Illustration 49

TM 9-2320-312-24-2

Truck Engine

Disassembly and Assembly Section

6. Secure the wiring harness to the unit injector

hydraulic pump with a nylon strap. Connect

electrical plugs (3) and (4).

Note: Use the following steps in order to convert the

engine from the 151-0858 Tube to the 175-3236

Hose Assembly.

7. Remove the connectors for the 151-0858 Tube

that are located in the unit injector hydraulic

pump and the cylinder head.

8. Position the 153-4906 O-Ring Seal on the

threaded end of each 179-7002 Adapter. Install

the adapters in the unit injector hydraulic pump

and the cylinder head.

Note: When you replace the 151-0858 Tube with

175-3236 Hose Assembly the fuel supply line

must be replaced in order to provide the necessary

clearance.

g00706976

Illustration 49

Note: The following steps are for engines that are

equipped with the 175-3236 Hose Assembly.

3. Position unit injector hydraulic pump (8) on the

timing gear housing. Install three bolts (10) and

tighten three bolts (10) to a torque of 28 7 Nm

(20 5 lb ft).

Note: If the engine is equipped with a 175-3236

Hose Assembly then go to Step 9. If the engine

is equipped with a 151-0858 Tube then proceed

with Step 4. If you are converting the engine from

151-0858 Tube to 175-3236 Hose Assembly then

go to Step 7.

g00706904

Illustration 51

9. Install return line (6) and fitting (5).

10. Reconnect electrical plug (4).

NOTICE

If the hose is not correctly connected the hose will

come loose when the engine is started and the en-

gine oil will come out of the hose. Engine damage can

g00616113

Illustration 50

result.

4. Install return line (6) and fitting (5).

5. Install tube (1) and fuel line (2).