New Holland LS140 Workshop Manual page 160

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5. Remove the right engine side shield to access

the charge check valve and test port.

6. Install the pressure test gauge in the test port at

IMPORTANT: Check the hydraulic oil level and add

if required to insure sufficient oil for the test.

7. Start the engine and run it at full throttle (LS140

at 3070 - 3150 RPM; LS150 at 3410 - 3480 RPM)

and take a pressure reading, 7.5 - 8.2 bar (110 -

8. Operate the hydrostatic control levers in forward

and reverse until the system bypasses and take

a pressure reading. Return the controls to neu-

tral. The pressure should be 6.8 - 8.2 bar (100 -

Always stay clear of moving parts during testing

or serious injury could occur.

9. The check valve is not adjustable. Replace the

check valve, 1, if the pressure is not within speci-

fications in step 7. If the pressure is not correct in

step 8, further testing is required, refer to pump

case drain testing.

SECTION 29 - HYDROSTATIC TRANSMISSION

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