TM 55-4920-384-13&P
6. The pump is now ready to reassemble. Crank the engine
CLEANING OF FUEL PUMP
over to a position where the diaphragm (14) is laying
The industrial engine is used under so many adverse con-
flat across the casting face (23). Place the fuel head
ditions that many times a pump will fail because of the dirt
(7) back in position so the indicating marks of Step No.
in the fuel head. This can recleaned by this procedure.
1 are in line and start the six assembly screws approx-
imately three turns. Again crank the engine over to a
1. With file make an indicating mark across a point of the
position where the diaphragm (14) is pulled down into
union of castings (7 and 23). This is a positive loca-
(23) the mounting bracket. Now tighten the six screws
tion of the fuel line positions when reassembling.
(6) securely.
2. Remove the two fuel lines.
7. Carefully clean and replace the fitter screen (5).
3. Remove six assembly screws (6) and remove fuel head.
8. Replace the dome gasket (4) into the dome (3) and put
4. Bolt (l) is taken out, and the dome (3), dome gasket (4)
this unit into position on the fuel head (7).
and filter screen (5) disassembled.
9. Replace the gasket (2) on the dome bolt (1) and insert
5. The preceding steps reveal the sediment cavities of
in the hole in the dome (3) then tighten securely.
the head which are filled with dirt. Wash this out with
10. Replace fuel lines and tighten securely. Your pump is
gasoline and a fine brush, being careful not to damage
now in condition to give many long hours of additional
the valve assemblies, in the lower cavity of the fuel
service.
head (7).
NOTE: The LQ-30 or LQ-30-A Repair Kit and the parts included there-in, which are identified
by an asterisk (*), are the only parts of the fuel pump available for service.
Ref.
No.
1
*2
3
*4
5
6
7
*8
*9
10
*11
12
13
*14
* 15
*16
*17
18
*19
*20
* 21
* 22
23
Order parts from nearest SERVICE STATION shown in directory following parts list.
IMPORTANT:Always give Model, Specification and Serial Numbers as shown on name plate.
D-70