Beta Enduro RR 350 2015 Workshop Manual page 85

Low pressure pump: note the dot on the two rotors.
The dot must face the inside of the engine.
Assessment of radial play between
and internal and external rotor.
Exploded view of high-pressure pump cover. 4) Circlip
JS24; 5) Oil seal 10x22.6; 6) Oil pump cover; 20)
O-ring 45x2.
Checking oil pump control shaft.
Assessment of radial play
between external rotor and
crankcase.
A
Should the sliding surfaces with the rotors present
deep or evident traces of corrosion, replace the de-
teriorated part (in this case, the crankcase).
To measure the radial play between the internal
and external rotor and between the external rotor
and the crankcase, proceed as follows:
Insert the two rotors in their specific seat with the
reference dot facing the inside of the engine.
Using a thickness gauge, check that the play does
not exceed that allowed, equal to:
Maximum radial play: 0,20mm
Take a thickness gauge again and a rectified refe-
rence surface and verify that the axial play does not
exceed the maximum allowed amount:
Maximum axial play: 0,1mm
Should play be greater, replace the rotors.
Assessment of radial play between rotors
sliding surfaces.
As to the high-pressure pump (located in the
outside right crankcase half), one must check
that the oil seal 5 is not worn (it is recom-
mended to replace it). In order to disassembly
it, the circlip 4 must be removed. Check the
state of use of the O-ring 20 and replace it if
needed.
Also check that the drive shaft is not too mar-
ked in the zone A where the oil seal slides.
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