Service Engine Air Filter Precleaner System

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

NOTE: 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.

1. 
   RXA0134280-UN-20AUG13

   A - Aspirator Hose Cover

   B - Aspirator Hose Cover Screws

   C - Tool Box Support Bracket

   D - Tool Box Support Bracket Cap Screws

   Disconnect battery ground (-) cable.

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2. Remove battery compartment cover.

3. Remove two screws (B) holding aspirator hose cover (A). Remove aspirator hose cover.

4. Remove three screws (D) holding tool box support bracket (C). Remove tool box support bracket.

5. 
   RXA0134281-UN-20AUG13

   
   RXA0134282-UN-20AUG13

   A - Precleaner Assembly

   B - Precleaner Clamp

   C - Aspirator Hose Clamps

   D - Aspirator Hose

   E - Aspirator Check Valve

   Loosen clamp (B) holding precleaner assembly (A) to air cleaner canister.

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6. Loosen clamps (C) securing aspirator hose (D) to aspirator check valve (E) and aspirator hose to precleaner assembly (A).

7. Remove aspirator hose (D).

8. 
   RXA0134283-UN-21AUG13

   A - Precleaner Mounting Cap Screws

   Remove six cap screws (A) holding precleaner to support bracket and lift precleaner assembly from air cleaner canister.

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9. 
   RXA0134284-UN-21AUG13

   
   RXA0134285-UN-21AUG13

   A - Lower Aspirator Hose Clamp

   B - Aspirator Hose

   C - Precleaner Extension Tube

   D - Precleaner

   E - Precleaner Extension Tube

   F - Precleaner to Extension Tube Hose Clamp

   G - Upper Aspirator Hose Clamp

   Remove lower aspirator hose clamp (A) to remove aspirator hose (B) from precleaner extension tube (C).

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10. Loosen clamp (F) holding precleaner (D) to extension tube (E).

11. Remove upper aspirator hose clamp (G) to separate aspirator hose from precleaner. Remove precleaner from extension tube.

12. Inspect components for damage. Replace as necessary.

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

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

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

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

17. Reassemble all components in reverse order of disassembly. Tighten according to specifications:

Item	Measurement	Specification
Precleaner Mounting Cap Screws (H)	Torque	25 N·m (18.5 lb.-ft.)
Aspirator Hose Clamps (C)	Torque	10 N·m (7.4 lb.-ft.)
Precleaner Clamp (D)	Torque	6.5 N·m (4.8 lb.-ft.)
Precleaner to Extension Tube Hose Clamp (N)	Torque	6.5 N·m (4.8 lb.-ft.)