I plan to run my MPC era GP-9 alot more than my older F-3 to save some wear an tear. The gears are ok now, but should they break or strip out in the future, are they sourceable, and is it hard to replace them? I can see how to take apart the truck and axles on this one. Seems it is pinned and then peened over to keep the truck together. Looks like a real chore to get that apart. Any input on this?
The gears are available - the worm gear is 8010-115, & replacements are available in brass. The drive gear is 8010-116, the idlers/pinions are 8010-117.
I've never had a failure. The worst problem I have had on the GP-9 series was a 8010-116 gear that popped off, I just cleaned it and used a dab of epoxy to secure it back to the worm axle/shaft.
Rob
ADCX Rob The gears are available - the worm gear is 8010-115, & replacements are available in brass. The drive gear is 8010-116, the idlers/pinions are 8010-117. I've never had a failure. The worst problem I have had on the GP-9 series was a 8010-116 gear that popped off, I just cleaned it and used a dab of epoxy to secure it back to the worm axle/shaft. Rob
Same here but used Super Glue when I got it cleaned good. No more problem.
God bless TCA 05-58541 Benefactor Member of the NRA, Member of the American Legion, Retired Boss Hog of Roseyville , KC&D Qualified
I have had to replace exactly one 8010-115 worm gear.I think way too much of an issue is made over the plastic gears.A little while ago, I picked up a junk box containing a couple of MPC Geep motors that were so worn, that the gears which are cast into the backs of the wheels were worn down to thin, sharp points. Those trucks had plastic bushings on one side, and metal bushings on the other. The gear wheels and metal bushings needed to be replaced. All the plastic gears were just fine, as were the plastic bushings. Getting to those parts is a pain in the rear. So far, I've done it by unstaking the motor field / sideframe plate from the lower part of the truck. The work could also be done by removing the sideframes from the sideframe plate. But I think the unstaking method is less visible after the repair is complete.I am always looking to learn something new. How do other folks break down these trucks so the wheels can be removed?
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