TM 5-3805-291-23-1
HYDRAULIC SYSTEM TESTS, INSPECTIONS, AND ADJUSTMENTS - CONTINUED
0017 00
MAIN CONTROL VALVE (MSD) CALIBRATION - CONTINUED
Manual Calibration Procedure - Continued
12.
Stop engine (TM 5-3805-291-10).
13.
Disconnect MSD from diagnostic connector (WP 0005 00).
Effects of Poor Adjustment
1.
Effects of Poor Adjustment of Minimum Modulation Current.
a.
Current is Adjusted Too Low.
(1)
Deadband in lever is too great when lever is moved from center position.
(2)
Implements may be sluggish. However, sluggish implements may also be caused by contamination in
hydraulic system.
b.
Current is Adjusted Too High.
Implements may be jerky. Implements may not modulate smoothly.
2.
Effects of Poor Adjustment of Maximum Modulation Current.
a.
Current is Adjusted Too Low.
Implement hydraulics will be slower. Maximum cylinder speed will be reduced.
b.
Current is Adjusted Too High.
(1)
Full hydraulic speed will be achieved before lever reaches detent position. This results in deterioration of
implement modulation.
(2)
When lift arms are lowered, float feature may activate prematurely before detent is reached.
0017 00-38
