ARMY TM 9-6115-464-34
AIR FORCE TO 35C2-3-446-2
NAVY NAVFAC P-8-624-34
(10)
(11)
(12)
(13)
(14)
(15)
Examine the junction points of the metering valve pin hole in the linkage hook, throttle lever, shutoff
cam, and shutoff lever for looseness and burrs.
Check the metering valve body for wear. Ascertain that the metering valve arm is well seated and
there is no radial movement of the arm on the valve. Check the metering valve arm pin for wear or
looseness.
Carefully inspect the bore and edges of all flat surfaces of the cam. If evidence of spatting or flaking
out exists, replace the cam.
NOTE
Since only the working portions of the cam lobes on the bore are ground, the tool
marks between lobes should not be considered as damage. The cam finish is mottled
from heat treatment rather than operation.
Visually inspect the drive shaft for undue wear or cracking. Check the diameter where the thrust
sleeve slides for scores. Check for smoothness of seal grooves. They must be absolutely smooth.
Check the regulating piston for freedom of movement in the end plate sleeve. Check all threads for
damage. The filter element should bear no evidence of damage. Clean all dirt or rust from the
element.
CAUTION
Check for tightness of the orifice plate. Replace adjusting plug if plate is loose. Failure
to observe this caution could result in equipment damage.
Check that the damper piston (87) moves freely in the damper barrel (88). Inspect for chipping of
piston or scratches to the piston and damper barrel bore. The bleed orifice should allow free flow
when the piston is inserted. Replace components as necessary.
e. Assemblv.
NOTE
All parts should be flushed in clean oil as they are assembled. Replace all seals and
gaskets.
CAUTION
Install piston seal dry. Do not use grease.
Failure to observe this caution could result
in equipment damage.
(1) Insert regulating piston seal (62) into the lower end of the regulating sleeve assembly (55) far
enough to expose retaining ring groove. Install retaining ring (59).
(2) Install regulating piston (61) and spring (60) into the sleeve making sure that the piston slides to the
bottom of the sleeve bore without binding.
(3) Install end plate adjusting plug (54) into the sleeve until all threads are just below port “A”.
CAUTION
Do not exceed this position as excessive transfer pump pressure could occur. Failure
to observe this caution could result in equipment damage.
(4) Insert regulating sleeve assembly into the bore in end plate (66).
(5) Fit the transfer pump thrust plate (67) on the end plate (66).
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