KINGPIN/UPPER COUPLER PLATE REPLACEMENT
Ground Boards Emplaced
Locknuts (WP 0080 00-25)
Landing Legs Down
Bolts (WP 0080 00-25)
Washers (WP 0080 00-25)
Semitrailer Disconnected from Prime Mover
General Mechanic's Tool Kit (WP 0077 00-9)
Shop Equipment, Field Maintenance (WP 0077 00-9)
Welder's Tool Kit (WP 0077 00-9)
Kingpin/upper coupler plate weighs 302 lbs. (137 kgs). Caution
must be used during removal and installation to avoid serious
injury or death.
When replacing kingpin, inspect all supporting structures for rust, broken
welds, and proper drainage. Structure area interior must be inspected
and protected against rust. Proper drainage must be maintained to
prevent damage to equipment.
1. Remove front center floor boards according to WP 0061 00-1.
Figure 1. Kingpin/Upper Coupler Plate