Disassembly (Fig. 91)
Plug all ports and thoroughly clean outside of control
Assembly (Fig. 91)
1.
1. Thoroughlycleananddryallparts.Applyalightcoat-
ing of clean hydraulic oil to parts prior to assembly.
valve.
2.
(item 12) from spools unless spring (item 19) is broken.
Removecaps(item9).Donotremoveretainingrings
NOTE: All O--rings, back--up washers, wiper seals and
nylon poppets should be replaced with new items.
NOTE: Spools and spool bores are matched sets. Be
sure each spool is identified with the correct body spool
bore.
2. Install new O--rings (item 11) in proper grooves in
spool bores.
3.
Install relief valve components (items 13, 14, 15, 31
3.
4.
Remove spools (item 35) from body (item 36).
and 10) with new O--ring (item 34) on plug assembly
(item 32).
Remove bushings (item 8) and O--rings (item 11)
from spools.
4. Install plugs (item 6) with new back--up washers
(item 20) and O--rings (item 7).
5.
Remove plugs (item 6).
5.
Install plungers (items 33 and 28).
IMPORTANT: Check location and positioning of
plungers when removing from body to assure prop-
er assembly.
IMPORTANT: Check location and positioning of
plungers during installation.
6.
(item 1), seats (item 4) and plungers (items 28 and 33).
Remove plugs (item 29), springs (item 30), poppets
6. Install new O--rings (item 5) on seats (item 4). Install
new back--up washers (item 26) and O--rings (item 25)
on plugs (item 29).
7.
Remove plug (item 17).
7.
(item 29).
Install seats (item 4),newpoppets (item1) andplugs
8.
21)
Remove plug (item 23), disc (item 27), spring (item
and detent plunger (item 22).
8.
Install plug (item 17) with new O--ring (item 18).
9.
Remove relief plug assembly (item 32), washers
(items 13, 14 and 15), spring (item 31) and poppet (item
10).
9. Install detent plunger (item 22),spring (item 21),disc
(item 27) and plug (item 23) with new O--ring (item 24).
10.Remove
and seats.
allO--ringsandback--upringsfromallplugs
10.If retaining ring (item 12) has been removed to re-
place spool spring (item 19), install washer (item 16),
spring (item 19), spacer (item 2) and secure with retain-
ing ring (item 12).
Inspection
1.
for excessive wear.
Remove all nicks and burns from parts and inspect
11.
Slide bushings (item 8) over spools. Slide new O--
rings (item 11) over spools and position next to bush-
ings. Dip spools in clean hydraulic oil and install spool
assemblies into proper location of body.
2.
roughness.
Inspect all plungers and poppet seats for burrs or
12.Install
ft--lb (27 to 33 N--m).
spool caps (item 9) and tighten from 20 to 25
3.
(item 31), lockout springs (item 30) and detent spring
(item 21) for breakage.
Inspect spool springs (item 19), relief valve spring
13.Install
new wiper seals (item 3).
4.
If spools (item 35) have excessive wear, the control
valve becomes non--serviceable as the spools and
spool bores are matched. Damaged spools cannot be
replaced.
5.
Inspect relief valve poppet (item 10) for breakage or
wear.
Groundsmaster 4000--D
Page 4 -- 131
Hydraulic System
| Categories | Lawn Mower Manual, Sprinkler and Irrigation Manuals, Toro Sprinkler and Irrigation Manuals |
|---|---|
| Tags | Toro Groundsmaster 30412, Toro Groundsmaster 4000 D |
| Download File |
|
| Document Type | Catalog |
| Language | English |
| Product Brand | Toro. Customer Service Representatives are available by phone:
Monday - Friday 7:30 a.m. to 9:00 p.m. (CDT) - Saturday 8:00 a.m. to 8:00 p.m. (CDT) - Sunday 10:00 a.m. to 8:00 p.m. (CDT)
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| Publisher | toro.com |
| Wikipedia's Page | Toro Company |
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