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Page Title: VEHICLE MOVES IN NEUTRAL
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TM 5-4210-233-14&P-1 Table 5-2.  Direct Support Troubleshooting - Continued MALFUNCTION TEST OR INSPECTION CORRECTIVE ACTION TRANSMISSION - Continued 9 VEHICLE MOVES IN NEUTRAL Step 1.  Remove oil pan (see para 6-53).  Manually shift transmission and see if the manual shaft and detent lever are engaging with selector valve and that actuator pin is attached to detent lever. If selector valve does not engage replace defective parts (see para 6-62). If selector valve engages, disassemble transmission and valve body to check for applied clutch packs or leaking or sticking valves in valve body (see para 6-57, 6-58, 6-59, 6-60, 6-61 and 6-62). 10 TRANSMISSION SLIPS IN ALL FORWARD GEARS Step 1.  Check for low main pressure.  Remove line from main pressure port on transmission and install a tee and a 0 to 300 psi (O to 2070 kPa) gauge.  Start engine and allow to run at idle speed.  With parking brake applied, shift transmission into D (drive) check for 90 psi (621 kPa) main system pressure. Step 2   If pressure is less than 90 psi (621 kPa). - Check for low oil level, add oil to proper level. - Oil filter element is clogged, replace oil filter. - Seal ring on oil pickup tube damaged or missing, install new seal ring. - Main pressure regulator valve spring is weak, replace spring. - Control valve body leaking, replace or overhaul valve body assembly. - Valves sticking (trimmer relays and main pressure regulator), overhaul valve body assembly. - Oil pump worn or damaged, replace or overhaul oil pump. - Priority valve is missing, replace valve. Step 3.  If pressure is less than 90 psi (621 kPa). - Forward clutch is defective, overhaul forward clutch. 5-19

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