Toro 2020, 5020, 3020 Shaft Seal Removal, Shaft Seal Installation, Hydraulic System Rev. A, Page 4

Shaft Seal Removal

NOTE: The hydrostat uses lip seals on the main, con- trol, and trunnion shafts. Replacement of these seals re- quires no disassembly.

1.When replacing trunnion shaft seals, remove retain- ing ring and washer from the housing and shaft.

2.Pry lip seal carefully off the shaft. Make sure not to distort the housing or damage the bore or shaft. Discard seal.

Shaft Seal Installation

1.Polish exposed surface of the shaft. Remove all sharp edges, burrs, dirt, and abrasive residue that could damage the lip seal during installation.

NOTE: The outside diameter of the lip seal may be coated with Loctite High Performance Sealant 5923 or equivalent. This aids the prevention of leaks caused by seal bore damage.

2.Lubricate shaft with clean hydraulic oil. Slide lip seal over shaft carefully. Make sure not to damage lip seal. Press seal into housing bore.

3.Replace washer if it is noticeably bent or distorted.

4.After replacing trunnion shaft seals, reinstall washer and retaining ring to the shaft and housing.

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		Figure 42
1.	Retaining ring	3.	Lip seal
2.	Washer	4.	Lip seal

Hydraulic System (Rev. A) Page 4 – 50 Sand Pro 2020/3020/5020