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 TM 55-1905-219-14-3
Table 3-51. Anchor Winch Torque Converter Troubleshooting (Cont.).
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
2. Poor performance and overheating of converter (Cont).
Step 3.
Check for adequate cooling.
A reservoir is used for the direct cooling of the converter fluid, it may
become clogged. Wash and blow out with air. The reservoir or heat
exchanger tubes may be clogged inside with dirt, rust or extraneous matter,
and in such cases must be thoroughly cleaned and flushed out.
Step 4.
Check if fluid level is too low. Check fluid level in reserve tank with engine
and converter running. If fluid level is below full mark on dip stick, add
enough to bring level up to this mark.
Refer to MALFUNCTION #1, Loss of fluid from converter
Step 5.
Operating too long in low efficiency range.
The cooling reservoir has capacity to adequately cool the converter when
operating above 70% efficiency, however, when the output shaft speed is
pulled down below a predetermined point or goes above another point and
the engine throttle is still wide open, so that the output horsepower becomes
less than 70% of the input horsepower, the cooling capacity of the reservoir
is exceeded. The converter will always overheat when the engine throttle is
wide open and there is no load on the output shaft to pull the speed down.
This is caused by the engine delivering full horsepower to the converter and
no horsepower being transmitted out of the converter, resulting in full
engine horsepower being transformed into heat in the converter.
3-162
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