Installing the SDLA Spool Valve (continued)
2. Install the SDLA linkage mounting bolts Figure 31, item 1.
3. Remove the caps and plugs that were installed on the hydraulic hoses. Lubricate
and install new O-rings, connect the hydraulic hoses to the fittings on the spool
valve. Tighten the hose connections; refer to Installing the Hydraulic Hoses and
Tubes (O-Ring Face Seal), page 5–10.
4. Install the seat and seat mount.
5. Add hydraulic fluid to the system.
6. Check the hydraulic system for leaks and add hydraulic fluid to the system as
required.
7. Install the lower frame cover.
Replacing the SDLA Spool Valve Float Detent
CAUTION
Before opening the hydraulic system, operate all the hydraulic controls to
release system pressure and avoid injury from the pressurized hydraulic fluid;
refer to Relieving Pressure from the Hydraulic System, page 5–2.
Figure 32
G448548
Spool Valve
Spool
O-ring
Mounting bolts
1. Remove any attachments from the machine, park the machine on a level surface,
engage the parking brake, remove the key from the ignition, and switch the main
circuit breaker to the O
FF position.
2. Remove the lower frame cover; refer to Removing and Installing the Lower
Frame Cover, page 7–18.
3. Remove the SDLA spool valve
as required; refer to Removing the SDLA Spool
Valve, page 5–27.
4. Remove the two mounting bolts
, pull the spool from the valve, and discard
the o-ring
.
Hydraulic System: Service and Repairs Page 5–28 4520Z
09.40001Rev 00
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