New Holland LS140 Workshop Manual page 184

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6. The three block loading pins, 1, are spring

loaded. They are held in place by the pin keeper

(split bushing), 2.

Check loading pins:

The pins should be the same height.

The pins should be seated in the special

The head of the pins should be seated be-

tween the washer and block.

1. Check the needle bearings for wear, 1. These

bearings are pressed into the back plate with

bearing numbers to the outside of the back plate.

2. Check the back plate for flatness, 2.

Replaceable bearing plate

1. Check for flatness.

2. Check for scratches on the brass side of the

plate, extending across the area where the piston

block contacts the plate at 3.

3. Check for scratches between the kidney ports at

Relief Valves

1. Two directional relief valves, 1, are located in

each transmission. These relief valves limit the

maximum system pressure to 4500 PSI. Relief

valve pressure is factory set and should not be

2. Check the relief valves for scratches in the seat

areas, 4. Check for broken springs, 3. The

springs should be the same length.

3. Check relief valves for score marks that are evi-

dence of contact with fittings. If evidence of con-

tact, make sure to install fittings to avoid contact.

4. Check the seat area, 2, in the back plate for

scratches that will prevent the relief valves from

sealing properly.

5. Check the caps and O rings, 5.

SECTION 29 - HYDROSTATIC TRANSMISSION

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