Changing Sprockets

[RichieS]

The rear one, was obviously, pretty simple to do.
The front is proving a tad more problamatical. Put bike into first gear, but all i manage to do, is turn the sprocket . Is there a way of 'locking' the sprocket, as the nut seems pretty tight.

Any useful suggestion gratefully recieved

Richie

 

[Timolgra]

Use a block of wood between the sprocket and a tough part of the casing.

 

[Timpo]

Use a block of wood between the sprocket and a tough part of the casing.

Be carefull, this is not a good idea. The clutch actuator shaft casing can be damaged easily.....

When changing the sprockets, always undo the front sprocket countershaft nut firs by bending away the tab washer edge from the nut flat. Stand on the rhs of the bike, with one foot on the rear brake. Lean over the bike and use a socket and ratchet (1/2") on the countershaft nut. Pull the ratchet up towards you so encouraging you to press harder on the rear brake pedal.
When loose, then change the rear sprocket to completion. Then put the new front sprocket on and turn the nut onto the countershaft threaded end. Mount the chain and put a little turn to reduce slack in chain, but not tightening it.
Again, stand on the rear brake and tighten the front sprocket nut.
Ensure you only tighten the countershaft nut to the correct torque. Any more will crush the bush behind the sprocket, leading to premature countershaft oil seal failure.
When both front and rear sprocket fixtures are tightened to correct torque, the finishing touch is to tighten chain.

T.

 

[D6]

get yourself on to thumpertalk, theres a large section for the DRZ

 

[RichieS]

Thanks Guys...

Fatal flaw in my plan was to do the rear first as needed to do rear brake as well and took the wheel off!! .

Once i get the rear on, i'll try again using the tips here.

 

[the beer hunter]

I changed my front sprocket recently & it was v.difficult...

..until I found out how to do it.

I had a huge strongbar & had the front wheel up against a wall & still it wouldn't budge, I ended up drilling the nut off.
I'm 15st, I was sitting on the bike with the front pushed against a wall & my foot planted on the brake. My brother was pulling up on a 4ft tube until he was lifting me & the bike up enough for the back wheel to spin.
Bloody nightmare!

I later found out that Loctite has a narrow temperature range in which it works well. I strongly suspect the last owner of my DRZ used loctite.
Simply heat up the nut & it will destroy Loctite's properties (& expand enough to aid removal).

 

[Timolgra]

Be carefull, this is not a good idea. The clutch actuator shaft casing can be damaged easily.....

When changing the sprockets, always undo the front sprocket countershaft nut firs by bending away the tab washer edge from the nut flat. Stand on the rhs of the bike, with one foot on the rear brake. Lean over the bike and use a socket and ratchet (1/2") on the countershaft nut. Pull the ratchet up towards you so encouraging you to press harder on the rear brake pedal.
When loose, then change the rear sprocket to completion. Then put the new front sprocket on and turn the nut onto the countershaft threaded end. Mount the chain and put a little turn to reduce slack in chain, but not tightening it.
Again, stand on the rear brake and tighten the front sprocket nut.
Ensure you only tighten the countershaft nut to the correct torque. Any more will crush the bush behind the sprocket, leading to premature countershaft oil seal failure.
When both front and rear sprocket fixtures are tightened to correct torque, the finishing touch is to tighten chain.

T.

Quite right I mentioned the other dodgy way because he'd already removed the rear one

 

[Nice 'n' Fat]

In 1st gear with a fatbloke sat on it with both brakes applied ..... works everytime

 

[the beer hunter]

In 1st gear with a fatbloke sat on it with both brakes applied ..... works everytime

Not every time!

 

[RW1102]

Slide a peice of wood through the rear sprocket and over the swing arm,

 

[Nice 'n' Fat]

Not every time!

Everytime I've done it, it works ..... you must be doing something wrong

 

[timeandtide]

In 1st gear with a fatbloke sat on it with both brakes applied ..... works everytime

Where are you going to find a fat bloke on the GS-er site?

PS while sprocket's off change the spacer behind foe a stainless one if you haven't already done so.

 

[RichieS]

Front Sprocket

Well ii tried everything........and they didnt work, so it was off to the local tyre shop who has an impressive big air wrench. First one was not man enough for the job, so he brought out the BIG one! That did it.
So, at last, all ready to go and get the MOT. Hopefully pass now and off to play in the mud......and fall off alot