Monster 620 primary shaft endfloat

21-03-2019, 08:33 PM

Hi rebuilding a monster that I had bought. She hadn't been well cared for at all and I am trying to get her back to full health. I was doing the clutch and found a nice bit of endfloat in the primary gearbox shaft as I can even get a small amount of up down movement on the shaft.
Question is is this normal or is it time to split the engine and pull the box apart.

350TSS · 21-03-2019, 09:37 PM

no and yes

21-03-2019, 09:45 PM

Thanks as measured it and looks like around 0.15mm of endfloat. The clutch basket complete seems to have a bit of lateral play too.

Darren69 · 21-03-2019, 10:32 PM

Whats the mileage? Could be the clutch is due for a replacement anyway, maybe around >20k ish depends on how it has been abused by DPO

slob · 22-03-2019, 10:31 AM

The manual for MY02 620/750ie says 0.05mm - 0.15mm for the gearshafts
and 0.1mm - 0.4mm for the selector drum

08-07-2019, 10:24 AM

Well just an update I ended up splitting the casing as there turned out to be a worn bearing that was throwing the measurements out.

21-03-2019, 08:33 PM	#1
CJ haughey Guest Posts: n/a	Monster 620 primary shaft endfloat Hi rebuilding a monster that I had bought. She hadn't been well cared for at all and I am trying to get her back to full health. I was doing the clutch and found a nice bit of endfloat in the primary gearbox shaft as I can even get a small amount of up down movement on the shaft. Question is is this normal or is it time to split the engine and pull the box apart.

21-03-2019, 10:32 PM	#4
Darren69 Transmaniacon MOC Join Date: Sep 2013 Location: Sutton In Ashfield Bike: Multiple Monsters Posts: 6,022	Whats the mileage? Could be the clutch is due for a replacement anyway, maybe around >20k ish depends on how it has been abused by DPO __________________ Roast Beef Monster! Termignoni and Bucci - Italian for pipe and slippers! S4 Fogarty, S4R 07T, 748, Series 1 Mirage

22-03-2019, 10:31 AM	#5
slob . Join Date: Jul 2003 Location: East London Bike: Multiple Monsters Posts: 9,707	The manual for MY02 620/750ie says 0.05mm - 0.15mm for the gearshafts and 0.1mm - 0.4mm for the selector drum Last edited by slob; 22-03-2019 at 10:35 AM..

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21-03-2019, 09:37 PM	#2
350TSS Too much time on my hands member Join Date: Jan 2013 Location: Shipbourne Bike: M900 Posts: 1,419	no and yes

21-03-2019, 09:45 PM	#3
CJ haughey Guest Posts: n/a	Thanks as measured it and looks like around 0.15mm of endfloat. The clutch basket complete seems to have a bit of lateral play too.

08-07-2019, 10:24 AM	#6
CJ haughey Guest Posts: n/a	Well just an update I ended up splitting the casing as there turned out to be a worn bearing that was throwing the measurements out.