TM 9-2350-256-34-1(b) Start the auxiliary engine and allow ahydraulic load on the auxiliary pump of 2000 ± 50three-minute warmup period with no load on thepsi. If necessary, adjust the system selector valvegenerator or pump. Then check the engine speedrelief valve with the adjusting screw (view A, fig. 2-with a hand tachometer or stroboscope. Adjust to29) to obtain a pressure reading of 2000 ± 50 psi.2000 ± 100 rpm, if necessary, in the followingCheck engine rpm for 2000 ± 100 rpm. If engine rpmmanner.is below 2000 ± 100, troubleshoot.1 Locate the governor speed adjustmentscrew on the front of theengine (3, fig. 4-1).2 Loosen locknut and turn screw slowlyuntil tachometer or stroboscope reads 2000 ± 100rpm.(f) Continue to operate the auxiliary enginefor 10 minutes with a 2000 ± 50 psi load on thea u x i l i a r y h y d r a u l i c p u m p a n d n o l o a d o n t h egenerator.3 Carefully tighten locknut so that thetachometer or stroboscope reading does not change.(c) Stop engine, check crankcase oil and fillto proper level (TM 9-2350-256-10) if required.(d) Install a pressure gage in the gage portof the system selector valve relief valve, place themanual shutoff valve in NORMAL OPERATIONposition and place the system selector valve inAUXILIARY position.(g) Check all points for leakage (TM 9-2350-256-20) and correct any other defects. Return systemselector valve to MAIN position and shut off engine.( h ) C a l i b r a t e t h e c u r r e n t l i m i t e r a s p e rparagraph 3-47. With the load applied as stated instep (i) of paragraph 3-47f(3), verify that the enginespeed remains within 2000 ± 100 rpm. If not,readjust the governor speed control. If the enginecannot maintain 2000 ± 100 rpm under generatorload, troubleshoot.(e) Check the pressure gage to confirm aS e c t i o n I I . D e l e t e dS e c t i o n I I I . D e l e t e dChange 84-21 (4-22 Thru 4-28 Deleted)
Integrated Publishing, Inc. - A (SDVOSB) Service Disabled Veteran Owned Small Business
