Service Engine Air Filter Precleaner System

Service interval may vary due to operating conditions. If engine air filters clog prematurely, intake precleaner components may be dirty. Inspect and clean or replace precleaner components.

IMPORTANT: Do not remove engine air filters while servicing precleaner system.

1. 
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   A - Exhaust Aspirator Hose Cover

   B - Aspirator Hose Cover Retaining Screws

   C - Precleaner Mounting Cap Screws

   Remove battery compartment cover.

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2. Remove three screws (B) holding exhaust aspirator hose cover (A). Remove aspirator hose cover.

3. Remove six cap screws (C) holding precleaner to support bracket.

4. Loosen clamp (F) holding precleaner assembly (G) to air cleaner canister.

   
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   D - Aspirator Hose Clamps

   E - Aspirator Hose

   F - Precleaner Clamp

   G - Precleaner Assembly

   H - Aspirator Check Valve

   I - Precleaner

   J - Precleaner Extension Tube

   K - Precleaner to Extension Tube Clamp

   L - Aspirator Hose to Precleaner Clamp

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5. Loosen clamps (D) securing aspirator hose (E) to aspirator check valve (H) and aspirator pipe fitting on precleaner assembly.

6. Remove aspirator hose (E).

7. Lift precleaner assembly from air cleaner canister.

8. Loosen clamp (K) holding precleaner (I) to extension tube (J).

9. Separate precleaner from extension tube to remove aspirator hose clamp (L). Remove precleaner from extension.

10. Inspect components for damage. Replace as necessary.

11. Clean dust from aspirator tubes using compressed air, not to exceed 500 kPa (5 bar) (75 psi).

12. Thoroughly wash precleaner and precleaner extension tube in warm (maximum 65.5° C (150° F)) water mixed with a small amount of commercially available nondetergent car wash product. Rinse in clean water. Thoroughly dry before reinstallation.

13. Check aspirator check valve (H) internal flap for freedom of movement. If flap does not move easily, remove check valve assembly and clean or replace as necessary.

14. Inspect aspirator hoses for damage or cracking. Replace as necessary.

15. Reassemble all components in reverse order of disassembly. Tighten all clamps securely.