Linkage - PRONAR PDK220 Operator's Manual

PRONAR PDK220 SECTION 3

3.3 LINKAGE

FIGURE 3.2 Linkage
(1) - three-point linkage frame; (2) - load-bearing beam; (3) - tensioning spring; (4) - three-
point linkage lower links pin; (5) - central connection pin; (6) - beam rotation lock pin;
The main component of the linkage (FIGURE 3.2) of mower PDK220 is the three-point
linkage frame (1), fitted with two adjustable pins of lower links (4) and a central connection
pin (5) used for attachment to the tractor three-point linkage. Load-bearing beam (2) lifts and
lowers the cutting unit. An adjustable-tension spring (3) is used to relieve load of the cutting
unit. A pin (6) is used to lock the load-bearing arm turned to the transport position.
3.4