Toro Greensmaster TriFlex 3300 Service Manual page 142

Mow/Backlap Spool (Fig. 67)
1. To remove mow/backlap spool from manifold:
A. Remove backlap switch from manifold before re-
moving mow/backlap spool (Fig. 65). Remove shim
and ball from manifold port after switch is removed.
Remove and discard O--ring from switch.
B. Remove lower retaining ring from mow/backlap
spool. Raise mow/backlap spool to allow access to
retaining ring on upper end of spool. Remove upper
retaining ring.
C. Push spool down until lower O--ring and back--up
ring are exposed on bottom of manifold. Remove
lower O--ring and back--up ring from spool.
D. Pull spool up and out of manifold. Remove O--
rings and back--up ring from spool.
E. Discard removed O--rings and back--up rings.
2. Visually inspect the spool and manifold port for dam-
age to the sealing surfaces and contamination.
3. To install mow/backlap spool into manifold:
A. Install O--rings and back--up ring to upper
grooves on spool. Apply a light coating of grease to
O--rings.
B. Carefully push spool down into manifold port until
lower O--ring and back--up ring groove is exposed on
bottom of manifold. Install lower O--ring and back--up
ring to spool. Apply a light coating of grease to O--
ring.
C. Install lower retaining ring to spool.
D. Carefully raise mow/backlap spool until upper re-
taining ring groove on spool is exposed on top of
manifold. Install upper retaining ring.
E. If handle was removed from spool, position spool
so handle location of spool is between spring pins in
manifold. Apply Loctite 603 Retaining Compound (or
equivalent) to threads on handle and install handle
into spool. Torque handle 10 ft- -lb (13.5 N- -m).
F. Place ball and shim in manifold port SW (backlap
switch). Install new O--ring onto backlap switch.
Thread backlap switch into port and torque 20 ft- -lb
(27 N- -m).
Hydraulic System
Loctite 603
1. Retaining ring
2. O- -ring
3. Back- -up ring
Page 5 - - 90
1
2
3
4
5
2
3
1
Figure 67
4. Rotary spool
5. Spool handle
Greensmaster 3300/3400