Step 42: Build Tunnel Assembly
Part 2
E: Attach the tops of each Tunnel Side together using 2 (MB1) Pan Bolts (with #12 Lock Nut)
per side. (Fig. 42.4 and 42.5)
F: Join the 2 Tunnel Sides together so the tops are tight together and attach with 12 (MB1) Pan Bolts (with #12
Lock Nut). (Fig. 42.6 and 42.7)
Fig. 42.4
Fig. 42.6
Fig. 42.7
MB1
Hardware
17 x
#12 x 1/2" Bolt (#12 Nut)
MB1
89
Fig. 42.5
MB1
#12 Lock Nut
#12
Lock
Nut