Service Manual

22
O-ring Kit
O-ring face seal connections on Toro equipment
require the use of special 90 Durometer O-rings.
Toro recommends that the O-rings need to be re-
placed whenever a connection is loosened. An O-
ring kit is available containing quantities of O-rings
for both face seal and port seal connections used in
Toro equipment.
O-ring Kit: P/N 16-3799
Figure 9
Removing Hydraulic System Components
1. Thoroughly clean the machine before discon-
necting, removing or disassembling any hydraulic
components. Always keep in mind the need for
cleanliness when working on hydraulic equipment.
2. Put caps or plugs on any hydraulic lines or fitting
left open or exposed.
3. Put labels on disconnected hydraulic lines and
hoses for proper installation after repairs are com-
pleted.
After Repair or Replacement of Components
1. Check oil level in hydraulic reservoir and add
correct oil if necessary.
IMPORTANT: Drain and refill hydraulic system
reservoir and change oil filter if component failure
was severe or system is contaminated. If there is a
severe failure in a closed loop system, flush all
lines and components in the system.
2. After repairs, check the control linkage for proper
adjustment, binding or broken parts.
3. After disconnecting or replacing components,
operate the machine functions slowly until the air is
out of the system.
4. Check for hydraulic leaks. Shut off the engine
and correct leaks if necessary. Check oil level in
the reservoir and add the correct oil if necessary.
The most important rule of hydraulic
system maintenance is...
KEEP EVERYTHING
CLEAN !