425HD-MD INITIAL SETUP
Assembly
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3-2 425HD-MD/masterdoc101602 425HD-MD INITIAL SETUP
3.1 Assembly
The Model 425HD-MD Articulator requires a minimum amount of assembly before opera-
tion. Follow the steps below to assemble the Articulator:
1. Remove the loose deck (deck 1) and the rocker assembly from the skid.
2. On deck 1, remove the tie wraps which are retaining the bushings in the deck pivot plates,
and in the rocker mount tube.
3. On the drive unit, remove the tie wraps which are retaining the deck belt and deck lift
cable.
4. Remove the 3/4” pin weldments & hardware, and 1/2”-13 x 3” bolts and nuts from the
pivot plates on the deck assembly (deck 4).
5. Install deck 1 onto the deck assembly. Slide the pivot plates on deck 1 between the pivot
plates on deck 4, and slide the trap door (the zinc plated plate located under the rubber
flap) UNDER the edge of deck 4, with the rubber flap riding ON TOP of deck 4. Block up
deck 1 to keep it parallel with deck 4 during assembly. Re-install 3/4” pins and hardware,
and 1/2”-13 x 3” bolts and nuts into front & rear pivot plates. Tighten all hardware. (You
may find it easier to install the rear pivot pin if you lift the rear wheel for greater clear-
ance).
6. Install the deck belt from deck 4 to deck 1. Route the front of the belt around the spindle
pulley on deck 1, then wrap the flat side of the belt back around the flat-faced idler pulley,
then the bevel side of the belt back around the grooved idler pulley, and the back of the
belt returns to deck 4. (Refer to the deck belt illustration on page 5-10 of the operators
maintenance section).
7. Remove the loose 1” pin weldment & hardware from the rocker assembly.
8. Slide the 3/8”-16 x 2” bolt into the pivot bracket from the back side and secure with a
lock-nut.
9. Mount the rocker assembly to deck 1, with the swivel wheel to the front of the deck. Align
the pivot plates on the rocker assembly with the mount collar on the deck. Re-install the
pin weldment and hardware into the rocker mount collar. Tighten all hardware.
10. Mount the rocker pivot limit weldment (on the rear of the rocker assembly) between the
two tabs on deck 1, secure with the clevis pin and hitch pin.
11. Install the deck 1 belt cover using the wing nut and fender washer on the deck.
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