Toro 05137SL Rev A Service Manual Pro Sweep 5200 Service Manual

Hydraulic Manifold Service
Make sure the  control manifold is  clean before re-
CAUTION
1.
moving any cartridge valve.
Abrupt movement of  internal spools can cause
stored fluid to be released suddenly.
2.
securing solenoid to the cartridge valve. Carefully slide
solenoid off the valve.
If solenoid cartridge  is being serviced,  remove nut
6.
Clean cartridge valve by submerging valve in clean
mineral spirits to  flush out contamination. Particles  as
fine as talcum powder can  affect the operation of high
pressure hydraulic  valves.  If cartridge  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 ex-
tremely  careful  not  to  damage  cartridge. Use  com-
pressed air for cleaning.
CAUTION
Operate all sweeper hydraulic controls to relieve
system pressure and to avoid  injury from pres-
surized  hydraulic oil.  See  Relieving  Hydraulic
System Pressure in the General Information sec-
tion of this chapter.
7.
Reinstall the cartridge valve into control 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 cartridge
valve. Slight bending or distortion of the stem tube
can cause binding and malfunction.
3.
Note  correct  location  for o–rings,  sealing  rings  and
backup rings. Remove and discard seal kit from valve.
Remove cartridge valve with a deep socket wrench.
IMPORTANT: Use care when  handling the valve
cartridge.  Slight  bending  or  distortion  of  the
stem tube can cause binding and malfunction.
4.
sealing surfaces, damaged threads and contamination.
Visually inspect the manifold port for damage to the
B.  Thread cartridge valve carefully into correct man-
ifold port. The valve should go in easily without bind-
ing.
5.
Visually inspect cartridge valve for damaged sealing
surfaces and contamination.
C. Torque cartridge valve using a deep socket to val-
ues identified in Figure 14.
A.  Contamination may cause valves to stick or hang
up. Contamination can become lodged in small valve
orifices or seal areas causing malfunction.
8.
If solenoid  cartridge was removed, carefully  install
solenoid coil  onto the  cartridge valve.  Install nut  and
torque nut to 36 in–lb (4.1 N–m).
B.  If valve sealing  surfaces appear pitted  or dam-
aged, the hydraulic  system may be overheating  or
there may be water in the system.
9.
After assembly, if problems still exist, remove valve
and clean again or replace valve.
CAUTION
Use eye protection such as goggles when using
compressed air for cartridge valve cleaning.
Pro Sweep 5200
Page 3 – 21
Hydraulic System
Product Specification
CategoriesLawn Mower Manual, Toro Lawn Mower Manual
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- 77 pages
Document TypeService Manual
LanguageEnglish
Product BrandToro. Customer Service Representatives are available by phone: Monday - Friday 7:30 a.m. to 9:00 p.m. (CDT) - Saturday 8:00 a.m. to 8:00 p.m. (CDT) - Sunday 10:00 a.m. to 8:00 p.m. (CDT)
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