TOHATSU BFT250A Service Manual page 118

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TROUBLESHOOTING
3. Oil leak inspection
Check for oil leakage from the power trim/tilt.
Is there oil leakage?
YES
NO
4. Oil level inspection
Check the oil level with each rod fully extended.
Is the oil level within the specification?
YES
NO
5. Air bleed inspection
Check for air in the system.
Air in the system?
YES
NO
POWER TRIM/TILT DOES NOT HOLD POSITION
1. Manual valve inspection
Check the manual valve tightness.
Is the manual valve tight?
YES
NO
2. Oil leak inspection
Check for oil leakage from the power trim/tilt.
Is there oil leakage?
YES
NO
3. Hydraulic pressure inspection
Check the hydraulic pressure (page 19-33).
Is the hydraulic pressure within the specification?
YES
NO
4. Oil level inspection
Check the oil level with each rod fully extended.
Is the oil level within the specification?
YES
NO
5. Air bleed system inspection
Check for air in the system.
Air in the system?
YES
NO
4-26
– Replace the O-ring and oil seal at the leaking point (if the manual valve O-ring or piston rod A
(cylinder cap) oil seal is leaking, replace it as an assembly).
– GO TO STEP 4.
– GO TO STEP 5.
– Fill the oil to the specified level.
– Bleed air from the system (page 19-31)
– Power trim/tilt faulty.
Repair the faulty part by referring to the "POWER TRIM/TILT QUICK
REFERENCE CHART (page 4-28).
– GO TO STEP 2.
– Tighten the manual valve to the specified torque: 3.4 N·m (0.35 kgf·m, 2.5 lbf·ft)
– Replace the O-ring and oil seal at the leaking point (if the manual valve O-ring or piston rod A
(cylinder cap) oil seal are leaking, replace it as an assembly).
– GO TO STEP 3.
– GO TO STEP 4.
– Replace the pump (page 19-19).
– GO TO STEP 5.
– Fill the oil to the specified level.
– Bleed air from the system (page 19-31)
– Power trim/tilt faulty.
Repair the faulty part by referring to the "POWER TRIM/TILT QUICK
REFERENCE CHART (page 4-28).