<p>Check if <a href="http://brickset.com/parts/4211775" rel="nofollow">Cross Block 90°</a> that is placed in step 53 of instruction book 1 is in the correct orientation with the round hole placed over the motor axle. </p>

<p>Mounting it the other way will prevent rotation of the motor. </p>

CC BY-SA 3.0
2015-02-05T20:05:42.757Z
YOU DID! Solved! One piece in a wrong position and everything locked. Thanks a lot!
Cezar
CC BY-SA 3.0
2015-02-06T09:30:53.703Z
@Cezar Then you should also mark this answer as the correct one to give Joost proper credit!
adius
CC BY-SA 3.0
2015-02-02T18:30:10.967Z
2015-02-02T18:30:10.967Z
Joost
<p>I've just finished <a href="http://brickset.com/sets/9398-1" rel="nofollow">9398 4x4 Crawler</a>. The rear motor works properly, but the front motor doesn't: The wheels seem to be locked, although they spin freely when I turn them by hand.
What could be the problem?</p>

CC BY-SA 3.0
2017-03-14T09:41:42.203Z
In my version of the set, there is an extra sheet pointing towards this particular piece. It is not a mistake in the instruction, but they put in an additional picture to clarify how it is done correctly.
Metalbeard
<technic>
9398 problem with the front wheels
Cezar
# 9398 problem with the front wheels

(Asked by: username_0 on 2015-02-02)

I've just finished [9398 4x4 Crawler](http://brickset.com/sets/9398-1). The rear motor works properly, but the front motor doesn't: The wheels seem to be locked, although they spin freely when I turn them by hand.
What could be the problem?

**Tags:** technic

> **Comments:**
> **username_1**: In my version of the set, there is an extra sheet pointing towards this particular piece. It is not a mistake in the instruction, but they put in an additional picture to clarify how it is done correctly.  

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## 1 answers

### Answer by username_2 on 2015-02-02. Score: 4

Check if [Cross Block 90°](http://brickset.com/parts/4211775) that is placed in step 53 of instruction book 1 is in the correct orientation with the round hole placed over the motor axle.

Mounting it the other way will prevent rotation of the motor.

> **Comments:**
> **username_0**: YOU DID! Solved! One piece in a wrong position and everything locked. Thanks a lot!  
> **username_3**: @username_0 Then you should also mark this answer as the correct one to give username_2 proper credit!  

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