|
E - LOW PRESSURES
|
| Condition |
Probable Causes |
Suggested Remedies |
| Low Main Pressure in All
Ranges |
1. Transmission fluid level low. |
1. Add transmission fluid to the proper
level. (Be sure dipstick calibration is correct for specific model.) |
| 2. Filter element clogged. |
2. Replace filter or element. |
| 3. Sealring on transmission fluid intake
tube damaged or missing. |
3. Install new sealring onto the top end
of the intake tube. |
| 4. Main-pressure regulator valve spring
weak. |
4. Replace spring. |
| 5. Control valve body leaking. |
5. Replace or rebuild control valve body
assembly. Take care when removing valve body components to properly label
the components for proper reassembly. |
| |
6. Valves sticking (trimmer relays and
main-pressure regulator). |
6. Replace or rebuild control valve body
assembly. Take care when removing valve body components to properly label
the components for proper reassembly. |
| |
7. Input charging pump worn or damaged. |
7. Replace or rebuild pump. |
| |
8. Priority valve missing. |
8. Replace missing valve. |
| Low Main Pressure in First
Range, Normal Pressure in Other Forward Ranges |
9. First range circuit leaking in control
valve body. |
9. Replace or rebuild control valve body
assembly. |
| 10. First clutch piston seals leaking. |
10. Overhaul transmission; replace piston
seals. |
| Low Lubrication Pressure |
11. Transmission fluid level low. |
11. Add transmission fluid to the proper
level. (Be sure dipstick calibration is correct for specific model.) |
| 12. Engine idle speed too low. |
12. Refer to vehicle service manual. |
| 13. Cooler lines restricted or leaking. |
13. Check for kinks, leakage; reroute or
replace lines as necessary. |
| 14. Lubrication valve spring weak. (Not
applicable for AT models.) |
14. Replace spring. |
| 15. Lubrication valve not seating. (Not
applicable for AT models.) |
15. Replace lubrication valve. |
| 16. Excessive internal
transmission fluid leakage. |
16. Check other pressures.
Check torque on valve body mounting bolts. |
