Trinity MPS 350, Product Description And Assembly Manual

Page: 21 / 62

www.highwayguardrail.com
Revised: April 18, 2008 20
17 With the MPS 350 in an Up (Traveling) Position, remove the Linchpin and open the Clip on the
end. (See Figure 15.0 Below)
Figure 15.0 MPS 350 Chain Retainer
18 Insert the Chain between the Chain Retainer Tabs. Next, insert the Linchpin through the Chain
Retainer Tabs and Chain. Lock the Clip on the end to secure in place. (See Figure 15.0 Above)
NOTE : Later models of the MPS 350 may be equipped with Protective Chain Covers that do not
allow the Linchpins to restrain the Chains as shown in the Chain Retainer figure. In this
case, the protective covers may be cut in two at the appropriate location to allow the
insertion of the Linchpin.
19 Repeat the Steps 16 and Step 17 above for the second Chain.
20 Center the Plastic Bottom Sheet between the lower “X” braces and match drill holes. Match drill
holes of the Plastic Sideboard Flanges in two places on both sides. Use 3217B - 3/8”x 1” Hex
Bolts, 3257B - 3/8” Whiz Nuts and 3051B - 3/8” Flat Washers to bolt the Plastic Bottom Sheets
to the Plastic Sideboard Flanges.
Figure 16.0 Plastic Bottom Sheet Installation
Chain Retainer Tabs
Plastic Bottom Sheet
Centered Horizontally
Between the Lower “X”
Braces
MPS 350 Safety, Installation, Operation and Maintenance Manual