Figure 10. Checking Control Spool Rotation

TM 10-3930-644-14&P

Figure 10. Checking Control Spool Rotation

Figure 12. Removing Cap Locator Bushing

hole toward lowest corner, remove check valve

for scoring and other damage. Slightly scored

seat. ball, and spring.

parts can be cleaned up by hand rubbing with

600-grit abrasive paper.

Smooth burnished

17. Holding the spool assembly, push the cross pin

areas are normal in many areas. DO NOT

to loosen it from the spool-sleeve assembly

attempt to clean up these areas, nor mistake

(Fig. 15). Remove the cross pin and set it aside.

them for excessive wear.

18. Push inside lower edge of spool so the spool

3. Replace any parts found to be defective or badly

moves toward the splined end, and remove

worn. All seals must be replaced with new parts

spool carefully from .the sleeve (Fig. 16).

when unit is reassembled.

19. Push the centering spring set out of the spool

4. Place a piece of 500-grit abrasive paper face up

(Fig. 17).

on a piece of plate glass or similar smooth, flat

surface.

C. CLEANING AND INSPECTION

5. Clean the ends of the meter section star gear by

1. Carefully rinse each part with suitable solvent

stroking it across the abrasive. This will also

and allow parts to air dry. Parts should be set to

remove any sharp grit which could scratch other

dry on clean paper towels.

meter section components.

2. Inspect the surfaces of all moving parts

6. Lightly clean up both sides of the ring gear, both

sides of the plate, the 14-

Figure 11. Removing End Cap

Figure 13. Removing Check Valve Seal Plug

3-165