12-34 Bleeding
WARNING
Keep limbs clear of flight controls when operating test pump.
Hydraulic forces can cause injury.
1. Remove F902-1 (pressure) line assembly T-fitting cap. Connect MT384 (or equivalent)
0.8-1.2 gpm hydraulic test pump pressure line to T-fitting. (Pressure and suction fittings
are different sizes to ensure correct connection.)
2. Remove filler-vent plug and cover hydraulic reservoir hole with finger to prevent fluid
loss (until suction line is connected). Remove F902-2 (suction) line assembly T-fitting
cap. Connect test pump suction line to T-fitting. Service reservoir with new A257-15
fluid, as required.
3. Activate test pump and inspect hydraulic system for leaks.
4. Simultaneously fully raise collective and move cyclic fully forward then simultaneously
fully lower collective and move cyclic fully aft. Repeat procedure ten times.
5. Simultaneously fully raise collective and move cyclic fully aft then simultaneously fully
lower collective and move cyclic fully forward. Repeat procedure ten times.
6. Turn off test pump and verify no leaks in hydraulic system.
7. Cover reservoir hole with finger (until suction line T-fitting is capped). Disconnect test
pump suction line from suction line T-fitting and install cap.
8. Disconnect test pump pressure line from pressure line T-fitting and install cap. Special
torque caps per Section 20-33 and torque stripe per Figure 5-1.
9. Service hydraulic reservoir per Section 12-31.
Page 12.12 Chapter 12 Servicing R66 Maintenance Manual SEP 2012
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