Setup Instructions

Page 28 Setup Instructions
Two Wheel Brake Kit Installation
Procedure (Outer Brakes)
1. The MH-400 must be stable. Start by carefully
raising and safely supporting the MH-400 off the
ground, so that the four tires are off the ground by
about 5 cm (2 in) (Figures 53 and 54).
2. Remove outside wheel on the left and right side of
the unit.
3. Remove the dust cap, cotter pin, bearing tension nut,
and washer.
4. Lastly, remove the hub assembly. The spindle and a
fastening plate will be left (Figure 56).
5. Check all bearings and races. Replace them if
necessary.
6. Ensure that the hubs are free of moisture and dirt.
Repack components with grease before re-installing.
Note – You must scrape the paint off of the hub and drum
(where they contact each other) to make the drum fit
properly.
7. Mount the inner side of the hub assembly onto the
outside of the drum using six flathead bolts (allen
key style, 12.5 x 31.25 mm [½ x 1½ in]). Thread the
bolts by hand from the inside of the drum before
using an impact tool (Figure 57).
8. Torque in a crossover pattern (same as a tire) to
13.8 kg/m (100 ft-lb).
9. Install the dust cover onto the axle, ensuring that the
adjusting hole on the brake shoe is on the bottom
(Figure 55).
10. Install the correct brake shoe with the backing plate
against the dust cover. Ensure that the magnet arm
faces the front of the MH-400 and the magnet is on
the bottom (Figure 49). Remember that the 6.25 mm
(¼ in) bolt welded on the mounting shaft faces the
front of the MH-400.
11. Run the two wires through the back side hole in the
backing plate and through the hole in the dust cover.
12. Install the four 12.5 x 31.25 mm (½ x 1½ in) bolts
from the back side, using the nylon locking nuts on
the inside of the brake shoe assembly. Torque to
15.2kg-m (110ft-lbs).
Note – Do not use air tools when tightening the backing
plate and shoe assembly.
13. Install the hub and drum assembly onto the spindle.
14. Adjust the wheel bearings as you would for any other
axle assembly (Figure 59).
15. Install the cotter pin and a new dust cap.
16. Remount the tire.
17. Repeat the above steps for the tire and brake
assembly on the other side of the unit.
18. Torque the tire assemblies to 13.8 kg/m (100 ft-lb).
19. Before lowering the MH-400, set the brakes to
slightly drag on the drum.
Follow these steps for both the left and right brake shoe
assemblies:
20. Take the white wire and crimp it into the end of a
shrink connector.
21. Take the red wire and crimp it into the end of a
shrink connector.
22. Take the 2-prong quick-connect plugs and pull them
apart (Figure 60).
23. Crimp the red male wire plug into a shrink connector
from the brake shoe, and crimp the white wire plug
into the other shrink connector.
24. Heat the shrink connectors with a torch or hot air
dryer until they shrink tight onto the wire.
25. Attach the wiring from the drum to the bottom
6.25 mm (¼ in) bolt with a wire clamp and a
6.25 mm (¼ in) nylon locking nut.
26. Attach the wiring to the front 6.25 mm (¼ in) bolt
with the wire clamp and the 6.25 mm (¼ in) nylon
locking nut.