Service Manual

ZT-2100 / ZT-2200 (EZT
®
) 9
Vehicle tires improperly inated Refer to vehicle manufacturer suggested pressure
Control linkage bent or out of adjustment Repair or replace linkage, Pages 10 and 13
Bypass assembly sticking Repair or replace bypass, Page 25
WARNING
Do not attempt any servicing or ad-
justments 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.
TROUBLESHOOTING
In many cases, problems with the ZT-2100 and
ZT-2200 (EZT
®
) 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 operational checks and adjustments outlined
in the Service and Maintenance section before
assuming the transaxle is malfunctioning. Table
5 below provides a troubleshooting checklist
to help determine the cause of operational
problems.
Table 5. ZT-2100 and ZT-2200 (EZT) Troubleshooting Guide
Possible Cause Corrective Action
UNIT OPERATES IN ONE DIRECTION ONLY
UNIT IS NOISY
UNIT HAS NO/LOW POWER
TRANSAXLE LEAKS OIL
Control linkage bent or out of adjustment Repair or replace linkage, Page 10
Drive belt slipping or pulley damaged Repair or replace drive belt or pulley, Page 10
Oil level low or contaminated oil Fill to proper level or change oil, Page 11
Excessive loading Reduce vehicle loading, Page 10
Loose parts Repair or replace loose parts
Bypass assembly sticking Repair or replace linkage
Air trapped in hydraulic system Purge hydraulic system, Page 12
Engine speed low Adjust to correct setting
Control linkage bent or out of adjustment Repair or replace linkage, Page 10
Drive belt slipping or pulley damaged Repair or replace drive belt or pulley, Page 10
Oil level low or contaminated oil Fill to proper level or change oil, Page 11
Excessive loading Reduce vehicle loading, Page 10
Bypass assembly sticking Repair or replace linkage
Air trapped in hydraulic system Purge hydraulic system, Page 12
Debris buildup around transaxle
Clean off debris, Pages 2 and 10
Cooling fan damaged Repair or replace cooling fan
Oil level low or contaminated oil Fill to proper level or change oil, Page 11
Excessive loading Reduce vehicle loading, Page 10
Air trapped in hydraulic system Purge hydraulic system, Page 12
Damaged seals, housing, or gaskets Replace damaged component
Air trapped in hydraulic system Purge hydraulic system, Page 12
VEHICLE DOES NOT DRIVE/TRACK STRAIGHT
UNIT IS OPERATING HOT