| Tweet |
Custom Search
|
|
|
||
 TM 55-1905-223-24-3
REPAIR
a.
Check the shutoff valve assembly (Figure 3-17).
(1)
Check the coil assembly with an ohmmeter. Replace the shutoff valve assembly if the resistance
reading is not between 28 and 32 ohms.
(2)
Operate the manual control knob (1, Figure 3-17) and check for proper operation. With the control
knob rotated fully counterclockwise, the fuel passage through the valve should be closed (with no
electricity being applied to the coil). With the knob rotated fully clockwise, the fuel passage should be
open.
(3)
Visually check for dirt, corrosion, or. damage. Replace the shutoff valve assemblyif any damage is
found.
(4)
Replace the shutoff valve assembly (Figure 3-17) as required.
b.
Inspect the fluid pressure dampener (Figure 3-18).
(1)
Visually check the body and plate for signs of damage.
(2)
Replace the fluid pressure dampener if damaged.
c.
Inspect the fuel pump gear (Figure 3-19).
(1)
Visually inspect the shafts and spur gears (2). Replace the pump gear assembly if excessive wear, or
burrs, cracks, or broken gear teeth are found.
(2)
Check the installed depth of the regulating fluid pressure valve (1) in the cover (5) face. The valve
must be even to 0.015 inch (0.38 mm) below the cover face. Seat the pressure valve as required.
d.
Inspect the fluid filter element assembly (8, Figure 3-20).
NOTE
The filter element contains a magnet to hold any steel particles that may have entered the fuel pump.
(1)
Clean the metal parts of the fluid filter element (8) in solvent.
(2)
After cleaning, visually inspect for metal particles in the mesh. Replace screen as necessary.
(3)
Clean the machine thread plug(s) (5) and helical compression spring (7) in fuel oil and inspect for
signs of damage. Replace parts as necessary.
e.
Check the governor actuator (2, Figure 3-20):
3-47
|
||
|
||
