ARIMITSU 5 Series Informazioni sull'installazione e sull'avvio - Pagina 2

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SERVICING THE FLUID END

Seal Service follow steps 1 – 3, & 7 - 19

1. Loosen (do not remove) outer bolts (6mm) of Manifold

Assembly. These 8 bolts will be removed later for valve

inspection. Remove center 4 bolts (6mm).

2. Gently pull Manifold Assembly away from crankcase. Be

careful to pull straight to avoid damaging Plungers. Rotation

of Crankshaft may aid in separating Manifold Assembly from

Crankcase Assembly.

3. Lay Manifold Assembly on work surface and remove 8 outer

bolts. Manifold Assembly should separate easily to allow

access to Valve Assemblies. Inspect Manifold O-Rings for

damage and replace if necessary. [Note: For Valve Service

continue to Step 4, for Seal Service skip to Step 7.]

4. Inlet Valves are larger than Outlet Valves for 508 & 511. Model

516 Valves are the same. Grasp Valve Cage with pliers and

gently rock and pivot until Valve comes free.

5. Examine Valves for damage such as pitting, gouging, or

broken parts. If damaged, replace with parts referenced in

the kit reference chart on page 3.

6. Install Valve Assemblies according to type and hole size.

Valve Gasket can be fit around and pushed after Valve

Assembly has been installed. Be careful not to roll Valve

Gasket edge over during installation. Valve Gasket should

be flat without bulges around Valve Seat.

7. Examine Plungers for cracks or surface damage. Replace

Plunger and Gasket if damaged as follows:

a. Remove Plunger Bolt (mm), Gasket and Plunger

Support.

b. Inspect and clean Support.

c. Place new Gasket on Plunger Bolt, then New Plunger,

and finally Support. Note: Support end of Plunger has

an identifying mark or dot.

d. Install assembly into Connecting Rod end and torque

to 5 ft. lbs.

[Note; For Seal Service continue with Step 8. To complete

Valve service skip to Step 13.]

8. Remove Seal Retainer, V packing, Spreader and Wave Washer

from ported manifold. Inserting a plastic driver in the wave

washer area may aid the process. Inspect seal bore for

damage and clean if necessary.

9. The Vacuum Seal can be removed from the inside of Seal

Retainer with a plastic driver, to avoid scratching surface.

Inspect for damage. Complete Seal Service with parts

referenced in the kit reference chart on page 3.