Installation Guide

Figure 6
Tapered
surface up
2 to 3 threads
Assemble, lubricate
and install spring bars
Ensure the lift chains (#6) are assembled to the tapered
ends of each spring bar using the 3/8" U-bolts (#13) and
the 3/8" nylock nuts (#14) as shown below in Figure 6. Let
two or three threads of the U-bolts extend out through the
bottom of each locknut. The chain must be free to move
in the U-bolt. Apply a heavy, fibrous grease to the top
section of each of the spring bars. Hold the spring bar (#3)
perpendicular to the shank (#2) with the trunnion ribbed side
up. Insert the bottom knob of the trunnion into the lower
pocket of the head assembly (#3) as show in Figure 7 below.
Rotate the spring bar up so the top knob of the trunnion
passes through the entrance slot in the upper pocket of the
head assembly (#3).
Attaching the trailer to the ball
Using the trailer tongue jack, lower the coupler onto
the trailer ball and close coupler latch. Do not retract
jack fully at this time. Allow the jack to support some
of the tongue weight.
Raise the front of the trailer and back of the tow
vehicle approximately 3" with tongue jack. This
will allow easier installation of the chains on to
the hook of each lift bracket.
Installing the chain lift brackets
The following applies to trailers with an 'A' frame tongue.
Step 1
Position the spring bar, which has been attached to
the hitch head, parallel with the trailer tongue. Hold the
lift chain vertical up alongside the trailer tongue. Position
the lift bracket on the trailer tongue so that the chain is
centered between the lift bracket, as shown below in
Figure 8. Some trailers may have an obstruction on
one side of the frame. Order the offset lift bracket kit from
your local dealer. Follow the installation instructions
supplied with that kit for proper installation.
CAUTION: If chain is angled fore or aft at the top within the
lift bracket, it may catch on the lift bracket when trailer is
turning. This could damage the lift bracket or pry it open.
Step 2
Mark the location of the lift bracket on the trailer tongue.
Step 3
Depending on the width of the frame, install a 1/2" - 13 bolt
(#15 or #16) into the threaded hole in the lift bracket. Turn the
bolt in until it contacts the trailer tongue, then tighten a 1/4
turn with a wrench. Do not overtighten.
The amount of leveling is adjusted by engaging different
spring bar chain links with the lift unit. Follow the steps
below in the "Lift bracket operation" section.
Step 4
Install washers (#20) over short adjustment rod (#18).
Figure 7
Figure 8
Pull up
on chain
Step 5
Install the head on the shank at marked position. Insert the
3/4" -10 x 5 hex bolt (#8) through the 3/4" conical washer (#9)
and then through the lower hole in the head channel. Rotate
the head forward as far as it will go. The ball should be
vertical or tilted slightly back. If it is not, remove the short
adjustment rod (#18) and replace it with the long adjustment
rod (#19). You can also change the number of washers on
the rod and re-assemble. Install the remaining 3/4" -10 x 5"
bolt (#8) with 3/4" conical washer (#9) through the upper
slotted hole. Install a second 3/4" conical washer (#9) on both
bolts. Start 3/4" -10 (#10) nylock nuts and finger tighten only.
Step 6
Tighten top 3/4" - 10 x 5 hex bolt (#8) just enough to hold
head tight against the pin in the head channel. This bolt
will be tightened later.
Step 7
Place head assembly back into
hitch assembly on towing vehicle.
Figure 5
2
10
18
20
9
9
19
8
1
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