TM 5-2350-262-20-3
SPRUNG/UNSPRUNG CONTROL VALVE LINKAGE CHECK
Hold measuring device (1) on face of SPRUNG/UNSPRUNG control valve (2). Have
assistant move SPRUNG/UNSPRUNG lever between SPRUNG and UNSPRUNG modes.
Measure distance plunger (3) travels as lever is moved. Distance of travel should be 9/32 in.
(7 mm).
SPRUNG/UNSPRUNG CONTROL VALVE OPERATION TEST
NOTE
Have suitable container ready to catch oil.
Disconnect UNSPR VLV-11 TEE hose (1) from tee (2) at port 11 of SPRUNG/
UNSPRUNG control valve (3).
Install tee (4) and pressure measuring device (5) between UNSPR VLV-11 TEE hose (1)
and tee (2) at port 11.
Start engine and have assistant move SPRUNG/UNSPRUNG lever between SPRUNG
and UNSPRUNG several times. Hydraulic pressure should be less than 25 psi (172 kPa)
in SPRUNG mode and greater than 2,500 psi (17,238 kPa) in UNSPRUNG mode.
Stop engine; relieve hydraulic pressure. Remove all test equipment and connect hose.
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