Belt Replacement - Jet JPJ-12B Operating Instructions And Parts Manual

Figure 19

10.8 Belt Replacement

Refer to Figures 20 - 22:
Preparation
To replace the cutterhead drive belt and/or the
planer feed-roller belt, the jointer fence assembly
and two back panels must first be removed as
described below. A 4mm hex wrench, 5mm hex
wrench, and 17mm open wrench are required.
Disconnect machine from
power source
adjustments. Failure to comply may cause
serious injury.
1. Disconnect machine from power source.
2. Remove four button head socket screws (B)
and the jointer fence assembly (A).
3. Remove two button head socket screws (D)
and the upper back panel (C).
4. Remove four button head socket screws (F)
and the lower back panel (E).
5. Loosen top nut (L) on the tension adjustment
screw (N), then turn the bottom nut (M) to
raise the motor (I) and create slack in feed-
roller belt (H) and cutterhead drive belt (G).
If there is still tension in feed-roller belt,
loosen two socket head cap screws attaching
gearbox to cabinet using a 5mm hex wrench.
6. Remove the feed-roller belt (H) from around
the feed-roller pulley (P) and motor pulley (K).
If the cutterhead drive belt (G) is to be replaced,
continue. Otherwise, proceed to step 10.
before making
Cutterhead Drive Belt Replacement
Note: If the cutterhead drive belt (G) is to be
replaced, steps 1 - 6 must be performed to
remove the feed-roller belt (H) before the
cutterhead drive belt can be replaced.
7. Remove cutterhead drive belt (G) from
around cutterhead pulley (O) and pulley (J).
8. Loop the new cutterhead drive belt around
the larger (inner) motor pulley (J) and
cutterhead pulley (O).
If the feed-roller belt (H) is to be replaced as well,
proceed to step 10. Otherwise, continue.
9. Loop the original feed-roller belt (H) around
the smaller (outer) motor pulley (K) and feed-
roller pulley (P).
Proceed to step 11.
Feed-Roller Belt Replacement
10. Loop the new feed-roller belt around the
smaller (outer) motor pulley (K) and feed-
roller pulley (P).
Concluding Steps
11. Turn bottom nut (M) on tension adjustment
screw (N) to lower the motor (I) and create
tension in feed-roller belt (H) and cutterhead
drive belt (G), then tighten the top nut (L).
If the gearbox was adjusted in step 5,
reposition the gearbox to maintain tension on
the feed-roller belt and tighten the two socket
head cap screws.
any
12. Replace the lower back panel (E), upper back
panel (C), and jointer fence assembly (A) with
their respective screws.
17
Figure 20