TM 5-3895-379-23-1
0209
HYDRAULIC SERVO NEUTRAL (MECHANICAL CENTER) ADJUSTMENT - Continued
4.
Move propel control lever to LOW SPEED range (TM 5-3895-379-10).
5.
Start and run the engine at 1,500 rpm (TM 5-3895-379-10).
NOTE
Pressure gauge readings should be the same.
6.
If readings are not the same, adjust neutral position (mechanical center) of the piston (Figure 10, Item 3) as
follows:
2
3
4
3
2
1
5
M1196SWR
Figure 10. Valve Tests and Adjustments.
a.
Loosen locknut (Figure 11, Item 2) on piston rod adjustment screw (Figure 11, Item 1).
b.
Turn piston rod adjustment screw (Figure 11, Item 1) clockwise or counterclockwise depending on spool
movement requirement.
c.
Adjust piston rod adjustment screw (Figure 11, Item 1) until pressure readings are same.
7.
Stop engine (TM 5-3895-379-10).
8.
Remove two 9,000 psi (60,000 kPa) gauges and install two 600 psi (4,000 kPa) gauges on ports
(Figure 8, Item 2).
9.
Repeat Steps (5) through (7).
10.
Tighten locknut (Figure 11, Item 2).
1
2
M0384SWR
Figure 11. Valve Tests and Adjustments.
03/15/2011Rel(1.8)root(maintwp)wpno(M00147)