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#32
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Rockola 440 Gripper and Magazine Motor Blowing Fuses
Hi, I just want to be clear so I don't screw up. Do I turn it while pulling it away out of the gear box? --Or do I have to open or remove the gear box too? The drawing shows a little ball bearing at the tip of the motor shaft in the gear box. Do I try to keep that balanced on the tip of the shaft when I remove it? Thank you
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#33
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Rockola 440 Gripper and Magazine Motor Blowing Fuses
On 10/02/2014, 10:18 AM, wrote:
Hi, I just want to be clear so I don't screw up. Do I turn it while pulling it away out of the gear box? --Or do I have to open or remove the gear box too? The drawing shows a little ball bearing at the tip of the motor shaft in the gear box. Do I try to keep that balanced on the tip of the shaft when I remove it? Thank you Hi, if you are asking about removing the motor armature from the housing then you can normally simply pull it out the rear once the cover is off and the brushes removed. In some cases you have to remove the brush holding assembly which would be held in place with two screws, however if the opening is large enough for the body of the armature to pass though then you are OK. You can turn the armature if you like, but the gears should be loose enough to simply pull out the armature when the motor is removed from the machine. As for the small ball bearing on the end of the shaft - this is held in place with some grease when you put it back. Not all motors have the ball bearing, if there is a ball bearing then the end cap against which the ball bearing rests is usually adjustable and held in place by a small Allen (usually) head setscrew. Watch out for any shims on the shaft! They must go back in the same positions (front shims vs. rear shims). Fresh grease on the gears is a good idea - molylube is good (I think). And non-detergent 20W oil for the motor bushings and shaft - keeping armature dry of course! John :-#)# -- (Please post followups or tech inquiries to the newsgroup) John's Jukes Ltd. 2343 Main St., Vancouver, BC, Canada V5T 3C9 (604)872-5757 or Fax 872-2010 (Pinballs, Jukes, Video Games) www.flippers.com "Old pinballers never die, they just flip out." |
#34
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Rockola 440 Gripper and Magazine Motor Blowing Fuses
Perfect. You really know this stuff! Separately, the unit has 2 AA batteries to remember the top 3 selections. --they look to be fresh and working. Under the turn table is an old battery wired in--the manual labels it as a battery pack. I'm guessing that this hasn't worked in years. Any idea what it's purpose is? Perhaps to finish a cycle if it gets unplugged? I'm guessing that there is a trickle charge to it.?
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#35
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Rockola 440 Gripper and Magazine Motor Blowing Fuses
On 10/02/2014, 10:55 AM, wrote:
Perfect. You really know this stuff! Separately, the unit has 2 AA batteries to remember the top 3 selections. --they look to be fresh and working. Under the turn table is an old battery wired in--the manual labels it as a battery pack. I'm guessing that this hasn't worked in years. Any idea what it's purpose is? Perhaps to finish a cycle if it gets unplugged? I'm guessing that there is a trickle charge to it.? Sorry, I don't know the purpose of that second battery pack... John :-#)# -- (Please post followups or tech inquiries to the newsgroup) John's Jukes Ltd. 2343 Main St., Vancouver, BC, Canada V5T 3C9 (604)872-5757 or Fax 872-2010 (Pinballs, Jukes, Video Games) www.flippers.com "Old pinballers never die, they just flip out." |
#36
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Rockola 440 Gripper and Magazine Motor Blowing Fuses
John I feel very dumb. I just checked eBay to see what a used motor might cost and learned that the gear box is part of the motor. I thought that they were two separate things and that I could remove the motor from the jukebox and leave the gearbox in. I get it now. I have a lot to learn.
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#37
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Rockola 440 Gripper and Magazine Motor Blowing Fuses
On 10/02/2014, 12:03 PM, wrote:
John I feel very dumb. I just checked eBay to see what a used motor might cost and learned that the gear box is part of the motor. I thought that they were two separate things and that I could remove the motor from the jukebox and leave the gearbox in. I get it now. I have a lot to learn. No problem, every day is a school day for me too! Gotta love fixing stuff, eh? John :-#)# -- (Please post followups or tech inquiries to the newsgroup) John's Jukes Ltd. 2343 Main St., Vancouver, BC, Canada V5T 3C9 (604)872-5757 or Fax 872-2010 (Pinballs, Jukes, Video Games) www.flippers.com "Old pinballers never die, they just flip out." |
#38
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Rockola 440 Gripper and Magazine Motor Blowing Fuses
John,
After about 200 plays the circuit breaker started popping. I tried my voodoo again with an external supply and it worked for about 40 plays--then the breaker started popping again. I pulled it out and, without a load it was a hair over 2 amps. I took the motor apart per your instructions. You were exactly, 100%, without any question, correct. I cleaned all the lose dust out and found an old razor blade in a parts drawer and worked with some magnifying goggles for about 20 minutes. Then I used a toothbrush to get anything left. Amps came down under .25 . I just installed it into the machine and I'm amazed how FAST it loads and unloads the record! Thankfully the other motor is drawing .25 because it looks too buried to remove. John, I couldn't have done this without you and this thread. Regards, John |
#39
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Rockola 440 Gripper and Magazine Motor Blowing Fuses
On 10/06/2014, 5:39 PM, wrote:
John, After about 200 plays the circuit breaker started popping. I tried my voodoo again with an external supply and it worked for about 40 plays--then the breaker started popping again. I pulled it out and, without a load it was a hair over 2 amps. I took the motor apart per your instructions. You were exactly, 100%, without any question, correct. I cleaned all the lose dust out and found an old razor blade in a parts drawer and worked with some magnifying goggles for about 20 minutes. Then I used a toothbrush to get anything left. Amps came down under .25 . I just installed it into the machine and I'm amazed how FAST it loads and unloads the record! Thankfully the other motor is drawing .25 because it looks too buried to remove. John, I couldn't have done this without you and this thread. Regards, John Glad to help! John :-#)# -- (Please post followups or tech inquiries to the newsgroup) John's Jukes Ltd. 2343 Main St., Vancouver, BC, Canada V5T 3C9 (604)872-5757 or Fax 872-2010 (Pinballs, Jukes, Video Games) www.flippers.com "Old pinballers never die, they just flip out." |
#40
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Rockola 440 Gripper and Magazine Motor Blowing Fuses
On Tuesday, October 7, 2014 at 3:26:29 PM UTC+11, John Robertson wrote:
On 10/06/2014, 5:39 PM, wrote: John, After about 200 plays the circuit breaker started popping. I tried my voodoo again with an external supply and it worked for about 40 plays--then the breaker started popping again. I pulled it out and, without a load it was a hair over 2 amps. I took the motor apart per your instructions. You were exactly, 100%, without any question, correct. I cleaned all the lose dust out and found an old razor blade in a parts drawer and worked with some magnifying goggles for about 20 minutes. Then I used a toothbrush to get anything left. Amps came down under .25 . I just installed it into the machine and I'm amazed how FAST it loads and unloads the record! Thankfully the other motor is drawing .25 because it looks too buried to remove. John, I couldn't have done this without you and this thread. Regards, John Glad to help! John :-#)# -- (Please post followups or tech inquiries to the newsgroup) John's Jukes Ltd. 2343 Main St., Vancouver, BC, Canada V5T 3C9 (604)872-5757 or Fax 872-2010 (Pinballs, Jukes, Video Games) www.flippers.com "Old pinballers never die, they just flip out." Hi John, I have an issue with a Rockola 484 with 11 VAC present at the gripper motor plug !!! I believe it should be around 28VDC. Would appreciate if you could give me a direction to look where this is supplied from Regards Stewart Australia |
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