Preparation For Starting

*TM 9-2815-213-34

Also, connect a manometer to the Blow-By Tool

3-171. Starting Engine

measure the amount of blow-by gases escaping past the

a. Position the throttle at idle speed.

piston rings.

b. Disengage the drive unit.

NOTE

c. Electrical shut-down valve operates (opens)

This is essential to indicate seating of

automatically.

rings and to ascertain if and when

NOTE

additional run-in time is necessary.

A manual override knob provided on the

forward end of the electric shut-down

3-170. Preparation For Starting

valve allows the valve to be opened in

As an assist in priming the fuel and lubricating oil s3-

case of electric power failure.

stems it is recommended that all filter: removed and

operate "open" by turning fully clockwise.

serviced with their respective

d. Press starter button or turn switch-key to "start"

a. Prime fuel pump before starting engine the first

position.

time. Remove plug next to tachometer drive and fill with

e. Warm-up engine.

clean diesel fuel.

f. Check all tubing, hoses, lines, fittings and

b. Check Fuel Tanks. There must be an adequate

plugs for leaks. Correct as necessary.

supply of good grade, clean diesel fuel the tanks.

g. Open cooling water supply valves to heat

c. Close all drain cocks and open vent cocks, on

exchanger. Introduce water to absorption unit per

air compressor and vent (pipe plugs) water crossover

manufacturers instructions.

tubes to insure circulation.

d. Fill engine with required coolants until it flows

3-172. Test Procedure

from vent cocks and vents; close all vents and fill the

NOTE

system.

Dynamometer manufacturers provide a

e. Fill oil pan to "L" (low) mark on dipstick.

figure known as a "brake constant" with

f. Connect a hand or motor driven priming pump

each dynamometer.

This simplifies

line from a source of clean OES-20 It lubricating oil to Oil

computing brake horsepower,

since

Cooler (Left Bank) "INL OUTLET" connections, fill oil

only engine rpm and the scale reading in

pan to "H" position of the dipstick.

pounds need be found.

g. Prime until a 30 psi minimum pressure obtained.

h. Crank engine for at least 15 seconds while

a. Horsepower Ratings.

maintaining external oil pressure at a minimum of 15 psi.

(1) The maximum horsepower rating 300 at

i. Allow engine to fire and operate 5 to seconds.

3000 rpm is established for engines on number 1 curve

j. Remove external oil supply and replace full flow

in figure 101 in automotive or intermit- tent-duty

oil filter system as used on the vehicle.

applications at sea level, 60 degrees Fahrenheit intake

k. Fill crankcase with oil to "H" (high) n on dipstick.

air temperature and 29.92 inches Hg.

(Mercury

Grades used, OES-10, OES-2( OES-30, will depend on

barometric pressure).

ambient temperature. special oil is required for break-in

(2) Where necessary an engine may be de-

period. change in oil viscosity or type is needed for or

rated because of high altitude-operation or for the sake

newly rebuilt engines.

of fuel economy, the derating may be done by reducing

governed rpm or maximum fuel rate in the proportion

CAUTION

desired.

Service engine oil after a few minutes of

(3) Naturally-aspirated engines must be

operation to compensate for oil

derated 3 percent for each 1000 feet altitude above sea

absorbed into filter- elements and

level, and 1 percent for each 10 degrees Fahrenheit

leakage.

ambient temperature rise above 60 degrees Fahrenheit.

l. Check Oil Level. Add oil if necessary to reach

(4) New or rebuilt engines during dyna-

mometer test are not required to deliver more than 96

the "H" level on the dipstick. Never operate engine

percent of maximum horsepower at power checks. The

below "L" mark or above "H" mark.

additional 4 percent will be achieved after a few hours

operation.

b. Break-In-Run.

Start engine and idle at

approximately 800 rpm no-load for 5 to 10 minutes.

3-60