Disassembly (Fig. 74)
Assembly (Fig. 74)
1.
Plug all ports and clean outside of valve thoroughly.
1. Thoroughlycleananddryallparts.Applyalightcoat-
ing of clean hydraulic oil to parts prior to assembly.
2.
Remove spool caps (9). Do not remove retaining
rings (12) from spools unless spool spring (19) is bro-
ken.
NOTE: AllO--rings,back--upwashers, wiper seals,and
nylon poppets should be replaced as new items.
NOTE: Spools and spool bores are matched sets. Be
sure each spool is identified with the correct valve body
spool bore.
2. Install new O--rings (11) in proper grooves in spool
bores.
3.
Install relief valve components (13, 14, 15, 31, and
3.
4.
5.
Remove spools (35) from valve body (36).
Remove bushings (8) and O--rings (11) from spools.
Remove plugs (6).
10) with new O--ring (34) on plug assembly (32).
4. Install plugs (6) with new back--up washers (20) and
O--rings (7).
5.
Install plungers (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.
(1),
Remove plugs (29), lockout springs (30), poppets
seats (4) and plungers (28 and 33).
6. Install new O--rings (5) on seats (4). Install new
back--up washers (26) and O--rings (25) on plugs (29).
7.
8.
Remove plug (17).
7. Install seats (4), new poppets (1), and plugs (29).
8. Install plug (17) with new O--ring (18).
Remove detent plug (23), disc (27), detent spring
and detent plunger (22).
(21)
9.
Install detent plunger (22), spring (21), disc (27), and
9.
and 15), relief valve spring (31), and relief valve poppet
(10).
Remove relief plug assembly (32), washers (13, 14,
plug (23) with new O--ring (24).
10.If
retaining ring (12) has been removed to replace
spool spring (19), install washer (16), spring (19), and
spacer (2) on spool. Secure with retaining ring (12).
10.Remove
and seats.
allO--ringsandback--upringsfromallplugs
11.
Slide bushings (8) over spools. Slide new O--rings
Inspection
(11) over spools and position next to bushings. Dip
spoolsincleanhydraulicoilandinstallspoolassemblies
into proper location of valve body.
1.
Remove all nicks and burns from parts and inspect
for excessive wear.
12.Install
(27
spool caps (9) and tighten from 20 to 25 ft--lb
to 33 N--m).
new wiper seals (3).
2.
roughness.
Inspect all plungers and poppet seats for burrs or
13.Install
3.
Inspect spool springs (19), relief valve spring (31),
lockout springs (30), and detent spring (21) for break-
age.
4.
If spools (35) have excessive wear, the control valve
becomes non--serviceable as the spools and spool
bores are matched. Damaged spools cannot be re-
placed individually.
5.
Inspectreliefvalvepoppet(10) forbreakage orwear.
Groundsmaster 4100--D
Page 4 -- 93
Hydraulic System
| Categories | Lawn Mower Manual, Sprinkler and Irrigation Manuals, Toro Sprinkler and Irrigation Manuals |
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| Tags | Toro Groundsmaster 4100 D |
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| Language | English |
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