Inspect and Replace A/C Compressor Belt-Cab (5420N and 5520N)

NOTE: Pulley and spring tensioner are not serviceable.

1. Remove right grille panel.

2. Remove nut (A), cap screw (B) and right radiator support bracket (C).

3. Release tension on belt using a 3/8 in. drive long-handle breaker bar (D). Remove belt (E) from alternator pulley.

4. Release tension on tensioner arm and remove tool.


A-Nut
B-Cap Screw
C-Radiator Support Bracket
D-Breaker Bar
E-A/C Belt

LV2398
LV2399

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NOTE: A belt tension gauge will not give an accurate measurement of the belt tension when automatic belt tensioner is used. Measure tensioner spring tension using a torque wrench and procedure outlined below.

5. Put a mark (A) on swing arm of tensioner as shown.

6. Measure 21 mm (0.83 in.) from (A) and put a mark (B) on tensioner mounting base.


A-Swing Arm Mark
B-Tensioner Mounting Base Mark

LV2164

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7. Rotate the swing arm using a torque wrench until marks (A and B) are aligned.

8. Record torque wrench measurement and compare with specification. Replace belt tensioner assembly if recorded measurement is below specification.

Specification

Swing Arm Spring Tension -Torque 18-22 N·m (13-16 lb-ft)

9. Make sure belt is in place and release tension on tensioner arm.

10. Install radiator support bracket, cap screw and nut

11. Install right grille panel.


A-Swing Arm Mark
B-Tensioner Mounting Base Mark

LV2165

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