Pages 3-1 thru 3-3 are deleted. All information regarding operation is contained in TM 5-3820-256-10.
Maintenance
3-3
WATER PUMP.
3-3.1
Lubrication. The water pump requires lubrication only where grease fittings are provided. Use a good grade
of gun grease. Lubrication should be done every four (4) hours of continuous operation.
3-3.2
Troubleshooting.
When the pump is requiring an excessive amount of power, the causes may be due to one of the following:
1.
Pump has been run dry and gears have swelled due to heat caused by friction.
2.
Liquid more viscous than anticipated.
3.
Pumping against excess pressure.
4.
Discharge line too small causing excess pressure.
5.
Discharge line obstructed causing excess pressure.
6.
Foreign matter lodged in pump.
7.
Shaft bent due to dropping, etc.
8.
Too great a lift causing excess pressure.
9.
Removal of too many gaskets, causing drag on gears.
3-4
