Table 5-2. Direct Support Troubleshooting-continued -706880686

TM 5-4210-233-14&P-1

Table 5-2. Direct Support Troubleshooting - Continued

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION

TRANSMISSION - Continued

TRANSMISSION OVERHEATS IN ALL RANGES - Continued

Step 2. Broken parts in converter (can cause excessive fuel consumption). Replace or overhaul

converter assembly.

Step 3. Aerated oil. Adjust oil to proper level; check for defective seal ring at suction tube; check

for defective pump.

Step 4. Cooler flow loss due to internal leakage. Overhaul transmission.

NOISE OCCURRING INTERMITTENTLY (BUZZING)

Step 1. Oil leve l is low. Add oil to proper level. Be sure dipstick calibration is correct.

Step 2. Seal ring on oil pickup tube is damaged or missing. Replace pickup tube seal ring

and filter.

Step 3. Filter is clogged. Replace filter.

Step 4. Aerated oil. Check for improper oil level.

Step 5. Hole in filter. Replace filter.

TRANSMISSION WILL NOT SHIFT INTO GEAR, SLIPS OUT OF GEAR,

OR OPERATES ERRATICALLY

Step 1. Check for low main pressure. Remove line from main pressure port on transmission and

install tee and 0 to 300 psi (O to 2070 kPa) gauge. Start engine and allow to run at idle

speed. With parking brake applied, shift transmission into D (Drive). Check for 90 psi

(621 kPa) main system pressure.

Step 2. Check for clogged internal filter element. Remove oil pan (see para 6-53).

If internal filter element is clogged, replace internal filter element (see para 6-54).

Step 3. Check for damaged or missing preformed packing on internal filter pickup tube.

If preformed packing is damaged or missing, replace preformed packing and gasket

(see para 6-54).

If preformed packing is not damaged or missing, disassemble transmission and inspect oil

pump, main pressure regulator valve, control valve body for leakage or sticking valves

(see para 6-50, 6-51 and 6-62).

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