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Figure 7-29. Armature and spring tension adjustment.
Figure 7-32. Test stand operation.

TM-5-4310-354-14 Compressor Rotary; Air Skid Mounted; Diesel Engine 125 CFM 100 PSIG (Davey Model 6M125) Manual
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TM 5-4310-354-14
NOTE
Pump adapters are available for the
following makes of commercial test
benches:
American  Bosch,  TSE
7664, TSE 4500, TSE 4600; Unitest, U-
4500, U-4600; Bacharach, GP-500C,
SP-600; Hartridge, J,L.NU.
(1) Mount the pump securely on test bench using
the  appropriate  adapter  for  bench  being
employed.  Pumps having bronze pilot tubes
must  have  shaft  supplied  with  the  pump
removed and the pump mounted on the stand
using shaft provided by test stand manufacturer.
(No support bearing is required.) Refer to figure
7-30.  Pumps having steel pilot tubes do not
support the shaft in the housing and must be
TS 5-4310-354-14/7-31
tested using an intermediate support bearing.
(See  figure  7-30.)  Check  the  intermediate
Figure 7-31. Fuel line connections, test setup.
coupling  disc  for  freedom  of  movement.
Connect supply and return lines securely. (See
(2) Install high pressure injection lines using new
figure 7-31.)
copper gaskets.  Leave the fuel line connector
screws at the pump and the injection line nuts
and nozzles loose until air is bled from pump
and lines.
NOTE
This pump's rotation direction is
clockwise as viewed from drive end
of pump.
(3) Start the stand at lowest speed.  Move pump
throttle to "full load" position.  When transfer
pump picks up suction, allow fuel to bleed for
several seconds from the loose connector
screws and from injection line nuts; then, tighten
connector  screws  and  injection  line  nuts
securely.
(4) Operate the pump at full load rated speed of
2200  rpm  for  several  minutes.
Dry  off
completely with solvent and compressed air.
Observe for leaks and correct as necessary.
(5) Close valve in supply line. Transfer pump must
pull minimum of 15 inches Hg.  If it does not,
check for air leaks on suction side or malfunction
TS 5-4310-354-14/7-30
of end plate and transfer pump parts.
Figure 7-30. Bench test mounting.
7-31






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