Place 1 3 6 12 Months 170 500 1000 2000 Hours LPG fuel system 1*1 1'2 C I ,t t +-- + t +- + + C + C POWER TRANSMISSION SYSTEM Differential Oil leakage Oil level Loose bolts I I C + + + + + T Torque converter and transmis- sion Oil leakage Oil level Operating mechanism function and looseness Control valve and clutch functions Inching valve function Stall test and oil pressure measure- ment I I I I I C + + +- C C + t + t M +- + t -+ Propeller shaft and axle shaft Loose joint ~oosenessa t spline connection Looseness at flexible joint Axle shaft torsion and crack I C t 1 I I