Section XIII. REBUILD OF FUEL FILTER ASSEMBLY, FUEL FILTER HOSES, FUEL INJECTION TUBES, FUEL INJECTION PUMP ATTACHING PARTS, AND FUEL INJECTOR NOZZLE AND HOLDER ASSEMBLIES

a. Cleaning and Inspection.

c . Repair. Repair the housing (B-2) as di-

rected in paragraph 154 b. Refer to figures 315

(1) Cleaning. Clean the oil cooler (D) and oil

and 316 for replacement of the helical coil in-

cooler cover (F) as directed in para-

serts (B- 1). Replace the bypass valve plungers

graph 152 c.

(M and W), housing (B-2), and valve plunger

springs (Q and U) when they do not meet require-

ments specified in repair and rebuild standards

(2) Inspection. Inspect the oil cooler cover

(par. 296). Repair studs (B- 3 and B-5) as di-

d i r e c t e d in paragraph 153 b . In-

rected in paragraph 154 d. Replace the bypass

spect oil cooler (D) for cracks and dam-

aged gasket surfaces. Pressure check

valve plungers and housing when scratched or

oil cooler by sealing openings and pump-

any evidence of a wear pattern exists. Replace

ing engine oil (OE-10) into cooler at

the valve plunger springs when cracked or in a

150 psi static pressure. Cooler must not

set condition.

leak at 150 psi. Release pressure, drain

oil, and flush with dry- cleaning solvent

d. Assembly. Refer to figure 403 and reverse

or mineral spirits paint thinner. Blow

the sequence of instructions to assemble the oil

dry with compressed air.

cooler and oil filter housing and related parts.

b . Repair. Repair the oil cooler cover (F)

212. OIL COOLER

as directed in paragraph 154 b . Repair minor

damage to gasket surfaces of oil cooler (D)

Note. The key letters shown below in paren-

with a crocus cloth. Replace oil cooler when

these refer to figure 402 except where other-

cracked, damaged, or when it does not pass

pressure test.

wise indicated.

Section XIII. REBUILD OF FUEL FILTER ASSEMBLY, FUEL FILTER HOSES,

FUEL INJECTION TUBES, FUEL INJECTION PUMP ATTACHING PARTS,

AND FUEL INJECTOR NOZZLE AND HOLDER ASSEMBLIES

from fuel filter head. (D) Remove 3/8-

213. FUEL FILTER ASSEMBLY

inch pipe plug from filter head. (E) Re-

move two vent valves from filter head.

Note. The key letters shown below in paren-

these refer to figure 404 except where other-

(3) Figure 406. (A) Remove relief valve

wise indicated.

cap. (B) Remove plunger spring. (C)

Remove valve plunger. (D) Remove pre-

a. Disassembly. Disassemble the fuel filter

formed packing from valve cap and

assembly as follows.

discard packing.

(1) The primary and final fuel filter cases

b. Cleaning and Inspection.

(M), elements (T), case nuts (G), case

nut flat washers (H), preformed pack-

(1) Cleaning. Clean fuel filter case (M),

ings (J), and case gaskets (U) were re-

fuel filter head (B), vent valves (K), and

moved from the fuel filter head (B)

relief valve parts as directed in para-

during engine disassembly (par. 117).

graphs 152 b and d.

Remove pin (L) from stud in fuel filter

case. Remove spring seat (S), spring

(2) Inspection. Inspect fuel filter case (M),

seat packing (R), washer (Q), and ele-

fuel filter head (B).. vent valves (K), and

ment spring (P) from case. Remove

relief valve parts as directed in para-

drain cock (N) from case.

graph 153 b.

(2) Figure 405. (A) Remove two 3/8 tube x

c. Repair. Remove minor burs and nicks

3/8 pipe, 90 degree elbows from inlet

using a fine mill file. Repair minor thread

and outlet openings in filter head. (B)

damage using a pipe tap. Replace cracked or

Remove 3/8 tube x 1/4-inch pipe, 90

damaged elbows, pipe reducers, and the com-

degree elbow from tee in fuel inlet

plete fuel filter assembly when minor repairs

opening. (C) Remove 1/4- inch pipe tee

fail to return filter to serviceable condition.

252