CLEANING AND INSPECTION - TM-10-3930-607-150223

UPRIGHTS

2. Check the packing for rounded, worn, scratched

or torn lips. When installed in the primary bushing

retainer, the packing should extend beyond the retainer.

The secondary packing should extend beyond the

piston. Replace packing if deteriorated, mutilated or if it

does not extend beyond its respective retainer or piston.

3. Check the rods for nicks, burrs, scratches and

rust.

Slight defects may be removed with fine

sandpaper. However, do not sand chrome plating off

Figure 33.

the outside of either rod. Chrome plating on the rods

2. Remove the nut from the end of the piston rod.

can be checked by applying copper sulphate to the rod.

The rod will discolor where the chrome is gone and

3. Slide the rear piston half off the rod. Remove

should be replated or replaced.

packing and front piston half. For exploded view of

packing assembly, see Figure 34.

E. ASSEMBLY

Use new O-ring, packing and wiper.

NOTE

Packing should be replaced in sets.

1. Lubricate all parts and inside of cylinder with

hydraulic oil.

2. Press wiper in the wiper bore of threaded

Figure 34.

washer.

4. Remove bushing and retainer from the rod.

3. Push threaded washer on the rod, do not make

Push the bushing from the retainer. Remove the

contact between wiper and rod threads.

packing from the bushing. For exploded view of

bushing and retainer assembly, see Figure 35.

4. Install O-ring on bushing.

NOTE

Do not stretch to facilitate easier

installation. Do not cut or damage

ring on sharp edges. Make sure the

ring is not twisted after installation.

5. Place packing in counterbore of bushing with

lips toward the bottom of the bore.

Figure 35.

6. Place back-up ring and O-ring on the retainer.

D. CLEANING AND INSPECTION

The back-up ring should be toward the larger diameter

of the retainer.

1. Clean all parts in solvent.

7. Hand press the bushing into the retainer

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