(b) Operate and service the alcohol dispenser
as illustrated in figure 2-14.
Table 2-1. Alcohol Dispenser Valve Setting)/g
1 1/8 turns
NOTE 1: For dispensing approximately 9 ounces per hour, operating one, two, or three pumps (with pumps operating at 24 cycles per min.).
NOTE 2: Higher pump operating pressure and faster cycling automatically will increase the amount of alcohol dispensed, so that needle valve must be proportionately closed
to maintain the desired flow.
(2) Exhaust heat diverter.
Lubricate the unit more frequently.
The exhaust diverter lever (fig. 2-4) directs
2-19. Operation in Dusty or Sandy Areas
heat from the engine exhaust to a reservoir beneath
a. Refer to LO 5-4930-207-12 and lubricate the unit
the lubricant tanks or exhausts heat to the atmos-
at more frequent intervals.
b. Make frequent inspections of the engine and
(b) In cold weather operation, duct exhaust
gases to heat reservoir.
the air flow for cooling is not restricted.
(c) Start engine (para 2-11) and close all en-
c. Inspect the fuel filter bowl for sediment at fre-
closure doors (fig. 1-2).
quent intervals. Service fule filter as often as neces-
(d) Allow engine to run about ten minutes,
sary ( para 3-13).
then start the compressor. Wait until compressor un-
d. Remove accumulations of sand and dirt from the
loads before using lubricating pumps.
unit as often as necessary.
d. Lubrication. Refer to LO 5-4930-207-12 for prop-
e. Exercise precautions to keep dirt from entering
the fuel system while servicing the fuel tank.
e. Electrical System. Inspect, clean and tighten all
f. Keep all enclosure doors closed during shut --
electrical connections, especially battery terminals.
Keep batteries fully charged at all times.
f. Fuel System.
2-20. Operation in Rainy or Humid Conditions
(1) Remove snow and ice from fuel tank filler cap
a. Pay special attention to exposed machined parts.
before servicing the fuel tank.
Apply a thin coat of engine oil to exposed parts to
(2) Keep filler cap tight at all times to keep mois-
ture and dirt from the tank.
b. Keep electrical components clean and dry.
(3) Keep the fuel tank full when not in opera-
2-21. Operation in Salt Water Areas
g. Air Cleaner. Refer to TM 5-2805-203-14 and serv-
a. Pay special attention to exposed machined sur-
ice the engine air cleaner at regular intervals.
faces. Keep a thin coat of engine oil on all exposed
h. Compressor Air Cleaner. Service the compressor
parts and keep as clean and free of moisture as
air cleaner at regular intervals (para 3-18).
b. Make sure all unpainted spots are painted or
2-4) and drain the moisture from the air receiver at
coated with a rust preventive compound.
c. When equipment has been exposed to salt water,
2-18. Operation in Extreme Heat
steam clean or wash exposed areas with clean, fresh
water as soon as possible. Dry thoroughly.
a. When operating in extreme high temperatures,
efficient cooling and adequate lubrication of the
2-22. Operation at High Altitudes
engine and air compressor is vitally important.
The air pressure above sea level decreases as the
b. Check the engine cooling shrouds to make sure
altitude is increased. The result is a decrease in air
the air circulation is not restricted through the engine
to the carburetor, causing too rich a fuel mixture. If
shrouds and fins. Refer to TM 5-2805-203-14 and
this condition interferes with engine operation, -
service the engine air cleaner at normal intervals.
refer to TM 5-2805-203-14 and adjust the carburetor.