New Holland LS140 Workshop Manual page 182

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PARTS INSPECTION

Pump Housing

1. Shaft needle bearings, 1, are a tight press-fit in

housing. Inspect for a loose bearing in the hous-

ings. Also check for loose or missing needles in

the bearing housing.

2. All oil seals and O rings should be changed upon

1. Check areas contacting the needle roller bear-

ings, 1, for wear and a rough bearing.

2. Check for a bent or worn shaft.

3. Check the spline areas, 2, for wear or twist.

4. Check the thrust bearing, 3; races, 4; and retain-

ing rings and groove, 5. If bearing or races show

wear or roughness they must be replaced.

5. All oil seals should be changed upon reassembly.

1. Shoes of the pump pistons rotate at high speed

against the cam plate surface at 1. The surface

must be smooth with no metal flaked away and

no scoring. Circular scratches centered on this

machined surface are due to contamination. If

scratches can be felt with your thumbnail, re-

place the cam plate.

2. Check the cam plate surface, 1, for smearing.

This surface must be smooth and bright with no

discoloration or brass color on the flat surface.

3. Inspect the bearing surfaces, 2, for wear.

4. Inspect bearings, 3, and race, 4, for wear, loose-

ness or roughness; replace if damaged.

SECTION 29 - HYDROSTATIC TRANSMISSION

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