Service Manual

310-3000 IHT 5
WARNING
Do not attempt any servicing or adjust-
ments with the engine running.
Use extreme caution while inspecting the
drive belt assembly, and all vehicle link-
age!
Follow all safety procedures outlined in
the vehicle owner’s manual!
SECTION 3. TROUBLESHOOTING
In many cases problems with the 310-3000 IHT
are not related to a defective transmission or axle,
but are caused by slipping drive belts, partially
engaged bypass valves, and loose or damaged
control linkages. Be sure to perform all opera-
tional checks and adjustments outlined in Sec-
tion 4 before assuming the unit is malfunction-
ing. Table 2 below provides a troubleshooting
check list to help determine the cause of opera-
tional problems.
Possible Cause
Table 2. 310-3000 Troubleshooting Checklist
Corrective Action Refer To:
UNIT OPERATES IN ONE DIRECTION ONLY
Control linkage bent or out of adjustment
Drive belt slipping or pulley damaged
Repair or replace linkage
Repair or replace drive belt or pulley
UNIT IS NOISY
Oil level low or contaminated oil
Excessive loading
Brake setting incorrect
Loose parts
Bypass assembly sticking
Air trapped in hydraulic system
Fill to proper level or change oil
Reduce vehicle loading
Adjust brake to proper setting
Repair or replace loose parts
Repair or replace valve or linkage
Purge hydraulic system
UNIT HAS NO/ LOW POWER
Engine RPM low
Control linkage bent or out of adjustment
Brake setting incorrect
Drive belt slipping or pulley damaged
Oil level low or contaminated oil
Excessive loading
Bypass assembly sticking
Air trapped in hydraulic system
Adjust to correct setting
Repair or replace linkage
Adjust brake to proper setting
Repair or replace drive belt or pulley
Fill to proper level or change oil
Reduce vehicle loading
Repair or replace valve or linkage
Purge hydraulic system
UNIT OPERATING HOT
Debris buildup around transaxle
Brake setting incorrect
Cooling fan damaged
Oil level low or contaminated oil
Excessive loading
Air trapped in hydraulic system
Clean off debris
Adjust brake to proper setting
Repair or replace cooling fan
Fill to proper level or change oil
Reduce vehicle loading
Purge hydraulic system
TRANSAXLE LEAKS OIL
Damaged seals, housing, or gaskets
Air trapped in hydraulic system
Replace damaged component
Purge hydraulic system
Control Linkage Repair, Page 17
Pulley Repair, Page 20
Fluid Maintenance, Page 7
Vehicle Specifications
Brake Adjustment, Page 8
Appropriate Repair Procedure
Bypass Repair, Page 16
Purging Procedure, Page 11
Vehicle Specifications
Control Linkage Repair, Page 17
Brake Adjustment, Page 8
Pulley Repair, Page 20
Fluid Maintenance, Page 7
Vehicle Specifications
Bypass Repair, Page 16
Purging Procedure, Page 11
Brake Adjustment, Page 8
Cooling Fan Repair, Page 20
Fluid Maintenance, Page 7
Vehicle Specifications Purging
Procedure, Page 11
Appropriate Repair Procedure
Purging Procedure, Page 11