TM 5-3895-346-14
HYDROSTATIC SYSTEM
TRANSMISSION STARTUP
Repeat or continue to cycle for approximately 5 minutes.
14. Should the charge pressure fall below 100 psi above motor case pressure, discontinue startup until trouble
has been found. (Refer to Troubleshooting.)
15. Run the prime mover at maximum RPM with the pump in neutral. Observe the reading at the vacuum
gage connected to the charge pump inlet. This reading should not exceed 10-inches of mercury at normal
operating conditions.
16. Shut down prime mover, remove all gages and replace all plugs or lines. Check reservoir fluid level and
tighten oil fill cap. The machine is now ready for operation.
NOTE
On those pumps equipped with a 4-cubic-inches/rev. charge pump, the charge pressure should be:
A. 210-240 psi above pump case pressure - pump in neutral at 1000 rpm
B. 300-385 psi above pump case pressure - pump in neutral at 1500-1800 rpm
C. 230-250 psi above motor case pressure - pump in stroke at 1500-1800 rpm
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