Showing items 1 - 15 of 16 results.
A new undercarriage is on order. When checking for the drive unit being centered I found it eas tilted slightly favoring the back.
I had a customer a few years back had a lot of problems with the lower bearing cap that holds the drive unit to the undercarriage. The 5 allen socket head bolts were loosening and breaking off. Sounds like you are having the same problem, but the armature hitting in the motor sounds like a bearing problem in the motor. Good luck with this one
Just gotthe drive unit out the small shims show signs on movement dowel pins look good the threaded top is broken off one. Still do no see enough movement to force the armature to hit. The do not hit when spinning on the floor. Odd
Mine usually cracked from center of motor mount to steer motor and down the back of the carriage. Had one crack below the grease zerk to the front of the carriage. On the second one the drive unit would shift enough to let the tire hit the back of the battery box
I have the motor back out looking for cracks. Will they be visible. Sounds dumb I know.
the motor only has an upper bearing. I have heard and seen the cracked undercarriage bulletin. does the carriage crack in the same spot every time.
Do they crack in the same place?
Might check for a cracked drive carriage. I've had these crack and the drive unit can shift up far enough to hit the frame. Inspected all of my RD5200s, and had 4 of them with cracks in them out of 27.
The matching issue i agree. Should learn more once a pull the motor.
The armature bearings hold the armature dead-center of the motor if the bearings are good and correct. Sounds like a problem with the motor for sure. I don't recall ever having to shim a motor on a Crown RR. I suggest getting a new or rebuilt motor from Crown
If the armature is hitting the field frames there is obviously a bearing problem in the motor, and also the drive unit. Very strange problem. Maybe the motor and drive unit aren't matched correctly.
The motor rebuilder said the fan would hit before the armature. I am wondering avmbout a shimming issue.
Them motor does not bing at all free wheeling. I am going to pull the motor again and triple check the drive unit bearing. I did switch the pedestal from a doner truck. Crown stats they have had no issues with there rebuild 36volt drive units. Which this is.
Oh, I see. Sounds like it's just time to buy a lot of new parts - Good luck!
Ok the shaking is the armature hitting the fields. It causes the motor to go crazy. The motor is not lined up with the drive unit. I tried actually tilting the motor pedestal and the motor quiets down. I shimmed it in that position in desperation. It lasted 2 hours and started rubbing again. I loosened the drive unit bolts and checked the dowel pins and the suffrage for cracks.
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