Toro 41188, Service Manual

Page: 99 / 353

Multi Pro 1750 Hydraulic System Page 4 − 51
Removing the Boom Lift Cylinders (Fig. 38)
1. Park the machine on a level surface, stop the spray
pump, fully raise the spray booms, engage the parking
brake and stop the engine. Remove the key from the
ignition switch.
WARNING
Make sure that spray booms are fully raised and
resting in the boom cradles before loosening hy-
draulic lines, cartridge valves or plugs from lift
control manifold. If booms are not fully raised as
manifold components are loosened, booms may
drop unexpectedly.
CAUTION
Before disconnecting components or perform-
ing any work on hydraulic system, all pressure in
the system must be relieved (see Relieving Hy-
draulic System Pressure in this chapter).
2. Label hydraulic hoses for assembly purposes. Thor-
oughly clean hydraulic hose ends prior to disconnecting
the hoses from boom lift cylinder.
3. Disconnect hydraulic hoses from boom lift cylinder.
Allow hoses to drain into a suitable container.
4. Put caps or plugs on disconnected hoses and cylin-
der ports to prevent contamination.
5. Remove cotter pin (item 3) and clevis pin (item 2) that
secure lift cylinder rod end to boom pivot bracket.
6. Remove flange head screw (item 7) and flange nut
(item 6) that secure pivot pin (item 5) to cylinder mount
plate. Slide pivot pin from mount plate and remove lift
cylinder.
Installing the Boom Lift Cylinders (Fig. 38)
1. Position lift cylinder to cylinder mount plate and
boom pivot bracket.
2. Slide pivot pin (item 5) through cylinder mount plate
and lift cylinder. Secure pivot pin to mount plate with
flange head screw (item 7) and flange nut (item 6).
3. Secure lift cylinder shaft rod end to boom pivot brack-
et with clevis pin (item 2) and cotter pin (item 3).
4. Remove caps and plugs from disconnected hoses
and cylinder ports.
5. Lubricate new O−rings and connect hydraulic hoses
to boom lift cylinder. Tighten hose connections (see Hy-
draulic Hose and Tube Installation in this chapter).
6. Check fluid level in transaxle and adjust as required
(see Operator’s Manual).
7. Operate boom lift cylinder before returning machine
to service. Nothing should contact the hydraulic hoses
or cylinder at any time during operation, and there
should be no fluid leaks.
Hydraulic
System