Author Topic: oil seals  (Read 249 times)

Offline rosco

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oil seals
« on: July 10, 2019, 03:55:03 PM »
Engine rebuild coming on fine, after Head rebuild and rebore by Trigger.  Just one problem I didn't fit the right hand crank seal before bolting the cases back together. I now not sure which way it fits. Logic says looking at it , the metal side out. Is this correct ?
Thanks Ross

Offline royhall

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Re: oil seals
« Reply #1 on: July 10, 2019, 05:36:18 PM »
You will be lucky to get it in as there is a rib around the seal that locates in a slot in the crankcases.
Current bikes:
TriBsa CCM 350 Twin
CB350F in Candy Bacchus Olive
CB750F2 in Candy Apple Red
CB1300SA in Black
Triumph T100C
Suzuki GS1000HC (Bastard tried to burn me to death last night)
CB450K0 Black Bomber (current project)

Offline Nurse Julie

  • 1973 CB750 UK K2.1977 CB550/4 Mongrel Brat. 1978 CB400/4.
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Re: oil seals
« Reply #2 on: July 10, 2019, 05:45:34 PM »
Back to night school Ross. Metal side facing in...it should have a lip on it which needs to locate so cases need to be apart to fit it  :'( :'(
Im a Nurse, trust me, this won't hurt.....much !!!

LINK TO MY CB400/4 ENGINE STRIP / ASSESSMENT AND REBUILD...NOW COMPLETE
http://www.sohc.co.uk/index.php/topic,14049.msg112691/topicseen.html#new

Offline royhall

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Re: oil seals
« Reply #3 on: July 10, 2019, 05:56:03 PM »
That said I have managed to change a seal before without splitting the engine. At least you don't have to get an old one out. What I did was coat the outside of the seal with grease and oil the inner then knock it in with a suitable size socket ( just smaller than the seals outer). Mine just popped in and has been fine since. Be very careful you don't accidently scratch the crank or your seal will be toast in no time. Good luck.
Current bikes:
TriBsa CCM 350 Twin
CB350F in Candy Bacchus Olive
CB750F2 in Candy Apple Red
CB1300SA in Black
Triumph T100C
Suzuki GS1000HC (Bastard tried to burn me to death last night)
CB450K0 Black Bomber (current project)

Offline rosco

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Re: oil seals
« Reply #4 on: July 10, 2019, 07:03:33 PM »
Bummer!!    Thanks guys   Back to schooooool !!!!!!!!!  As I'm waiting for some parts from D S America to arrive Think its safer to split cases and do the job properly  Ross

Offline Nurse Julie

  • 1973 CB750 UK K2.1977 CB550/4 Mongrel Brat. 1978 CB400/4.
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Re: oil seals
« Reply #5 on: July 10, 2019, 07:05:22 PM »
Yes Ross, best to do it properly, a bummer I know but do it right, do it once 👍👍👍
Im a Nurse, trust me, this won't hurt.....much !!!

LINK TO MY CB400/4 ENGINE STRIP / ASSESSMENT AND REBUILD...NOW COMPLETE
http://www.sohc.co.uk/index.php/topic,14049.msg112691/topicseen.html#new

Offline royhall

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Re: oil seals
« Reply #6 on: July 10, 2019, 07:08:50 PM »
Agreed, splitting the cases is the best way to go.
Current bikes:
TriBsa CCM 350 Twin
CB350F in Candy Bacchus Olive
CB750F2 in Candy Apple Red
CB1300SA in Black
Triumph T100C
Suzuki GS1000HC (Bastard tried to burn me to death last night)
CB450K0 Black Bomber (current project)

Offline rosco

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Re: oil seals
« Reply #7 on: July 10, 2019, 08:08:49 PM »
Luckily I've got time on my side and not in a rush  Just that the manuals are very vague and not fully informative  Not like the forum   Your right Julie  do it once and do it right  Better to find mistakes at this stage   Least i can leave the Barrels and Head on Ross

Offline rosco

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Re: oil seals
« Reply #8 on: July 11, 2019, 03:44:53 PM »
 Engine split, Seal fitted, and all back together.  Thanks for your advice   Julie  and Roy  It had to be done properly. Didn't dare risk it, then have to pull the motor out thanks again  Ross

Offline royhall

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Re: oil seals
« Reply #9 on: July 11, 2019, 03:52:02 PM »
Nice one, good decision. Bet it didn't take long once you got stuck in.
Current bikes:
TriBsa CCM 350 Twin
CB350F in Candy Bacchus Olive
CB750F2 in Candy Apple Red
CB1300SA in Black
Triumph T100C
Suzuki GS1000HC (Bastard tried to burn me to death last night)
CB450K0 Black Bomber (current project)

Offline rosco

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Re: oil seals
« Reply #10 on: July 11, 2019, 03:57:46 PM »
It was really quick. Luckly all still fresh in my mind around a couple hours give or take Hardest part was lifting the engine and turning it over and round  A bit of a lump ??  Ross