CONVERTING THE MSU-1 MOBILE SUPPORT UNIT FROM
MIL-H-5606 TO MIL-H-83282 HYDRAULIC FLUID
E-13. Start unit as shown in TM paras 3-9 and 310.
E-1. To drain pressurized fluid from accumulator open
NOTE Do not use buddy start system during flushing
the hand pump bypass valve as shown in TM 55-1730-
216-14, para 3-4(d), page 38 and allow the accumulator
fluid to return to the reservoir. Close the bypass valve
after fluid has passed to the reservoir.
Perform steps specified in TM para 3-18,
Preparation for Hydraulic Service. Set volume control
E-2. To drain reservoir. open drain valve at bottom.
for 10 gallons per minute and compensator for 1500 psi.
E-3. Drain hydraulic system components as shown in
E-15. Close high pressure bypass valve, open flushing
TM para 2-1(9)(b), page 33.
manifold valve, and operate the stand for five minutes
in the flushing mode.
E-4. Drain high pressure filter, pump case filter, and
start system filter.
E-16. Close flushing manifold valve. Operate stand in
this mode for 30 seconds. Open high pressure bypass
E-5. Reassemble filters, replace all plugs and caps
valve. Operate stand in this mode for one minute.
removed per para E-3, and close reservoir drain valve.
E-17. Prepare stand for propulsion mode as shown in
E-6. Fill reservoir with 10 gallons of MIL-H-83282
TM para 3-30, page 43, do not engage drive pins.
Operate stand with control lever on tongue in full
forward position for two minutes, then in full reverse
position for two minutes.
E-7. Refill high pressure pump case per TM para 2-
1(9)c, NOTE, page 33.
E-18. Return propulsion selector valve to HYDRAULIC
E-8. Place reservoir selector valve in "SERVICE UNIT
E-19. Shut down stand.
E-9. Connect pressure hoses and fill hose and flushing
E-20. Repeat steps E-1 thru E-19 twice.
manifold to test stand ref TM para 3-18, page 41. Open
fill hose shut off valve.
E-21. Drain stand see steps E-1 thru E-5. Refill
reservoir with 15 gallons of MIL-H-83282 hydraulic fluid.
E-10. Use hand pump, to pump the accumulator up to
at least 2000 psi.
E-22. Refill high pressure pump case per step E7.
E-11. Set pump volume control for maximum, depress
E-23. Circulate fluid through stand as shown in steps E-
start handle and hold until oil appears in the sight tube
10 and E-11.
ref TM para 3-7, page 39.
E-12. Pump the accumulator up to at least 2000 psi.