Service Manual

ManualsBrandsToro ManualsTrenchersToro 22970

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113PW / PY Series

Refer to Figure 4.

Disassembly

1. Remove retaining ring (3) from housing (15).

2. Remove lip seal (6). Care must be taken to

prevent damage to the housing bore, shaft,

sealing surface, or bearing. Once removed, the

seal is not reusable.

Inspection

1. With the lip seal (6) removed, inspect the spacer

(4), shaft bearing (5) and housing (15) bore.

Assembly

1. Lubricate the new lip seal (6) with petroleum

jelly.

2. Wrap the input shaft (1) with plastic wrap to

prevent damage to the inner surface of the lip

seal (6).

3. Slide the seal (6) over shaft (1) so that lettering

on the seal (6) faces out.

4. Press the lip seal (6) into the housing (15) bore.

Insure seal (6), shaft (1) or housing (15) bore

do not become damaged. Remove the plastic

wrap.

5. Install the retaining ring (3) into the housing (15)

bore groove.

REMOVAL, INSPECTION AND/OR

REPLACEMENT OF INPUT SHAFT

SEAL

Figure 4. PW / PY Pump Input Shaft Seal

REMOVAL, INSPECTION AND/OR

REPLACEMENT OF TRUNNION

ARM (CONTROL ARM) SEAL

Figure 5. PW / PY Pump Trunnion Arm Seal

Refer to Figure 5.

Disassembly

1. Remove the retainer and lip seal (12). Care

must be taken to prevent damage to the housing

trunnion bore, trunnion arm (13) and sealing

surface. Once removed the retainer and lip seal

(12) is not reusable.

Inspection

1. With the lip seal (12) removed, inspect the area

for corrosion and wear. Inspect the trunnion bore

area sealing surface for damage or wear.

Assembly

1. Lubricate the new lip seal (12) with petroleum

jelly.

2. Wrap the trunnion arm (13) with plastic wrap to

prevent damage to the inner surface of the lip

seal (12).

3. Slide the lip seal (12) over the trunnion arm (13)

so that the lettering on the seal (12) faces out.

4. Press the lip seal (12) into the housing bore

(15). Insure the seal (12), trunnion arm (13),

and housing bore do not become damaged.

Remove the plastic wrap.

5. Install the retainer over the trunnion arm (13) on

top of the lip seal (12). Press into the trunnion

seal bore in the housing (15).