is this a grenaded starter bearing?

[Brandon Ryder]

I went to change the starter contacts due to an occasional no-start. After changing the contacts I found this in the starter. Some of the bearings are rolling around without a cage and some are in a cage. It sure looks grenaded to me. Do I need a new starter?

 

[katit]

You need to take it apart and see what's inside. If it's just a bearing it ca be replaced.

Builds - Katit's LX470 2001 restoration/maintenance thread

For the a/c drain line, i'm going to install this: 100/120-Series AC Drain Extension Kit — CRUISER GARAGE i saw it on another thread. My truck came from the North, so it's a bit rusty, but the sway bar bracket is rotting as a result of the usual rust in addition to the constant dripping over...

forum.ih8mud.com

You can buy pretty much every part

 

[Brandon Ryder]

any idea where to get the bearing?

starter had been good 99x out of 100. would like to rebuild. it's original starter. 285k miles.

napa has a denso brand for 162 +core. might just have to do that. won't get it until tomorrow. unfortunately won't get it buttoned back up today as i had planned. unless that bearing is readily available...

 

[Gr3G]

Yep, that's a dead bearing. I would think someone like Motion industries or Fastenal or MSC would be able to get that sized bearing from a good manufacturer. (Timken, Koyo, SKF, etc.) All they would need to figure out the part number would be bearing type (single row ball bearing, taper bearing, cylindrical roller bearing, etc), OD, ID, and width of the bearing. These dimensions should be in just about any manufacturers bearing catalogs. I can't imagine it being a special or proprietary bearing. But I could be wrong. You might also find the bearing number on the outer race of the bearing if you pull it out of the housing.

 

[kruisinkid]

have you not been hearing a somewhat awful starter sound about half the time you start the truck? mine started making a nasty noise 7/10 times. some searching here told me my bearing seal is loose or gone. new starter in my future. at 223k i dont have the time to do anything more than remove and replace. rockauto has a reman'd for $96+core denso

 

[Brandon Ryder]

i found that the assembly this bearing is attached to is sold by Toyota. it's got 2 bearings and some gears all mounted to it.
28011-50060
CLUTCH SUB-ASSY, STARTER

problem is it's nearly $100. not really worth it when the remanded starter isn't much more. i have a new starter on the way but ill probably keep my old one and try to find the bearing used. unfortunately no part numbers on the bearing itself. it has no seal or shield.

 

[Gr3G]

That figures. I don't know how similar the 100 series starters are to the 80 series starter but I did find a thread that goes a bit more in depth with the starter reman. Might be a fruitless effort though. I can't image the bearings themselves being more than a few dollars each.

2.2kW Starter Rebuild

I recently picked up a used 2.2kW starter (244k) and rebuilt it so I figured I'd document it. Thanks to Kernal for alot of help with the process. First, a little about the 2.2kW starter. There are 3 types of starters for the FZJ80: 1.4kW: ???? 2.0kW: 28100-66060 2.2kW: 28100-66050 The 2.2kW...

forum.ih8mud.com

I forget the specific bearing nomenclatures for sealed, shielded, or whatever. Putting a sealed bearing in that location may improve lifespan of the bearing since there isn't a way to really service the bearings. But they already last quite a while so it probably wouldn't be noticed. I would be interested in what measurements you find from the bearings.

 

[Eyedaho]

Use an Impact Screwdriver like this to remove those two screws, or you may strip out the heads. Pull it apart and take out that clutch assembly. Push on the shaft from the back to fully extend the pinion gear. Put a small hose clamp on the shaft to hold the pinion gear in the extended position. Push down on the gear and it will slide down a little and give you access to that snap ring on the end of the shaft. Remove that snap ring, and the pinion will come off and give you access to press that bearing off of the shaft. Look for a part number on the bearing or take measurements, and try to find a replacement. Maybe try here: Denso Starter Parts. I just got new armature bearings and boots from them, and it was pretty cheap and relatively quick. Under product information/specifics, they have bearing dimensions listed.

 

[Brandon Ryder]

Picked up my remaned Denso starter. It has a sealed bearing. It's s koyo bearing. 6004rkh-1. should be able to buy same bearing for the old starter.

 

[Gr3G]

Any 6004 sized bearing should fit in that application.
OD= 42mm
ID (bore)= 20mm
Width= 12mm

 

[katit]

I wouldn't just think it's bearing only. After disassembly check gear assembly, make sure it's all good other than bearing. When it failed it can take other parts. So, check it first.

Why it failed is another question, I bet it's from lack of lube. When I R/R my starter there was almost no lube, just black caked stuff.

 

[Gr3G]

If the replacement comes with a sealed bearing it makes me wonder if the failed one had a seal once upon a time. With no seal or solid lubrication in the bearing it's very likely lack of lubrication is what killed the bearing.

 

[katit]

If the replacement comes with a sealed bearing it makes me wonder if the failed one had a seal once upon a time. With no seal or solid lubrication in the bearing it's very likely lack of lubrication is what killed the bearing.

Original has seal on outside for sure, you can see in page #2 in my post lined in sig.

 

[Brandon Ryder]

i don't think the rest of the of the starter is damaged. i was working on it as a maintenance thing. i thought the contacts were going. i almost put it back in but noticed the bearing. i pulled it apart and there is a smaller similar bearing on the inside party of the clutch. also no seal or shield. ill have to clean it up and lube that one.

what does rkh stand for?

 

[kruisinkid]

might be worth a look to open the flywheel inspection window and see if a seal or other parts come out

 

[Eyedaho]

Based on that handy reference chart, RK has a double lip seal on one side. That jives with what I saw with my starter, that it had seals on one side only on a couple of the bearings. That one for sure had a seal on the outside and not on the inside. I was assuming that was so the grease from the clutch assembly could work refresh what was in the bearings, since it's a high load and high heat application. Whatever Denso's reasoning, I'm guessing that when you pull that clutch assembly apart, you'll find a seal on the other side. If so, that starter had the bearing installed backwards, which caused it to get contaminated and lose its lubrication into the flywheel enclosure, leading to its failure. Just a hunch.

 

[Brandon Ryder]

might be worth a look to open the flywheel inspection window and see if a seal or other parts come out

that's interesting. I've had a mysterious irregular rattle that sounds a bit like a penny in a dryer. where is this inspection window?

 

[Brandon Ryder]

Based on that handy reference chart, RK has a double lip seal on one side. That jives with what I saw with my starter, that it had seals on one side only on a couple of the bearings. That one for sure had a seal on the outside and not on the inside. I was assuming that was so the grease from the clutch assembly could work refresh what was in the bearings, since it's a high load and high heat application. Whatever Denso's reasoning, I'm guessing that when you pull that clutch assembly apart, you'll find a seal on the other side. If so, that starter had the bearing installed backwards, which caused it to get contaminated and lose its lubrication into the flywheel enclosure, leading to its failure. Just a hunch.

negative. i already pulled clutch out and can see the other side. no seal on that side either. the inner most bearing on the clutch doesn't have one either but I'm not surprised by that.

 

[Eyedaho]

Oh yeah, then it must have ended up in the bell housing with the flywheel. Maybe when that retainer came apart, it popped the seal out.