Tuff Torq K92 - Hydrostatic Transmission 2 WD and 4 WD

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Hydrostatic Transmission 2WD and 4WD

Hydrostatic Transmission Removal:

1. Remove charge pump. (See “Charge Pump Removal

and Installation” on page 2)

IMPORTANT: Avoid damage! Do not drop or damage pump

valve plate when removing center valve block assembly. Do

not nick or scratch lapped or machined surfaces of the valve

plates or cylinder block components. The slightest damage

can cause poor performance.

Fig. 53, 2WD Shown (4WD similar)

2. Remove cap screws (A) — leaving in place 2 cap screws

(D). Carefully remove center valve block (B) and

motor assembly from transaxle.

3. Replace gasket (C) if torn or damaged.

Hydrostatic Transmission Motor Removal:

Fig. 54, 2WD Shown (4WD similar)

2WD Shown

1. Remove retaining ring (B), bevel input pinion (C),

and ball bearing (A).

2. Inspect bearing for smooth rotation.

NOTE: Bevel input pinion and bevel input gear must

be re-placed as a set.

3. Check pinion for wear or damage.

4. Replace retaining ring if ring is distorted during

remov-al.