PAGE 2.1 - 38 OPERATION MARK IV HD J2 TAMPER
REVISED 10 - 2020 CONTROLS BULLETIN 5082505
2.1
2.1.8 Operator Armrest Controls - Left - See Figure 2.1-32
The Operator’s Left Armrest Controls are located on the left side of the Operator’s Seat. The
Operator’s Left Armrest Controls consists of the following controls:
(1) Service Brake Lever
Move the lever REARWARD to APPLY the service brakes. Moving the lever further rearward
will result in more braking force. Move the lever FORWARD to RELEASE the service brakes.
The lever must be moved fully forward when propelling or the brakes will be partially applied.
a. Important: Always RELEASE the service brakes (lever moved fully FORWARD)
when the parking brakes are APPLIED or machine may roll.
b. The machine is equipped with red brake lights on both the front and rear of the cab
roof that will turn ON when the service brakes are applied.
(2) Workhead Joystick - Left - Work Mode
When the joystick is moved to the LEFT, the left workhead will move laterally (traverse) to the
LEFT. When the joystick is moved to the RIGHT, the left workhead will move laterally (traverse)
to the RIGHT. Release the joystick to stop moving the left workhead in either direction.
When the joystick is pushed FORWARD, the left workhead will raise to its upper setting and
stop. Release the joystick and push FORWARD again to bypass the upper setting to raise the
left workhead higher. When the joystick is pulled REARWARD, the left workhead will lower and
stop at its lower setting. Release the joystick to stop moving the left workhead in either direction.
(3) Combo Clamp Joystick - Left - Work Mode
When the joystick is moved to the LEFT, the left combo clamp hook will move laterally to the left
(OUT) to its outer limit switch setting and stop. When the joystick is moved to the RIGHT, the
hook will move laterally to the right (IN). Release the joystick to stop moving the left combo
clamp hook in either direction.
When the joystick is pushed FORWARD, the left combo clamp hook will raise to its upper limit
switch setting and stop. Release the joystick and push FORWARD again to bypass the upper
limit switch setting to raise the left combo clamp hook higher. When the joystick is pulled
REARWARD, the left combo clamp hook will lower to its lower limit switch setting and stop.
Release and pull REARWARD again to bypass the lower limit switch setting to lower the left
combo clamp hook lower. Release the joystick to stop moving the left combo clamp hook in
either direction.
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