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Inspecting The Crankshaft Alignment - Derbi GP1 125-250 c.c. Workshop Manual

Gp1 125-250 c.c..
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Characteristic
Driving shaft - case axial clearance:
Standard clearance 0,15 ÷ 0,40 mm
Driving shaft - connecting rod axial clearance:
Standard clearance 0,20 ÷ 0,50 mm
Driving shaft - connecting rod radial clear-ance:
Standard clearance 0,036 ÷ 0,054 mm
Driving shaft width with complete washers standard measurements
55,67 ÷ 55,85 mm
Driving shaft capacities:
Standard diameter: cat1 - 28,994 ÷ 29,000
Driving shaft capacities:
Standard diameter: cat 2 - 29,000 ÷ 29,006
I
I
NSPECTING THE CRANKSHAFT ALIGNMENT
NSPECTING THE CRANKSHAFT ALIGNMENT
To install the drive shaft on the support and to measure the
misalignment in the 4 points indicate to you in figure.
- Check that the driving shaft cone, the tab seat, the oil guard
connection and the threaded tangs are in good working or-
der.
- In case of failures, replace the driving shaft. The connecting
rod head brasses cannot be replaced.
For the same reason, when cleaning the driving shaft, be
careful to prevent any impurity from entering into the shaft
lubrication hole.
In order to prevent damaging the connecting rod brasses, do
not attempt cleaning the lubrication duct with compressed
air.
- Make sure that the 2 pads on the crank button are properly
mounted.
- A wrong installation of a pad can seriously affect the brass
lubrication pressure.
133

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This manual is also suitable for:

Gp1 125 c.c.Gp1 250 c.c.

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