Installation of Fuel Injection Pump on Test Stand

TM 9-2910-226-34

and fittings to install pump on the test

Table 3-3. Typical Test Stand Accessory Kit

stand.

e. Lubricate the test stand rails with test oil and

place the fuel injection pump and bracket on the

rails.

f. Position the fuel injection pump on the test

stand drive coupling allowing a minimum of 1/16

inch clearance between the hubs. Clamp pump

bracket securely in position.

g. Improvise a manifold composed of a 3/8 in.

d. All fuel injection pump assemblies, including

flare tube to in. 45-degree pipe elbow (G, fig. 3-

fuel density compensator where applicable, shall be

163), in. pipe tee (H), in. pipe to in. flared

tested and adjusted on the fuel metering and

tube adapter (J), and in. pipe to in. flare tube

distributing pump test stand prior to assembly on an

adapter (K) (on all pumps except code G). On code G

engine or returning the pump assembly to stock.

pumps only, install improvised adapter manifold

e. Depot overhauled pump assemblies shall be

into hydraulic head inlet fitting after hydraulic head

tested in accordance with paragraphs 3-51, 3-57, and

port closing test, delivery valve test, and hydraulic

3-58.

head leak test.

f. Repaired pump assemblies shall be tested in

3-52. Preparation for Hydraulic Head Tests.

accordance with paragraphs 3-51 through 3-58.

a. Disconnect density compensator overflow line at

g. Pump assemblies removed from engines shall

pump overflow valve.

be tested in accordance with paragraphs 3-51, 3-57,

b. Remove overflow valve and plug openings with

and 3-58 to determine if pump repair is necessary. If

in. and 1/8 in. pipe plugs.

repair is necessary, follow procedures in f above.

c. Remove density compensator to hydraulic head

fuel line.

3-51. Installation of Fuel Injection Pump on Test

d. Position the nozzle tester on the right corner of

Stand. a. Remove the fuel injection pump drive gear

the test stand (fig. 3-164).

and hub (if on pump to be tested).

KEY to fig. 3-163

b. Install adapter ring, Part No. 11020376, on the

fuel injection pump. Torque tighten the three

Test stand fuel pressure to supply pump inlet hose

mounting bolts to 27-35 foot-pounds.

Supply pump outlet to compensator inlet hose

c. Install fuel injection pump and adapter ring on

Compensator inlet tee to pressure gage hose

Overflow valve to test stand fuel return hose

the test stand adapter bracket, Part No. 11020392.

Test stand lube pressure to fuel injection pump hose

Torque tighten the four mounting bolts to 27-35

Fuel injection pump lube return to test stand lube

foot-pounds.

return hose

d. Lubricate the adapter ring oil seal and install

Elbow, 45-degree, 3/8 inch flare tube to 1/4 inch

pipe

the test stand pump hub, Part No. 11020384, and

Tee, 1/4 inch pipe

Woodruff key on the injection pump shaft and secure

Adapter, 1/4 inch pipe to 1 /2 inch flare tube

with retaining nut and lockwasher. Torque tighten

Adapter, 1/4 inch pipe to 1/4 inch flare tube

nut to 65-70 foot-pounds.

NOTE

Do not remove any elbows or fittings from

the pump. Fabricate necessary connections

3-94