Testing - New Holland LS140 Workshop Manual

TESTING

FINAL DRIVE
Pre-test instructions:
* Operator in seat with seat belt buckled.
* Engine running at high idle (full throttle).
* Park brake disengaged position.
STEP TEST
1 Push both drive controls for-
ward equally and loader should
move in a straight line.
2
3 Pull both drive controls rear-
ward equally and loader should
move in a straight line.
Pre-test instructions:
* Lower boom and attachment to the ground.
* Stop engine.
* Jack loader with wheels off the ground.
* Release parking brake.
STEP TEST
1 Rotate each tire by hand, tires
move 1/4" or less at tread.
2
3
4 Tires rotate but are noisy.
SECTION 44 - AXLES AND WHEELS
RESULT PROBABLE CAUSE AND CORRECTION
YES Drive system OK.
NO Engine stalls, wheels appear locked, check parking
brake for engaged. If OK go to step 2.
Slow or no power, refer to hydrostatic drive section.
Check final drive chain, broken repair.
YES Drive system OK.
NO Engine stalls, wheels appear locked, go to step 1.
Wheels rotate slow or no power, go to step 1.
One side of loader drags, go to step 2.
RESULT PROBABLE CAUSE AND CORRECTION
YES Drive system OK.
NO Tires move more than 1/4" at tread, check chain ten-
sion.
One tire rotates freely, broken chain, or axle spline
worn.
Both tires on one side rotate freely together, inspect
primary drive chain. If OK, check drive motor.
YES Check drive chains, axle bearings.
NO Drive system OK.
44-7
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