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Re: MF248 (RM48) mowing deck

Posted: Wed Apr 30, 2025 10:16 pm
by myerslawnandgarden
Very similar to the C42389 factory kit. I guess great minds think alike. I can open a kit and post a picture if anyone is interested.

Bob

Re: MF248 (RM48) mowing deck

Posted: Mon May 12, 2025 9:58 pm
by MattA
Slow progress due to my schedule lately. I did get the new bearings installed. I'm having trouble with the center spindle housing. It was replaced with a steel housing part number C17866. It's the type with internal snap rings. Anyways I can push the bearings in by hand and pull them out with one finger. When fully assembled I can pull the pulley assembly up and down about 1/8". It's got the bearing spacer and pulley side spacers installed and the length of those parts is good. I've got another pair of aluminum spindle housings and a spare center pulley assembly I can check for dimensions. I also discovered another blade adapter is missing a chunk :headbash:
20250511_165908.jpg
20250512_190043.jpg

Re: MF248 (RM48) mowing deck

Posted: Thu May 15, 2025 1:59 pm
by MattA
I swapped out the steel spindle housing for the best aluminum spindle housing I had laying around. Bearings fit good and tight. That vertical play in the spindle assembly is also gone. I did check the existing pulley assembly shaft length up to the top side spacer against another one I had laying around. The length difference was only a few thousandths of an inch not the 1/8" plus in movement I was seeing with the steel spindle housing. Just realized the aluminum spindle housings I put in has no grease fitting but the other two do. I will get one added.
Getting closer...
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Re: MF248 (RM48) mowing deck

Posted: Sat May 17, 2025 8:52 pm
by MattA
I wrapped up the MF248 deck today with the same modified internal belt drive I did on my RM48.
viewtopic.php?f=18&t=1144&p=22829#p22829
I didn't take many pictures but it's the same thing I did last time.
20250517_175513.jpg
I put the deck on my tractor with the existing RM48 mule drive and leveled the deck. I used it to cut my overgrown lawn. It's been 17 days since the last cut... mostly due to work schedules and mothers day. Parts of my lawn were 12-15" high. The mulching deck did well. In the really deep thick grass I was down to a slow crawl (lack of engine power) and had to run over it again later on. Should work good for weekly mowings.
The modified belt drive works well. I've been running the setup on my RM48 deck for a year now.

Re: MF248 (RM48) mowing deck

Posted: Wed May 28, 2025 8:50 am
by MattA
myerslawnandgarden wrote: Wed Apr 30, 2025 10:16 pm Very similar to the C42389 factory kit. I guess great minds think alike. I can open a kit and post a picture if anyone is interested.

Bob
Meant to post this a while back. Found this online. C42389 factory kit.
s-l1600.jpg

Re: MF248 (RM48) mowing deck

Posted: Wed May 28, 2025 10:51 pm
by myerslawnandgarden
MattA wrote: Wed May 28, 2025 8:50 am
myerslawnandgarden wrote: Wed Apr 30, 2025 10:16 pm Very similar to the C42389 factory kit. I guess great minds think alike. I can open a kit and post a picture if anyone is interested.

Bob
Meant to post this a while back. Found this online. C42389 factory kit.
s-l1600.jpg
Yep, that's it. There was a service bulletin regarding this kit some years back. I think we still may have some in stock at the last price of $44.80.

Bob