Toro Groundsmaster 5900 Series Service Manual page 229

Cartridge Valve Service
Groundsmaster ® 5900 & 5910
16227SL Rev B
An orifice is placed beneath the plug in the OR1 port of the LH and
RH cutting deck control manifolds only. If the plug is removed,
make sure to remove the orifice and label its position for assembly
purposes. The front cutting deck control manifold has an additional
zero leak plug instead of an orifice in the OR1 port. When servicing
the deck control manifolds, DO NOT interchange parts from one
control manifold to another.
Note: The cutting deck control manifolds include several zero−leak plugs. These
plugs have a tapered sealing surface on the plug head that is designed to resist
vibration induced plug loosening. The zero−leak plugs also have an O−ring as a
secondary seal. If zero−leak plug removal is necessary, lightly rap the plug head
using a punch and hammer before using an allen wrench to remove the plug: the
impact will allow plug removal with less chance of damage to the socket head of
the plug. Tighten plugs to torque value provided
For cartridge valve service procedures, see
5–158).
IMPORTANT
Cartridge Valve Service (page
Page 5–129
(Figure 114).
Hydraulic System: Service and Repairs