Assembly - Guardian 4270 Diagnostic Repair Manual

Figure 8-5. – Applying Tension to Drive Belt
Tensioner
Figure 8-6. – Position of Drive Belt Tensioner
FAN BELT:
1. Install fan belt tensioner as shown in Figure 8-7. Snug mount-
ing bolt but do not tighten.
2. Using a small bubble level, verify that tensioner is level hori-
zontally. If needed, tap the mounting bracket to level it (see
Figure 8-8).
3. Using a 36mm wrench or equivalent, apply tension to the belt
(see Figure 8-9).Belt tension should be 15° (Figure 8-7).
Once proper tension is achieved tighten hold down bolt to 49
ft-lbs using a 16mm socket.
LINE CORNER
UP BETWEEN
5˚ to 10˚
LINE UP ARROW
WITH 15˚ MARK
Figure 8-7. – Position of Fan Belt Tensioner
Figure 8-8. – Leveling Fan Belt Tensioner
Figure 8-9. – Tensioning Fan Belt Tensioner
Section 8

ASSEMBLY

Page 59