8.
thrust bearing (13), second thrust race (12), and second
retaining ring (3) onto drive shaft (21). Position washer
Place exterior retaining ring (3), thrust race (12),
20.Secure control assembly with six socket head
screws (17). Torque screws from 40 to 48 in--lb (4.5 to
5.4 N--m).
(24)
and shaft seal (25) onto shaft.
21.Install
control arm (27) onto control assembly input
9.
(25)
Install shaft assembly into front ofhousing. Seat seal
into position with seal driver and retain with interior
shaft. Retain with lock washer (23) and nut (22). Torque
nut from 4 to 6 ft--lb (5 to 8 N--m).
retaining ring (2).
22.Install
remaining plugs that were removed from
10.Install
servo piston follower (8) onto camplate dowel
pump. Torque 3/4 in. plug from 21 to 24 ft--lb (28 to 32
N--m). Torque 1--1/4 in. plug from 40 to 45 ft--lb (54 to 61
N--m).
pin. Install camplate (11) carefully onto bushing (44)
(coat bushing surface with hydraulic oil), aligning servo
piston follower (8) with slot in servo piston assembly (7).
11.
Position housing in a horizontal position. Holding
camplate (11) in position with screw driver through con-
troller linkage passageway at the top of housing, place
rotatingkitassembly(6)overshaftandintohousinguntil
pistons are against camplate (11). Make sure all parts
are in housing completely and are properly positioned.
Returnthepumptothevisewithopenendofhousingup,
clamping housing on the outer portion of the flange.
12.Install
gasket (32) onto housing.
13.If
necessary, press new bearing (45) and roll pin (38)
inbackplate(20)todimensionshowninFigure43.Note:
Bearing should be installed with the numbered end out-
ward. Roll pin should be installed with split oriented
away from bearing.
14.Install
new o--ring on relief valves (16 & 26). Install
relief valve in the cavity in backplate that it was removed
and torque from 100 to 110 ft--lb (136 to 149 N--m).
15.Install
new o--ring on bypass valve (14). Install by-
pass valve (14) into backplate (20). Note: Make sure
paddle of bypass valve is perpendicular to relief valve
axis prior to installing or damage could result.
16.Apply
a small amount of petroleum jelly to the steel
side of valve plate (18) to hold in place for installation.
Aligning the index pin, place the valve plate (18) in posi-
tion onto the backplate (20), with steel side against
backplate.
17.Install
backplateassembly(20)ontohousingassem-
bly (19). Make sure ports are positioned correctly, and
that valve plate (18) and gasket (32) stay in place.
18.Retain
backplate (20) with four cap screws (15).
Torque cap screws from 27 to 31 (37 to 42 N--m).
19.Install
control housing gasket (34) onto housing.
Install orifices (30) into servo control assembly (28) and
retain in position with petroleum jelly. Position the feed-
back link at 90 degrees from control housing. Install
manual servo control assembly (28) onto housing mak-
ingsurefeedback linkenteredsmallgrooveinservopis-
ton assembly (7).
Groundsmaster 4000--D
Page 4 -- 63
Hydraulic System (Rev. B)
| Categories | Lawn Mower Manual, Toro Lawn Mower Manual |
|---|---|
| Tags | Toro Groundsmaster 4000 D |
| Download File |
|
| Document Type | Service Manual |
| Language | English |
| Document File Type | |
| Publisher | toro.com |
| Wikipedia's Page | Toro Company |
| Copyright | Attribution Non-commercial |
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