ASV SC50 Scout, Service & Repair Manual

Page: 89 / 111

Auxiliary Control Valve
Disassembly
1. With machine off and cool and with hydraulic actu-
ators relaxed, remove the auxiliary control valve
according to the procedure on page 10-8.
2. Place the valve on a bench in a clean work area.
3. Remove the nuts holding the valve stack together,
then remove the end cap. (figure 13-13, 13-14)
4. Remove each valve section and inspect the seals
for damage, replace if necessary. (figure 13-15)
Note: Be careful not to lose the spring or poppet that
sit inside each valve section, these will be reused.
5. Remove each inlet port assembly and inspect the
seal, spring, and poppet for damage, replace if
necessary. (figure 13-16, 13-17)
6. Once the inlet port covers have been removed,
remove the spool and inspect it. If damaged,
replace the auxiliary control valve. (fig. 13-18)
Note: The spool must be oriented correctly in order for
the valve to function. There is a small dimple in the
end of each spool. Note the direction it is facing in
relation to the valve section upon removal and reinstall
it this same way. The valve will not function properly if
this spool is installed incorrectly. (fig. 13-18)
Assembly
1. Install new seals and components in place of the
originals as necessary paying close attention to
location and orientation to ensure proper function.
2. Thoroughly clean all components to prevent sys-
tem contamination.
3. Reassemble components by reversing the disas-
sembly process.
13-4
Rubber Track Utility Vehicle
13. Hydraulic Component Service
Required Tools
Socket Wrench
Combination Wrench
Screwdriver (blade type)
Low Profile Needle Nose Pliers
13-13
13-15
O-ring
13-16
13-17
13-14
13-18
spring
poppet
o-ring
spool
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