Replacement Of The Seals In The Swivel - NPK M20S Instruction Manual

SWIVEL MANIFOLD MAINTENANCE

REPLACEMENT OF THE SEALS IN THE SWIVEL

Tools needed:
19 and 22 mm open end wrenches
41 and 46 mm open end wrenches
External snap ring pliers
The jaws of the material processor should be closed and the frame supported or the
shipping pins (t80), as shown in Fig. 4, installed to prevent rotation during repair.
STEP 1 (Fig. 5)
Disconnect the rotation hoses (m39) at the counterbalance valve (BO). Remove the
rotation motor hoses and motor fittings (f1) from the hydraulic motor. Disconnect the
cylinder hoses (AO) at the side plates of the top bracket. Do not remove the cylinder
hoses and fittings from the "Spindle Case" (BZ). They will be used to help lift it off the
"Spindle" (CA). Do not disturb the elbow fittings (f4) in the "Spindle Case".
Fig. 4
Fig. 5
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