Toro 03116SL Rev E Service Manual Groundsmaster 4100 D Preface Publication

3.
4.
Inspect camplate assembly:
3
A.  Thefinishonthepistonshoesurfacesofthecam-
plate (11) should show no signs of scoring.
2
1
B.  Inspect camplate (11) bushing surface for wear.
Also inspect surface for coating transfer from bush-
ing.
4
Inspect bushing (44) for contamination embedment
5
within coating of bushing surface coming in contact with
camplate (11).
Figure 49
4.
5.
5.
Inspect rotating kit (Fig. 49):
1.
2.
3.
Piston assemblies
Spider
Spider pivot
Piston block
Retainer
A.  The pistons should move freely in the rotating kit
piston block bore. If they are sticky in the bore, ex-
amine the bore for scoring or contamination.
.500
(12.7
inch
mm)
B.  Examine the O.D. of the pistons for finish condi-
tion. They should not show wear or deep scratches.
Inspect the shoes for a snug fit on the ball end of the
pistons and a flat smooth surface that comes in con-
tact with the camplate. Do not lap piston shoes.
Right Side
Left Side
C. Examine the spider for wear in the pivot area.
D. Examine  the spider pivot to insure smoothness
and no signs of wear.
Front flange -- Drive shaft end of pump
Adjust to center piston
Install servo piston
in this direction
Reassembly (Fig. 46)
All parts should be cleaned and internal pump parts
1.
Figure 50
lubricated with clean hydraulic oil before reassembly.
5.
(1)
Install new sealwasher (4),washer (29),and jamnut
to servo piston bolt. Holding  servo piston bolt with
2.
to dimension shown in Figure 48 with the numbered end
of bearing outward.
If necessary, press new bearing into pump housing
hexkeywrench,torquejamnutfrom150to160in--lb(17
to 18 N--m). Check the centering of servo piston assem-
bly (7). Install  new cover plate gasket  (33) and cover
plate (9) to open side of servo piston and retain with four
washers  (31)  and  socket  head  screws  (5).  Torque
screws from 40 to 48 in--lb (4.5 to 5.4 N--m).
3.
servo piston cavity of pump housing (19).
Installthetwonewsealsub--assemblies(37)intothe
4.
Screw the cover plate (10) onto the servo piston as-
sembly (7). Install new cover plate gasket (33) in place
on pump housing. Install servo piston assembly (7) and
cover plate (10) into  servo piston bore in right  side of
housing (Fig. 50). Retain cover plate with four washers
6.
bushing (44) onto  cradle with button  head cap screw
(43).
(1.6
Press dowel bushings  (40) into cradle and  secure
Torque button head cap screw from 14 to 16 in--lb
to 1.8 N--m).
(31)
andsocketheadscrews  (5).Torquescrews  from40
to 48 in--lb (4.5 to 5.4 N--m). To obtain neutral, centering
the servo piston assembly is required. Measure in from
the left side and set servo piston .500 in. (12.7 mm) from
surface of servo housing bore as shown in Figure 50.
7.
Place cradle sub--assembly  (41) into housing  (19)
making sure dowel bushings  (40) and cradle (41) are
completely seated into housing. Retain cradle sub--as-
sembly with two cap screws (42) after applying Loctite
#277
screws from 25 to 28 ft--lb (34 to 38 N--m).
(or equivalent) to the end of threads. Torque cap
NOTE:  Re--adjustment may be required for neutral at
machine start--up.
Hydraulic System
Page 4 -- 62
Groundsmaster 4100--D
Product Specification
CategoriesLawn Mower Manual, Sprinkler and Irrigation Manuals, Toro Sprinkler and Irrigation Manuals
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- 258 pages
Document TypeCatalog
LanguageEnglish
Product BrandToro. 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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