Pump adapters are available for the
following makes of commercial test
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
support the shaft in the housing and must be
tested using an intermediate support bearing.
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
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
This pump's rotation direction is
clockwise as viewed from drive end
(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
(4) Operate the pump at full load rated speed of
2200 rpm for several minutes.
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
of end plate and transfer pump parts.
Figure 7-30. Bench test mounting.