Service Manual

TUFF TORQ TRANSAXLE
3 - 14 260 Series Tractor Service Manual
Troubleshooting – Tuff Torq Transaxle
Refer to K61A Transaxle Service Manual, form # 492-0699, for internal service procedures.
Problem Possible Cause
No Drive • Incorrect oil/oil level in unit.
• Drive belt has failed, is worn, or is out of adjustment.
• Push valve in push position.
• Parking brake engaged.
• Control pedal linkage worn, loose disconnected.
• Engine pulley or transmission pulley sheared/missing.
• Wheel hub key sheared/missing.
• Push valve stuck or spring broken.
• Damage to rotating groups or internal valving.
• Damaged pinion shaft or differential assembly.
No Drive – one direction • Control pedal bent or broken.
• Control pedal rod bent or binding.
• Control arm roll pin sheared.
• Directional valves sticking, broken springs, or need to be cleaned of debris.
Low Power – both directions • Incorrect oil/oil level in unit.
• Drive belt has failed, is worn, is out of position, at incorrect tension, or
engine. RPM is low.
• Push valve partially activated.
• Parking brake engaged or binding.
• Control pedal or linkage binding.
• Engine or transaxle drive pulleys loose, damaged, or worn.
• Directional valves sticking, need to be cleaned of debris, broken springs.
• Damage to rotating groups or valve body.
• Swash plate worn, damaged, not operating properly.
• Damaged output pinion or differential assembly.
Low Power – one direction • Incorrect oil/oil level in unit.
• Control pedal or shaft bent, binding, or travel.
• Control rod bent or binding.
• Control arm is not secure on shaft.
• Swash plate worn, damaged, not operating properly.
• Damaged output pinion or differential assembly.
Creeps in neutral • Neutral adjustment eccentric out of position.
• Control pedal bent or binding.
• Swash plate control lever pin damaged, bent, binding, or worn.
• Swash plate cradle bearings failed, worn, or damaged.
• Swash plate control arm ball and socket damaged or worn.
• Neutral return spring failed, fatigued, or out of position.