7. Make certain that all surfaces of the valve, the
adaptor plate and the pump housing are clean
6. Remove the orifice plugs from the spool. Ex-
and free of dirt. Use a fine stone to remove any
amine the spool carefully for nicks, burrs dirt or
burrs, as shown in the picture. Assemble the
rust. Carefully examine the bore and the valve.
valve in a sequence opposite todisassembly. Re-
If the spool shows signs of wear or damage it
fer to page 201 for adjusting procedures and
may be replaced only if the bore in the valve are
troubleshooting guide.
in good condition.
Assembly of the Valve
Thoroughly clean all parts for reassembly, use
new O-rings and coat them with light grease. Tor-
que the capscrews as follows:
SIZE
40-45 lbs/ft.
3/8 - 16NC
65-80 lbs/ft.
7/16 - 14 NC
1/2 - 13 NC
85-100 lbs/ft.
When installing the adjusting screw, turn it into
the casting only about three revolutions.
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