35
Step 13: Back Frame Assembly
A:
Attach (1860) MK Mount to (1873) Back Floor with 1 (H13) 1/4 x 3-1/2” Hex Bolt (with lock washer, flat washer
and t-nut) and to (1857) Top Back with 1 (H12) 1/4 x 3” Hex Bolt (with lock washer, flat washer and t-nut). (fig.
13.1 and 13.2)
B:
Make sure (1857) Top Back is level and the distance between the bottom of (1857) Top Back and the top of
(1873) Back Floor is 28-5/8”, then attach to both (1500) Posts using 4 (S7) #12 x 2” Pan Screws (with 3/16” flat
washers). (fig. 13.2)
Wood Parts
Hardware
Fig. 13.2
4 x
#12 x 2 Pan Screw (3/16” flat washer)
1 x
1/4 x 3” Hex Bolt (1/4” lock washer, 1/4” flat washer, 1/4” t-nut)
1 x
1/4 x 3-1/2” Hex Bolt (1/4” lock washer, 1/4” flat washer, 1/4” t-nut)
1 x
Top Back 1 x 4 x 46-1/2”
1 x
MK Mount 2 x 3 x 34-13/16”
1857
S7
1860
1500
H12
S7
1500
1857
H13
1860
1873
1500
1857
1500
1860
1873
Fig. 13.1
H12
H13
1/4” lock
washer
1/4” flat
washer
1/4” t-nut
1/4” lock
washer
1/4” flat
washer
1/4” t-nut
S7
with 3/16”
flat washer
with 3/16”
flat washer
28-5/8”