GT550 crank seals

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karl pa
To the on ramp
Posts: 490
Joined: Sat Sep 05, 2015 3:14 pm
Country: us
Suzuki 2-Strokes: GT
Location: southeast pa

GT550 crank seals

Post by karl pa »

My GT550 was burning gearbox oil, so I pulled the top end and filled crankcase with diesel and Blue Devil, soaking 3 days and looking good, checked this morning and right and center cylinder empty. Now the diesel drains out the transmission drain as I fill the crankcase, not sure why it held good for 3 days now won't hold. Looks like I will be splitting cases, got lucky on a couple but not this time.
76 GT185
77 GT250
77 GT380
76 GT500
73 GT550
73 GT750
74 GT750
71 T250 scrambler
75 T500 cafe
sportston
Expert racer
Posts: 1119
Joined: Wed Jul 10, 2013 12:04 pm
Country: England, UK
Suzuki 2-Strokes: FZ50, GP100, RG125 Gamma, GT380, Bandit 1200S

Re: GT550 crank seals

Post by sportston »

Bummer. Thanks an expensive rebuild for just a set of seals. Had to do them on my GT380, spent more on getting the crankshaft rebuilt than anything else on the entire bike with the exception of a set of Higgspeeds. At least you can have peace of mind from doing the job well.
karl pa
To the on ramp
Posts: 490
Joined: Sat Sep 05, 2015 3:14 pm
Country: us
Suzuki 2-Strokes: GT
Location: southeast pa

Re: GT550 crank seals

Post by karl pa »

Got my crank back repaired, I placed transmission in lower case, but when I place the kick start shaft in lower case the shaft is end heavy and lifts the shaft bushing off the locator pin, is there a trick to keeping the bushing on locator pin?
76 GT185
77 GT250
77 GT380
76 GT500
73 GT550
73 GT750
74 GT750
71 T250 scrambler
75 T500 cafe
sportston
Expert racer
Posts: 1119
Joined: Wed Jul 10, 2013 12:04 pm
Country: England, UK
Suzuki 2-Strokes: FZ50, GP100, RG125 Gamma, GT380, Bandit 1200S

Re: GT550 crank seals

Post by sportston »

I know on the gt380 you can install the shaft untensioned. This helps prevent the bush lifting. If the GT550 is the same you, add the tension after bolting the two halves together.
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