Diagnosis-K55 - Sabre 1338 Gear Technical Manual

HYDROSTATIC POWER TRAIN
DIAGNOSIS—K55
Test Conditions:
• Tractor operated in test area.
• Engine at operating temperature.
Test/Check Point
1. Shift linkage
2. Brake linkage and
assembly
3. Neutral return linkage
Test Conditions:
• Tractor on level surface.
• Engine OFF.
Test/Check Point
4. Hydro housing exterior
5. Transport (free wheeling)
valve and linkage
6. Internal hydro components
6 - 26
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Normal
Shift linkage adjusted properly and working
smoothly.
Brake and brake linkage adjusted properly
and working smoothly.
Brake components not worn or damaged.
Neutral return linkage adjusted properly
and working smoothly.
Normal
No cracks, leaks, or loose hardware.
Transport linkage engaging and
disengaging properly.
No worn, scored or scratched
components.
Correct type and quality of oil. Oil
not dirty or burnt.
Retaining snap rings in good shape
and seated correctly.
• Tests run at engine slow idle and fast idle.
• Hydro run through full range of speeds in both
directions.
Repair or replace as needed.
Adjust as needed. See "BRAKE
SPRING ADJUSTMENT—K55"
on page 33.
Repair or replace as needed.
Repair or replace as needed.
Adjust as needed.
Repair or replace as needed.
• Front wheels blocked.
• Rear wheels raised off surface with axle housings
on jack stands.
Tighten hardware.
Repair or replace transaxle
housing. Replace any damaged
components.
Adjust.
Repair or replace as needed.
Repair or replace as needed. See
"TRANSAXLE REMOVAL AND
INSTALLATION—K55" on page 41.
Fill to proper level.
Replace with correct or unburned
oil.
Repair or replace as needed.
DIAGNOSIS
If Not Normal
If Not Normal
2/12/97