Toro 07390 Workman HDX-Auto, Service Manual, Page: 244 / 280

Workman HDX Auto Page 7 − 60 Hydraulic System
CAUTION
Use eye protection such as goggles when using
compressed air.
6. Clean cartridge valve using clean mineral spirits.
Submerge valve in clean mineral spirits to flush out con-
tamination. Particles as fine as talcum powder can affect
the operation of high pressure hydraulic valves. If car-
tridge design allows, use a wood or plastic probe to push
the internal spool in and out 20 to 30 times to flush out
contamination. Be extremely careful to not damage car-
tridge. Use compressed air for cleaning.
7. Reinstall the cartridge valve into the manifold:
A. Lubricate new seal kit components with clean hy-
draulic oil and install on valve. The O−rings, sealing
rings and backup rings must be arranged properly on
the cartridge valve for proper operation and sealing.
IMPORTANT: Use care when handling the car-
tridge valve. Slight bending or distortion of the
stem tube can cause binding and malfunction.
B. Thread cartridge valve carefully into manifold
port. The valve should go in easily without binding.
C. Using a deep socket, torque cartridge valve 25 ft−
lb (34 N−m).
D. Slide solenoid coil onto the cartridge valve. Install
nut and torque 5 ft−lb (6.8 N−m). Over−tightening
may damage the solenoid or cause the valve to mal-
function.
8. If hydraulic problems still exist with vehicle, remove
cartridge valve and clean again or replace valve.
Installation (Fig. 46)
1. If tee fittings were removed from manifold, lubricate
and place new O−rings onto fittings. Install fittings into
manifold openings using marks made during the remov-
al process to properly orientate fittings. Tighten fittings
(see Hydraulic Fitting Installation in the General Infor-
mation section of this chapter).
2. Install manifold to vehicle using Figure 46 as a guide.
3. Replace O−rings on hydraulic hoses and fittings. Re-
move caps and plugs from hydraulic lines and fittings.
Connect hydraulic lines to manifold (see Hydraulic Hose
and Tube Installation in the General Information section
of this chapter).
4. Check oil level in hydraulic reservoir. Add correct oil
if necessary.
5. Remove bed support from cargo bed lift cylinder and
lower bed.