 D
runner clamp
brace mounts
(under the extended
runner mount)
extended runner
mount