I1 pump (# 20 of 24 item check Eng.Low (no load) mA . Eng. Low (arm relief) mA. Eng.High (no load) mA. Eng. High (arm relief) mA.

8. Start engir ,~edfy the engine RPM’s are within spec : anges. 9. Perform the ;: 7~-}ary pressure tests and adjustments in the ~der they are listed below. a. Main Pilot Relief Pressure.

b. Travel Main Relief Pressures. c. Attachment Main Relief Pressures in

"HEAVY LIFT" ON.

d. Attachment Main Relief Pressures in normal mode with "HEAVY LIFT" OFF. e, Swing Port Relief Pressures

10.Perform the following OPTIONAL Pressure

Tests as required. (Not necessarily as listed).

a. Attachment Cylinder Port Relief

Pressures. b. Low Pressure Relief Valve Pressures. c, Negative Control Pressures. d. Power Shift (Pf) Pressures

D. Main and Port Relief Pressures Measurement and Adjustment Notes

1. If pressure gauge readings are within specifications for the particular machine being tested, it is not necessary to adjust Relief Valve Pressures. 2. During adjustment of the two stage attachment main relief valves for P1 and P2 pumps, perform measurement and adjustment of the boost (heavy lift) stage of the main relief valves first. Then, complete the normal main attachment relief pressure measurement and adjustment. See Figures 2.15A & 2.18A for "Heavy Lift" and "Normal" adjustment screws and Iocknut~ 3. Measurement and adjustment of attachment cylinder port relief valves are not necessary during normal pressure measurement’procedures. If measurement and adjustment of an attachment port relief valve is required, it may be necessary to increase the opening pressures of the attachment main relief valves and possibly the travel main relief valves. Mark them accordingly for ease of readjustment. 4. Install proper size pressure gauges at correct locations, 5. Confirm that engine rpm’s are within specifications. 6.Confirm that engine coolant and hydraulic oil are at normal operating temperatures. 7. Perform all testing and adjustment procedures observing all applicable safety requirements. 8. Performance Inspection Standard Charts are on Pages 2-15 through 2-22 and are organized by Model Number. Page 5-2 9. Record all Gauge readings and compare to that particular machine’s c~hart BEFORE making any adjustments. 10. All Pressure Tests are conducted with machine in "H" Mode and engine in "HI-IDLE," unless otherwise specified in test procedure.

NOTE

When adjusting, pressures are increased and decreased as follows: CLOCKWISE ROTATION-Increase

COUNTERCLOCKWISE ROTATION- Decrease

E. VERIFYING ENGINE RPM- SK150 - SK460

1. Start Engine.

2. Depress the Buzzer Stop Switch 5 Times. This will change the Gauge Cluster Display from Clock to Engine RPM. See Figure A.

BUZZER STOP SWITCH

FIGURE A

NOTE

The Warning Buzzer sounds while the Engine’s RPM is being displayed to avoid the RPM display being left on during normal machine operation and affect the other system displays and warnings.

3. To retum Gauge Cluster Display back to normal, depress the buzzer stop switch one time.

NOTE

The Engine RPM Display can be brought back at any time by depressing the Buzzer Stop Switch one time. If the power is turned "OFF", it will be necessary to repeat steps I and 2 to get the Engine RPM on the display.

4. Should the Engine RPM display show"0" while the engine is running, check and correct the following areas: a. RPM Sensor Adjustment b. RPM Sensor Resistance Value c. Electrical Harness and Connections

F. VERIFYING ENGINE RPM-SK100 ~ SK130

Install an external Tachometer to engine in order to verify engine RPM.

S/Orem-05-99