GT380 / GT550 / GT750 oil pump
Posted: Sat Jan 07, 2017 6:05 pm
Another question for the GT380 with the oil leak.
Am using a pump that I got from eBay.
I took the pump apart & it didn’t have a top cover gasket, so the PO had the pump apart.
I checked & both little plungers were operating smoothly. And I assembled the pump with a new gasket.
Since then it occurred to me that I hadn’t checked if the PO had correctly assembled the pump.
Looked at the field guide: http://www.oldjapanesebikes.com/GT750_f ... e/page-A57
The pistons are inserted in the valve body with the springs in first, so thats ok.
The two springs look to be the same length, so thats ok.
Both pistons operate easily & can be pushed in all the way.
Of the two piston-sized holes in the valve body, which piston goes in which hole? (Is it sufficient test if they go in all the way?)
Does the piston orientation matter? (Which end goes in first?)
Am using a pump that I got from eBay.
I took the pump apart & it didn’t have a top cover gasket, so the PO had the pump apart.
I checked & both little plungers were operating smoothly. And I assembled the pump with a new gasket.
Since then it occurred to me that I hadn’t checked if the PO had correctly assembled the pump.
Looked at the field guide: http://www.oldjapanesebikes.com/GT750_f ... e/page-A57
The pistons are inserted in the valve body with the springs in first, so thats ok.
The two springs look to be the same length, so thats ok.
Both pistons operate easily & can be pushed in all the way.
Of the two piston-sized holes in the valve body, which piston goes in which hole? (Is it sufficient test if they go in all the way?)
Does the piston orientation matter? (Which end goes in first?)