The inner part of that gear should have splines to lock it to the shaft .. i take it the gear doesnt free wheel ?
How many wires goto that motor ?
If only 2 then there IS not a switch even though the diagram says there is ..
If 4 then there IS a switch .. 2 for the motor and 2 for the micro switch .
The gear doesnt look split .. but it has a mark from the image .. if it locks to the shaft sline then its ok .
Can you power up the motor so that it spins .. connect some wires from the battery or use a power probe .
EDIT ..
Just a thought but can you fit the right hand motor to the wire plug for the left hand .. then operate .. if the right hand motor works when connected to the left side then its still that unit thats at fault .
How many wires goto that motor ?
If only 2 then there IS not a switch even though the diagram says there is ..
If 4 then there IS a switch .. 2 for the motor and 2 for the micro switch .
The gear doesnt look split .. but it has a mark from the image .. if it locks to the shaft sline then its ok .
Can you power up the motor so that it spins .. connect some wires from the battery or use a power probe .
EDIT ..
Just a thought but can you fit the right hand motor to the wire plug for the left hand .. then operate .. if the right hand motor works when connected to the left side then its still that unit thats at fault .