HYDROSTATIC DRIVE SYSTEM
7-44 2007 - 2008 Titan Z Service Manual
7
Troubleshooting
WARNING
Do not attempt any servicing or adjustments with the engine
running. Use extreme caution while inspecting the drive belt
assembly and all vehicle linkage!
Follow all safety procedures outlined in the vehicle owner’s
manual.
In many cases, problems with the ZT-2800™ are not related
to a defective transaxle, but are caused by slipping drive belts,
partially engaged bypass valves, and loose or damaged control
linkages. Be sure to perform all applicable corrective actions
listed below assuming the transaxle is faulty.
TROUBLESHOOTING CHECKLIST
Possible Cause Corrective Action
Unit Operates in One Direction Only
Control linkage bent or out of adjustment Repair or replace linkage
Drive belt slipping or pulley damaged Repair or replace drive belt or pulley
Vehicle Does Not Drive Track Straight
9HKLFOHWLUHVLPSURSHUO\LQÀDWHG Refer to vehicle manufacturer suggested pressure
Control linkage bent or out of adjustment Repair or replace linkage
Bypass assembly sticking Repair or replace bypass
Brake partially engaged Disengage brake, replace broken or missing brake return spring
Unit is Noisy
Oil level low or contaminated oil Fill to proper level or change oil
Excessive loading Reduce vehicle loading
Loose parts Repair or replace loose parts
Bypass assembly sticking Repair or replace linage
Air trapped in hydraulic system Purge hydraulic system
Brake partially engaged Disengage brake, replace broken or missing brake return spring
Unit Has No/Low Power
Engine speed low Adjust to correct setting
Control linkage bent or out of adjustment Repair or replace linkage
Drive belt slipping or pulley damaged Repair or replace drive belt or pulley
Oil level low or contaminated oil Fill to proper level or change oil
Excessive loading Reduce vehicle loading
Bypass assembly sticking Repair or replace linkage
Air trapped in hydraulic system Purge hydraulic system
Brake partially engaged Disengage brake, replace broken or missing brake return spring
Unit is Operating Hot
Debris buildup around transaxle Clean off debris
Cooling fan damaged Repair or replace cooling fan
Oil level low or contaminated oil Fill to proper level or change oil
Excessive loading Reduce vehicle loading
Air trapped in hydraulic system Purge hydraulic system
Brake partially engaged Disengage brake, replace broken or missing brake return spring
Transaxle Leaks Oil
Damaged seals, housing or gaskets Replace damaged components
Air trapped in hydraulic system Purge hydraulic system
!
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