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Thread: RC4WD Hammer transfer case failure.

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Old 07-31-2019, 08:03 AM   #1
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Default RC4WD Hammer transfer case failure.

Have any of you guys had problems with the Hammer transfer case?

I was doing some light crawling with my stock TF2 and all of a sudden no more output from the Hammer. Input shaft spins freely, but no output.

I haven't opened it up yet, and was wondering what to expect.

thanks....mark
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Old 07-31-2019, 11:08 AM   #2
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Default Re: RC4WD Hammer transfer case failure.

I have not, but I completely tore down and rebuilt my TF2 RTR before driving it....ok well I did drive it around the yard and giggle like a little kid.

Gears are machined on the shafts, so I'd just buy a new complete case to swap out (but go through it before installation), use the old one for parts if needed. The bearings are only metal shielded not rubber sealed, but I'll replace them later, added one drop good oil to each stock bearing on mine as well as clean, regrease with good grease, replaced all the butter soft stock screws.
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Old 08-01-2019, 08:53 AM   #3
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Default Re: RC4WD Hammer transfer case failure.

It turns out that the set screw for the transmission shaft decided to go awol. I've got stainless ones and loctite on the way.
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Old 10-21-2019, 12:25 PM   #4
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Default Re: RC4WD Hammer transfer case failure.

Thanks for update, easy fix at least, but don't use SS fasteners because they are weaker and the drive head is more easily rounded out ime...drilled out too many stainless fasteners that failed. Tried many brands and meh. Definitely use Loctite though.
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Old 10-21-2019, 06:14 PM   #5
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Default Re: RC4WD Hammer transfer case failure.

Quote:
Originally Posted by Natedog View Post
Thanks for update, easy fix at least, but don't use SS fasteners because they are weaker and the drive head is more easily rounded out ime...drilled out too many stainless fasteners that failed. Tried many brands and meh. Definitely use Loctite though.
I'm new to crawlers, so this is bound to sounds like a stupid question...but, here goes. If not SS, then what???

~ More peace, love, laughter, & kindness would make the world a MUCH better place

Last edited by Panther6834; 10-21-2019 at 08:01 PM.
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Old 10-21-2019, 08:00 PM   #6
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Default Re: RC4WD Hammer transfer case failure.

Quote:
Originally Posted by Panther6834 View Post
I'm new to crackers, so this is bound to sounds like a stupid question...but, here goes. If not SS, then what???

~ More peace, love, laughter, & kindness would make the world a MUCH better place
I use black oxide coated steel hardware except for the occasional low-stress areas.

(...crackers?)
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Old 10-21-2019, 08:02 PM   #7
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Default Re: RC4WD Hammer transfer case failure.

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Originally Posted by durok View Post

(...crackers?)
My phone had a typo problem...since been corrected...lol

~ More peace, love, laughter, & kindness would make the world a MUCH better place
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Old 11-07-2019, 06:16 PM   #8
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Default Re: RC4WD Hammer transfer case failure.

Quote:
Originally Posted by Panther6834 View Post
I'm new to crawlers, so this is bound to sounds like a stupid question...but, here goes. If not SS, then what???
SS = Stainless steel.

Quote:
Originally Posted by durok View Post
I use black oxide coated steel hardware....
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