TM 9-2320-279-34-1
Troubleshooting Malfunctions (Cont)
Table 2-3. Troubleshooting (Cont)
Malfunction
Test or Inspection
Corrective Action
TRANSMISSION (CONT)
1.
TRANSMISSION OIL TEMPERATURE GAGE STAYS OVER 250 °F (121 °C) (CONT).
Step 3. Check for clogged internal filter element. Remove oil pan (para 7-11). Inspect filter element.
If internal filter element is clogged, replace internal filter element (para 7-12).
Step 4. Check for damaged or missing preformed packing on internal filter pickup tube.
If preformed packing is damaged or missing, replace preformed packing
(para 7-12).
If preformed packing is not damaged or missing, disassemble transmission and
inspect oil pump, main pressure regulator valve, and control valve body for loose
screws and sticking valves (paras 7-8, 7-9, 7-20).
2. TRANSMISSION NOISY.
Step 1. Check for low lubrication oil pressure. Remove and plug lubrication oil line from lube port.
Install 0 to 100 psi (0 to 690 kPa) gage at lube port. Start engine and increase speed to
approximately 1900 rpm. Check for 25 to 30 psi (172 to 207 kPa) lube system pressure.
If pressure is 25 to 30 psi (172 to 207 kPa), disassemble transmission and check
torque converter, planetary gear assemblies, and bearings for damage (paras 7-7,
7-8, 7-9, and 7-13).
2-13
