SOHC.co.uk Forums > CB350/400
400 four main bearings - will need replacement STD bearings.
Bryanj:
Yup, even with the little ratchet that is supposed to limit the movement
McCabe-Thiele (Ted):
--- Quote from: Oddjob on March 21, 2021, 11:40:40 AM ---TED CMS still sell most of the main bearings, I was wrong as well, there appears to be a Red bearing as well, no blues or blacks but do have Brown, Green and Red. Brown and Green are the most common colours. Click on a bearing and you can see the colours on the edge of the bearing so you know where to look.
https://www.cmsnl.com/honda-cb400f-england_model14639/partslist/E01.html#.YFcwHVX7SUn
No 42 for mains, No 40 for conrods.
--- End quote ---
Thanks that's good to know - I've looked at the main bearings in the lower crankcase - I can't see any colour markings having checked all 5. With a bit of luck I might have more joy when I check the upper halves/
McCabe-Thiele (Ted):
I have re-examined the lower main shells - I have found what might be a colour on one of the shell edges to me it looks like a shade of green?
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Main bearing shell by Macabe Thiele, on Flickr
Nurse Julie:
Indeed that is green one Ted.
McCabe-Thiele (Ted):
--- Quote from: Oddjob on March 21, 2021, 03:31:37 PM ---Whatever you do Ted don't mix the shells or forget where they came from.
As Julie says that definitely a green, so that journal requires a green pair of shells. You could use the back of the shell markings and see if the one you've identified is the same as the rest. They tended to use the same marks for the same colour for the same production run, so if any other shells match that marking it's reasonable to assume that's a green shell as well. The conrod shells use the same method so check the side of those for colours as well.
--- End quote ---
Good point so far they are all still in the right position but I will record them when I take the crank out - looking at the meaningless codes on the 5 shells they are D6H-A,D6I-A,D6T-A,D6I-A & D6H-A that means they mix the colours on an individual crank bearing. The Green one is D6I-A there are two with this colour journal 2 & 4.
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