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Oil pump won't rotate

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Husker45
honda305.com Member
Posts: 58
Joined: Sun Nov 06, 2011 10:10 am
Location: Pittsburgh, PA

Oil pump won't rotate

Post by Husker45 » Fri Jul 13, 2012 7:02 pm

I rebuilt the oil pump with a new A gear and parts from two salvaged pumps. After reassembly it won't rotate. It seems like when the two halfs are screwed together its clamping down on either the A gear, B gear, or both. Has anyone else had issues with this? Any help truly appreciated. Thanks.

Husker

LOUD MOUSE
honda305.com Member
Posts: 7817
Joined: Mon Aug 15, 2005 8:23 am
Location: KERRVILLE, TEXAS

Re: Oil pump won't rotate

Post by LOUD MOUSE » Fri Jul 13, 2012 7:51 pm

Take it apart and rotate the sprocket.
If it turns freely you may look at the gears and see if the gear with the pin is down/level with the base. ...................lm
Husker45 wrote:I rebuilt the oil pump with a new A gear and parts from two salvaged pumps. After reassembly it won't rotate. It seems like when the two halfs are screwed together its clamping down on either the A gear, B gear, or both. Has anyone else had issues with this? Any help truly appreciated. Thanks.

Husker

Husker45
honda305.com Member
Posts: 58
Joined: Sun Nov 06, 2011 10:10 am
Location: Pittsburgh, PA

Post by Husker45 » Fri Jul 13, 2012 9:57 pm

LM, rotates freely until I tighten the screws. Gear with pin looks level and flush. This one is baffling me.

LOUD MOUSE
honda305.com Member
Posts: 7817
Joined: Mon Aug 15, 2005 8:23 am
Location: KERRVILLE, TEXAS

Post by LOUD MOUSE » Sat Jul 14, 2012 2:53 am

Any chance the paper gasket is the problem?. ............lm
Husker45 wrote:LM, rotates freely until I tighten the screws. Gear with pin looks level and flush. This one is baffling me.

Husker45
honda305.com Member
Posts: 58
Joined: Sun Nov 06, 2011 10:10 am
Location: Pittsburgh, PA

Post by Husker45 » Sun Jul 15, 2012 3:09 pm

LM good call on the gasket. Slight overlap with gears was causing binding. A little trimming fixed it up.

New question. On my old strainer the area with the screens was shorter allowing the use of the oil receiver (1962 cb77). I had to get a new strainer which is taller and does not allow the oil receiver to fit. Is it ok to use the new strainer and eliminate the use of the receiver? What pupose did the receiver really achieve? Thanks for all of your advice.

Husker

LOUD MOUSE
honda305.com Member
Posts: 7817
Joined: Mon Aug 15, 2005 8:23 am
Location: KERRVILLE, TEXAS

Post by LOUD MOUSE » Sun Jul 15, 2012 6:22 pm

That plastic sort of part was discontinued and the new screen was issued for most of the engines.
I'd say the HONDA engineers felt the new design was better.
I won't give a guess as it would be just a guess. ......lm
Husker45 wrote:LM good call on the gasket. Slight overlap with gears was causing binding. A little trimming fixed it up.

New question. On my old strainer the area with the screens was shorter allowing the use of the oil receiver (1962 cb77). I had to get a new strainer which is taller and does not allow the oil receiver to fit. Is it ok to use the new strainer and eliminate the use of the receiver? What pupose did the receiver really achieve? Thanks for all of your advice.

Husker

Husker45
honda305.com Member
Posts: 58
Joined: Sun Nov 06, 2011 10:10 am
Location: Pittsburgh, PA

Post by Husker45 » Sun Jul 15, 2012 6:50 pm

Thanks LM. Talk to you soon again most likely.

Husker

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