TB-9-2320-335-13&P HMMWV Operator and Field Maintenance, Parts, Tools M1151A1 M1152A1 M1165A1 Download
Page 71 of 680
TB 9-2320-335-13&P 1. With engine off, disconnect pressure hose from hydro-boost and connect tube and quick-disconnect to hydro-boost. NOTE Have drainage container ready to catch fluid. 2. Connect adapter and quick-disconnect to pressure hose. 3. Connect hose from valve on power steering analyzer to tube and quick-disconnect on hydro-boost. 4. Connect hose from gauge side of power steering analyzer to adapter and quick-disconnect on pressure hose. 5. Connect STE/ICE-R to vehicle diagnostic connector and set for measuring RPM (refer to TM 9-2320-387-24-1). 6. Open analyzer valve to full open position. 7. Start engine (refer to TM 9-2320-387-10). 8. Remove power steering reservoir cap and turn steering wheel all the way left, hold in place for 3 seconds, then repeat process with steering wheel all the way right. This releases air from the system. 9. Return steering wheel to center position and shut engine off (refer to TM 9-2320-387-24-1). 10. Check and add power steering fluid to reach FULL COLD level in reservoir (refer to TM 9-2320-387-10). 11. Start engine (Refer to TM 9-2320-387-10) and allow engine to idle and reach operating temperature of 190° F to 230° F. 12. Check for proper engine idle speeds and adjust if necessary (refer to TM 9-2320-387-24-1). 6.5L engine 700±25 RPM 13. Ensure analyzer valve is in full open position and engine is at proper idle speed. 14. Initial pressure should be 250–400 psi and a flow of 4.00 gpm. If these specifications aren't present, check installation of analyzer and check power steering system (Refer to TM 9-2320-387-10). 15. With power steering system working properly, partially close analyzer valve until pressure reaches 700 psi. If flow rate varies more than 1 gpm from the initial reading, replace power steering pump (TM 9-2320-387-24-1). CAUTION Do not leave analyzer valve fully closed for more than 3 seconds. Severe damage may occur to power steering pump. 16. With engine at idle, close and open analyzer valve three times, recording pressure each time. All readings should be 1600 psi or higher, if pressure is lower, replace power steering pump (TM 9-2320-387-24-1). 17. With analyzer valve in the open position, increase engine rpm to 1500 and record fluid flow. If fluid flow varies more than 1 gpm from initial reading, replace power steering pump (TM 9-2320-387-24-1). 2-49 Check hydraulic hoses, power steering pump, power steering cooler, hydro-booster unit, and steering gear. See hose replacement procedures (refer to para. 8-24.2). Check power steering cooler for bent fins or any other airflow restrictions. Straighten fins or replace power steering cooler (refer to para. 3-8.1) if damaged beyond repair. HOSE (GAUGE SIDE) HOSE (VALVE SIDE) GAUGE POWER STEERING ANALYZER ADAPTER/QUICK- DISCONNECT PRESSURE HOSE TUBE/QUICK- DISCONNECT HYDRO- BOOST VALVE REFERENCE INFORMATION STEERING SYSTEM