RPM81382 RPM Traxxas UDR Front Upper A Arm Instructions

Stock

Pivot

Ball

3/8" or 9mm

Socket

#81382 Upper Front A-arms for the Traxxas Unlimited Desert Racer

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Caution: Do not attempt to remove or install A-arm pivot balls in temperatures below 50°F (10°C). Damage to the

RPM A-arm can occur and will not be covered under the terms of the RPM warranty program. In cold temperatures,

place the arms in hot water for about 30 seconds to 1 minute, then install the pivot balls as quickly as possible.

Pivot Ball Removal: The pivot balls in your stock A-arms must be removed and used with your new RPM a-arms.

The easiest way to remove the pivot balls from your stock a-arms is to find a 3/8" (or 9mm) socket, a 3mm screw

(the axle carrier-to-pivot ball screw is a perfect option here) and a vice (slip-joint pliers [a.k.a.

Channel Locks] or vice grip pliers will work if a vice is not available). The illustration

here is for installation, not removal, of the pivot balls. Ignore it for now.

1) Slip the 3mm screw into the pivot ball.

2) Place the socket against the A-arm on the side opposite of the

screw, then capture the socket / a-arm / screw in the vice with one

jaw touching the screw head and the other jaw touching the socket.

3) Carefully tighten the vice until the ball pops out of the a-arm and into

the socket.

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Pivot Ball Installation: 1) Using the socket you used earlier, place it against the

side of the RPM A-arm.

2) Place the pivot ball on the opposite side, then capture everything in the vice

with one jaw touching the pivot ball and the other touching the socket.

3) Carefully tighten until the pivot ball pops into the A-arm.

Installation on Vehicle: RPM A-arms are stock replacement A-arms. They install

exactly opposite of how you removed your stock arms.

Tech Help: 1) If the pivot balls feel tight, pop the pivot balls back out and reinstall them from the

opposite side of the A-arm.

2) The suspension may feel tight initially. Run the truck through a short break-in period and they

should free up within 1 - 3 battery packs.

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#81382 Upper Front A-arms for the Traxxas Unlimited Desert Racer Caution: Do not attempt to remove or install A-arm pivot balls in temperatures below 50°F (10°C). Damage to the RPM A-arm can occur and will not be covered under the terms of the RPM warranty program. In cold temperatures, place the arms in hot water for about 30 seconds to 1 minute, then install the pivot balls as quickly as possible. Pivot Ball Removal: The pivot balls in your stock A-arms must be removed and used with your new RPM a-arms.