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View Full Version : RD6 pony motor clutch stuck to disc and pinion will not disengage



scooter3
10-24-2016, 08:13 PM
Good evening,
I have not used and been working on my 1937 RD6 and left the pony clutch and pinion engaged to turn it while working on it for the past two years. Now, the clutch stuck to disc and will not disengage even though the levers are moved to the disengage position.
Anyone know if I can reach the clutch to peel it off?

I am hoping to access those parts when removing the clutch adjustment hatch.
Please let me know.
Thanks,
Scooter

chuckb
10-24-2016, 08:34 PM
the pinion will not disengage by itself you have get to the backside and manually pry the locking jaws apart it disengages automatically when the engine starts due to centrifigal force the clutch disc should be loose when disengaged unless stuck maybe sone tapping in that area to break free

scooter3
10-24-2016, 08:47 PM
Thank you for the reply. You beat me to my edit removing the pinion question because I found a youtube video from Squatch253 showing how all that works. I never knew before, because the clutch has never been stuck.
I will try to fix it tomorrow.
Thanks,
Scooter

Wombat
10-25-2016, 02:17 AM
To free the clutch, back the adjustment right off and start and run pilot motor, it will come free, then adjust back up. Always push the clutch lever into the disengaged position after starting.

scooter3
10-25-2016, 08:39 PM
Good evening,
Thank you for the reply. I cant start it because the pinion is already engaged and it is too hard to turn. I have already backed it off and tapping around in there and it has not come loose. I found water in the bottom of the bell housing. Not enough to touch the clutch, but enough to cause high humidity in there.
I cant tell if the clutch disc is stuck, or the pinion shaft is stuck in the pony flywheel pilot bearing.
I may not be able to get to it tomorrow, but will let you know how it goes.
Thanks,
Scooter

I was able to unlatch the pinion by removing the pinion engaging pivot that is under the tank and sticking a bent several inch long screwdriver under the front of each latch and pulling up. Mark the one that is done first to avoid confusion because the starter crank is perhaps 2:1.
I started the motor and let it run a bit, but still cant get it loose. I ran out of light outside, so I do not know yet if it is the clutch disc or the shaft stuck in the pilot bearing. I will try again this tomorrow.

scooter3
10-28-2016, 08:03 PM
Good evening,
After many attempts to free the clutch, I used a 12" v pulley and made a rope starter with an adapter to replace the crank on the pony motor and was able to start it. I left it run with the main engine under compression and the clutch released for a few minutes and it freed up. Thank you for the suggestion. I was able to finish my project finally.
Thank you.
Scooter

Lance Jones
10-31-2016, 12:10 PM
Not sure exactly how RD6 clutch setup is , but I expect it is similar in design to D2 and D4's . My D2 was Stuck and when You started Pilot motor the Main turned at same Time. .Believe me I read the Instruction book and it said if sticky or stuck , drain Oil and fill with Kero. Did that and it released in a few seconds and No trouble since . Then I replaced Kero. with Tellus Oil [Hyd oil ] LJ

Neil
10-31-2016, 06:35 PM
I've started cleaning parts with kerosine and it's quite "caustic" - seems to soften up some types of plastic pretty well if left, but it leaves enough of a film to provide some short term protection. It's a bit smelly but other than that works quite well for me.