Traction Pump Disassembly
1.
Charge Pump Disassembly).
Remove charge pump from variable housing (see
7
6
2.
(see Shaft Seal Removal).
Remove lip seals from shaft and trunnion shafts
5
1
IMPORTANT: All exposed surfaces are critical. Use
caution to avoid damage to exposed surfaces.
2
3
3.
cap. Loosen cap screws evenly to prevent distortion of
parts (Fig. 45).
Remove four cap screws and washers from the end
8
9
4
A. Internal spring loading should cause the end cap
to separate slightly from the variable housing. If sep-
aration does not occur during loosening, tap end
cap with a soft hammer until parts separate.
Figure 45
1.
2.
3.
4.
5.
Cap screw
Washer
6.
7.
8.
9.
Locating pin
O–rings
End cap gasket
Needle bearing
End cap
Variable housing
Valve plate
B. Make sure valve plate does not fall and become
damaged. Discard O–rings and end cap gasket.
4.
Remove end cap and valve plate together from the
2
variable housing. If valve plate remains on the cylinder
block, remove it. Remove locating pin from the end cap
(Fig. 45).
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.
1
3
4
5.
Remove cylinder block assembly from the variable
housing. Remove thrust plate from the counterbore in
the face of the swashplate (Fig. 46).
6
Figure 46
4.
IMPORTANT: Make sure not to damage the face sur-
face on the cavity side of the variable housing.
1.
2.
3.
Cylinder block
Piston assemblies
Thrust plate
Variable housing
Cylinder block assembly
Spider
5.
6.
6.
Position variable housing so the large cavity faces
up (Fig. 47).
11
NOTE: The variable housing has a cast recess that al-
lows the spring pins to be driven free of the trunnion
shaft and control shaft.
8
3
9
2
7.
Drive spring pin out of the trunnion shaft and control
5
shaft using a 3/16 inch diameter drift punch (Fig. 47).
6
7
1
10
8.
Drive control and trunnion shafts outward and out of
the swashplate bore. Shafts remove easily once clear of
the swashplate bore (Fig. 47).
4
9.
Remove swashplate from the variable housing. Re-
move retaining ring from the variable housing. Press
shaft out with bearing and retaining ring. Remove retain-
ing ring and bearing from the shaft (Fig. 47).
Figure 47
1.
2.
3.
4.
5.
6.
Variable housing
Spring pins
Control shaft
Trunnion shaft
Swashplate
Shaft
7.
8.
9.
10. Needle bearing
11. Journal bearing
Retaining ring
Ball bearing
Retaining ring
Hydraulic System (Rev. A)
Page 4 – 52
Sand Pro 2020/3020/5020
| Categories | Lawn Mower Manual, Sprinkler and Irrigation Manuals, Toro Sprinkler and Irrigation Manuals |
|---|---|
| Tags | Toro 3020, Toro 5020, Toro 98957SL.Toro 2020 |
| Download File |
|
| Document Type | Service Manual |
| Language | English |
| Product Brand | Toro. Customer Service Representatives are available by phone:
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