Westerbeke 6.5KW - Page 70

3. Check the clearance between
the outer rotor and pump body
with a feeler gauge. If the
clear ance exceeds the limit,
replace the rotor or pump
body.
Clear ance limit:
0.35 rnrn (0.014 in)
4. Check the end float of the
rotors. Place a straight
edge across the pump body and
measure the clearance between
the rotor and straight edge
wi th a feeler gauge. I f the
clear ance exceeds the limit,
replace the drive gear, drive
shaft, inner rotor, outer
rotor and pump body.
Clearance limit:
0.15 rnrn (0.0059 in)
5. Then, place a straight edge across the pump cover and measure the
clearance between the straight edge and cover. If the cover
exceeds the limit, correct the pump cover by grinding or replace
it.
6.
Clearance limit: 0.15 rnrn (0.0059 in)
Check the relief valve for worn
plunger and fatigued spring.
Spring free length:
45.5 rnrn (1.791 in)
7. Clean the pick up strainer.
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