Relief Valve Service
IMPORTANT: Do not remove the relief valve as-
sembly unless testing shows it to be faulty.
1.
When removing or installing the relief valve, motor
should be removed from deck and positioned horizon-
tally with the relief valve pointed down (Fig. 83). This
process will prevent the relief valve from falling into mo-
tor passages.
5
4
NOTE: The relief valve seat is difficult to remove be-
cause it has a thin, hex head and has sealant applied to
thethreads.Inspecttheseatcarefullyandremoveitonly
if damage or wear is identified.
3
RELIEF VALVE KIT
2
2.
from the rear cover.
Remove plug with o--ring, spring, and relief valve
1
3.
relief valve seat and plug threads in the rear cover.
Clean and inspect removed parts. Visually inspect
Figure 83
4.
5.
1.
2.
3.
Plug
O--ring
Spring
Relief valve
Relief valve seat
4.
If relief valve seat was removed, apply medium
strength thread locking compound (e.g. Loctite #242) to
seatandinstallinrearcover.Torqueseatfrom4to6ft--lb
(5.4
to 8.1 N--m).
5.
Apply hydraulic oil to relief valve components. Re-
place the relief valve assembly: install relief valve,
spring, and plug with o--ring into the rear cover. Torque
plug from 30 to 35 ft--lb (41 to 47 N--m).
6.
Install motor on cutting deck.
Groundsmaster 4500--D/4700--D
Page 4 -- 93
Hydraulic System (Rev. A)
| Categories | Lawn Mower Manual, Sprinkler and Irrigation Manuals, Toro Sprinkler and Irrigation Manuals |
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| Document Type | Service Manual |
| Language | English |
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