Adjust Upper Drive Roll Chain

IMPORTANT: Let spring length shorten to 235—250 mm (9-1/4—9-27/32 in.) before removing two links to avoid chain rubbing tension arm tube.

NOTE: Idler sprocket arm contacts a stop when spring length is approximately 235 mm (9-1/4 in.) or chain strands are approximately 15 mm (0.60 in.) apart.

E58861-UN-04AUG10

A - Dimension

B - Chain

C - Nut

Open left-hand side door.

If spring dimension (A) from hook to hook is not within specifications perform the following:

Item	Measurement	Specification
Upper Drive Roll Chain Spring	Distance	235—305 mm (9-1/4—12 in.)

1. Loosen nut (C) to release chain tension.

2. Separate chain (B) at connecting (master) link.

   • If dimension (A) is less than 235 mm (9-1/4 in.), remove two chain links. NOTE: Do not install chain half (offset) links.
     
   
   

3. Assemble connecting (master) link in chain (B).

4. Hold eye bolt from turning and tighten nut (C) against angle.

5. Verify that front strand of chain is not rubbing tension arm tube.

6. Close left-hand side door.