2.
Check the delivery valve and holder.
(1) Check the valve seat surface and piston for
scratches, dents and wear.
(2) Check the delivery valve and holder for scratches on
the contact surfaces with the injection pipe.
(3) Check the suck-back action.
(a)
Thoroughly wash the parts in light oil and do
not wipe off the oil film. Close the lower part of
the valve seat with a finger and lift the valve.
(b)
The parts are in good condition if the valve
stops at the relief valve when released.
(c)
Replace the valve if it falls to the seat.
3. Check the roller ring.
(1) If flaking, local wear or other flaws that prevent reuse
are found on the roller and roller pin, replace the roller
ring assembly.
(2) Measure the height of four rollers using a dial gauge
and calculate the dispersion.
Limit: 0.02 mm (0.0008 in.)
If the limit is exceeded, change the roller positions
with one another and check the height dispersion
again.
4.
Check the drive shaft.
(1) Play exists between the key and the key groove.
Replace the drive shaft if the taper is damaged.
(2) Measure the amount of wear in the oil seal contact
surface.
Limit: 0.08 mm (0.0031 in.)
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