Instructions

TRX-4
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29
T-LOCK SERVO INSTALLATION
The TRX-4’s T-Lock differential control servos are installed and pre-set
at the factory. If you need to remove the servos or the servo horns for
maintenance or cleaning, carefully note their orientation when you
reinstall them to make certain the T-Lock system operates properly.
Before reinstalling the spring-loaded servo horns, reset the servos’
output shafts to the “diffs open” position.
1.
Switch the transmitter and receiver on and plug the T-Lock servos
into their correct positions on the receiver unit (see page 12).
2.
Operate the transmitter’s T-Lock switch to make certain both servos
operate properly, then place the switch in the “open” position for
unlocked front and rear diffs (see page 21).
3.
Install the servo horns as shown below. Switch the transmitter and
on-board electronics off before completing the installation.
Front Differential T-Lock Servo
Differential Open: Install the spring-
loaded servo horn so the spring slot is
perpendicular to the linkage as shown.
Differential Locked: Switch the
transmitter and receiver on. Move the
T-Lock switch to the middle position
to lock the front differential. Confirm
that the servo’s output shaft turns
counterclockwise to rotate the servo
horn to the position shown.
Rear Differential T-Lock Servo
Differential Open: Install the spring-loaded
servo horn so the spring slot is parallel to
the linkage as shown.
Differential Locked: Switch the transmitter
and receiver on. Move the T-Lock switch to
the forward-most position to lock the rear
differential. Confirm that the servo’s output
shaft turns counterclockwise to rotate the
servo horn to the position shown.
FITTING AFTERMARKET BODIES
Rear Shock Tower
The rear shock tower can be installed in two different locations and
in two orientations each. This is to allow precise angle adjustment
of the rear shocks. The shock cap hollow balls can also be replaced
with offset versions (part #5355, sold separately) to further fine
tune the shock angle.
TUNING ADJUSTMENTS
Open
Locked
Front of
Truck
Front of
Truck
Open
Locked
Front of
Truck
Front of
Truck