09-10-2017, 07:01 PM
We have a bit of a break from excursions in September, so we will be getting to some maintenance on 664. For the last few years she has been the only operating power in the park, so she has handled everything from shop switching and yard shuttles to excursions. This has taken a toll on her, and now with 663 and the 26 running we can be getting around to some shop time for her. This will involve swapping out her cooling fan controls and cleaning out the #3 traction motor as it is once again filling with oil. This morning was spent prepping the rear truck to be dropped for the motor cleaning.
This includes separating the airlines that control the brakes. Behind and underneath these (not visible in the pic) are two bolts which must also be removed.
Disconnecting the sand lines, There are two of these on the outboard axle of each truck.
Separating the electrical leads to each motor. This is the #4 motor at the rear of the engine. With the draft gear in the way it is not an easy task. Notice the dry look of the truck on this side .
Remember the look of the #4 motor, #3 is covered in oil. This is a common problem on F units, where engine oil from the sump leaks into the baffle of the traction motor blower. This then blows it all over the #3 armature causing all kinds of trouble. During last winter we built a dam to stop this from happening, but we did not have the time to clean out the motor before the excursion season.
664 will be going over the drop table on Wednesday for the cleaning and reinstallation of the truck. As a little extra note,,, there are four electrical connections. Two for the armature ( A and AA ) and two for the field windings ( F and FF ). You can see the labels on the traction motor housing. The extra smaller wire is a ground that attaches to the underside of the unit.
This includes separating the airlines that control the brakes. Behind and underneath these (not visible in the pic) are two bolts which must also be removed.
Disconnecting the sand lines, There are two of these on the outboard axle of each truck.
Separating the electrical leads to each motor. This is the #4 motor at the rear of the engine. With the draft gear in the way it is not an easy task. Notice the dry look of the truck on this side .
Remember the look of the #4 motor, #3 is covered in oil. This is a common problem on F units, where engine oil from the sump leaks into the baffle of the traction motor blower. This then blows it all over the #3 armature causing all kinds of trouble. During last winter we built a dam to stop this from happening, but we did not have the time to clean out the motor before the excursion season.
664 will be going over the drop table on Wednesday for the cleaning and reinstallation of the truck. As a little extra note,,, there are four electrical connections. Two for the armature ( A and AA ) and two for the field windings ( F and FF ). You can see the labels on the traction motor housing. The extra smaller wire is a ground that attaches to the underside of the unit.
My other car is a locomotive, ARHS restoration crew