CONTROL VALVES
SUBSECTION 5C
`SERVICE KIT ITEMS
Figure 5C-4. Control Valve (36Z1077)
scoring. If scoring is not deep enough to cause objection-
INSPECTlON AND REPAIR. Discard all oil seals, O-rings and
able leakage, the surfaces can be stoned or polished with
back-up rings. Wash the remaining parts in a clean mineral
crocus cloth. If scoring is excessive the entire valve must be
oil solvent and place them on a clean surface for inspec-
replaced Check the valve spool for freedom of movement.
tion.
NOTE
ASSEMBLY. To assemble the valve, proceed as follows (see
A service kit is available. See the Replacement Parts
Manual.
1. Coat all parts with clean hydraulic oil to facilitate as-
sembly and to provide initial lubrication. Petroleum jelly can
Carefully remove burrs by light stoning or lapping. Be cer-
be used to hold seal rings and O-rings in place on assem-
tain there is no paint or burring on mating surfaces of valve
bly.
bodies. Inspect the valve spools and bores for burrs and
5C-4