SECTION 44 - AXLES AND WHEELS
44-7
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 RESULT PROBABLE CAUSE AND CORRECTION
1 Push both drive controls
forward equally and loader
should move in a straight line.
YES
NO
Drive system OK.
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.
2 Check final drive chain, broken repair.
3 Pull both drive controls
rearward equally and loader
should move in a straight line.
YES
NO
Drive system OK.
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.
Pre-test instructions:
* Lower boom and attachment to the ground.
* Stop engine.
* Jack loader with wheels off the ground.
* Release parking brake.
STEP TEST RESULT PROBABLE CAUSE AND CORRECTION
1 Rotate each tire by hand, tires
move less than 1/4″ at tread.
YES
NO
Drive system OK.
Tires move more than 1/4″ at tread, check chain
tension.
2 One tire rotates freely, broken chain, or axle spline
worn.
3 Both tires on one side rotate freely together,
inspect drive gearboxes. If OK, check drive motor.
4 Tires rotate but are noisy. YES
NO
Check drive chains, axle bearings.
Drive system OK.