Toro 98957SL Rev B Sand Pro 2020 3020 5020 Service Manual

Traction Pump Inspection
5.   Inspect variable housing (Fig. 47).
1.
Inspect end cap (Fig. 45).
A.  Bearing needles must  remain in  the cage, roll
freely, and not be bent or damaged. Remove and re-
place bearings as necessary
A.  Bearing needles must  remain in  the cage, roll
freely, and not be bent or damaged. Remove and re-
place bearings as necessary.
B.  Needle bearings  should be  flush to  1/64 inch
(0.40
mm) below the counter bore for the lip seals.
B.  Journal bearing must be free of damage.
C. The  face surface that contacts with the gerotor
assembly should be free of excessive scoring.
C. Needle and journal bearings should protrude be-
yond face from 3/32 to 1/8 inch (2.38 to 3.18 mm).
2.
scoring on contact surfaces (Fig. 45).
Inspect valve  plate. There  should be  no signs  of
5
NOTE:  The pistons may slide out of the cylinder block.
Piston placement in the bores requires no special orien-
tating. Do not disassemble spring or other parts from the
center bore of the cylinder block.
2
3.
Inspect cylinder block assembly. (Fig. 48).
3
A.  Verify that piston O.D. finish shows  no wear or
deep  scratches. Piston  shoes  should fit  snuggly
onto the ball end of  the pistons. The shoe surface
that contacts the thrust plate should be smooth and
flat. Do not lap piston shoes.
4
6
1
Figure 48
B.  The cylinder block  surface that makes contact
with the valve plate  should be smooth and free  of
deep scratches. Do not lap cylinder block.
1.
2.
3.
Piston assembly
Piston shoe
Cylinder block
4.
5.
6.
Cylinder block bore
Spider pivot
Spider
C. The  bore areas of the cylinder block should be
free of scoring  and contamination. Pistons should
move freely in the bore areas.
D. Examine the mutual contact surfaces on the spi-
der and spider pivot; both contact areas should be
smooth and free of wear.
E.  Replace entire  cylinder block  assembly if  any
components are damaged.
4.
Inspect thrust  plate. There should  be no  signs of
scoring on the piston shoe contact surfaces (Fig. 47).
Sand Pro 2020/3020/5020
Page 4 – 53
Hydraulic System (Rev. A)
Product Specification
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- 170 pages
Document TypeService Manual
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)
Canada 1-888-225-4886 USA 1-888-384-9939, Lawn Mower
Document File TypePDF
Publishertoro.com
Wikipedia's PageToro Company
CopyrightAttribution Non-commercial
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