Engine Run-in - TM-9-2815-200-350545

(4) Remove pipe plug from secondary fuel

(para 8-4) and cannot be found through visual

filter or pipe plug from fuel/ water separator

i n s p e c t i o n . Perform test as directed in b through

(fig. 8-1).

d, below.

(5) Remove pipe plug (B, fig. 6-6) and

b. Remove Cooling Fan Vanes and Cooling

attach piston oil sprayer pressure gage or con-

F a n s . Remove cooling fan vanes and cooling

nection.

fans (figs. 4-34 and 4-35).

( 6 ) Install oil fitting in oil pan.

c . Install Sleeve Spacers. Install two fan rotor

h u b sleeve spacers - 4910-795-7952 (fig. 4-87).

( 7 ) Remove main oil gallery pipe plug (fig.

8-1) and install main oil gallery thermocouple.

d. Test for oil and Fuel Leakage.

(8) Install main oil gallery pressure con-

( 1 ) Start engine and check for oil and fuel

n e c t o r or attach to oil pressure sending unit (fig.

l e a k s at hoses, tubes, and all connections inside

8-1).

engine "V" and around engine. Tighten hose

(9) Attach oil inlet and outlet lines to

connections or replace leaking hoses, elbows, tee,

and nipples as necessary to correct oil or fuel

crankshaft damper housing if external oil cir-

leaks.

culating system is to be used. If engine is not to

be run on a circulating oil system, lubricate

N o t e . Slide fuel injection tube, dust caps (C,

e n g i n e by forcing engine oil under pressure into

fig. 4-87) away from tube connections at fuel

the lubrication system to assure adequate

injection pump to check for fuel leaks.

lubrication of engine parts until the engine oil

Note. DO NOT run engine above idle

pump has time to circulate oil. Fill engine oil pan

speed, and DO NOT apply load to engine.

with proper grade oil to fill mark on oil level

gage.

(2) Refer to troubleshooting (paras 3-1

(10) Attach fuel inlet line to primary fuel

through

causes

and

probable

3-11)

for

filter (fig. 8-1).

corrections for other possible leakage points

(11) Attach fuel return line, flywheel end

around engine.

(fig. 8-2).

( 3 ) When all points for oil and fuel leaks

(12) Attach turbosupercharger induction air

h a v e been inspected and / or corrected, remove

inlet (fig. 8-1) and exhaust outlet tubes (fig. 8-2).

fan rotor hub sleeve spacers - 4910-795-7952

Connect same type air cleaners that are used

(fig. 4-87).

with engine installed in vehicle. (Refer to ap-

e. Install Cooling Fans. Install engine cooling

plicable Vehicle Technical Manual.) Air intake

fans (fig. 4-35).

should be located so that only cool, fresh air will

f. Check Cooling Fan Blade Clearance.

be inducated into engine. A means must be

C h e c k fan blade clearance following instructions

provided for conducting exhaust gases and

accompanying figure 4-88.

cooling air from engine to avoid recirculation

g . Install Cooling Fan Vanes. Install cooling

through engine cooling fans.

fan vanes (fig. 4-34).

( 1 3 ) Install thermocouple in intake manifold

8-4.

Engine Run-in

elbow, both banks (fig. 8-1).

a. General. This paragraph describes run-in

(14) Install manifold pressure gages or

s c h e d u l e s for overhauled engines prior to being

c o n n e c t i o n s in intake manifold elbows (fig. 8-1),

p l a c e d in service. Engine run-in is performed af-

both banks, set manometers to current wet

ter overhaul to assist in breaking-in new parts, to

barometer reading.

detect faulty assembly. to check for oil leaks, and

(15) Attach fuel shutoff connection, damper

to determine whether an engine will operate

end, and ascertain to be operative (fig. 8-1).

s a t i s f a c t o r i l y when installed in vehicle.

( 1 6 ) Turn on oil circulating pump and fuel

b. Preparation for Run-in.

supply purge pump.

(1) Couple engine to suitable load. The load

( a ) When fuel flows from secondary fuel

m a y be a water brake or electric dynamometer.

filter or fuel / water separator pipe plug hole, air

( 2 ) Remove engine right and left rear upper

h a s been removed from fuel system. Attach fuel

covers (figs. 4-127 and 4-141). Remove pipe

pressure gage or connection at pipe plug hole.

p l u g s from each bank and attach thermocouples

(b) Oil circulation is checked by loosening

to exhaust manifolds. Reinstall upper covers.

the externally-relieved body bolt (fig. 8-1) on No.

( 3 ) Attach C0 2 fire extinguisher (fig. 8-1).

8-3