End Gears - Grizzly G4003G Owner's Manual

4. Move headstock feed selection lever to left—
this selects feed rod rotation.
5. Use headstock feed direction lever to select
direction of cross feed travel.
When this lever is to right, cross slide will
travel away from operator; conversely, when
lever is to left, cross slide will travel toward
operator.
6.
Push apron feed selection lever toward spin-
dle, then shift it down to select cross slide for
power feed.

End Gears

The end gears must be correctly setup for power
feed, inch, or metric threading operations. Use
Figure 68 to identify the upper F gear, middle
86T/91T change gears, and lower G gear, which
are also referenced on the feed rate and thread-
ing charts.
Figure 68. End gear identification.
Tools Needed
Hex Wrench 3mm .............................................. 1
Hex Wrench 5mm .............................................. 1
Wrench or Socket 17mm ................................... 1
To change end gears:
1. DISCONNECT MACHINE FROM POWER!
2. Remove end gear cover.
Model G4003G (Mfd. Since 1/15)
Upper
F Gear
Middle
86T/91T Gear
Lower
G Gear
Qty
3. While holding middle 86T/91T gear assembly
(see FIgure 69), loosen the support arm hex
nut and slowly let assembly pivot down.
F Gear
86T/91T
Gear
Support Arm
Hex Nut
Figure 69. End gear components.
4. Remove middle gear, then F and G gears.
Note: Make sure the keys stay inserted in the
shafts as you slide the F and G gears off.
5. Replace F and G gears with correct gears for
operation as directed by charts.
Note: The 40T and 60T gear used as the
G gear have a stepped face that allows the
gear to mesh with either the outside or inside
teeth of the middle gear, depending upon the
configuration needed.
6. Secure F and G gears with fasteners, but do
not overtighten. The fasteners merely keep
them in place and overtightening may hinder
rotation.
7. Slide middle gear against G gear until it
meshes with a 0.002"–0.004" backlash, then
tighten middle gear hex nut.
8. Pivot middle gear up against F gear until it
meshes with same backlash, then tighten
support arm hex nut.
9.
Re-install end gear cover.
Middle Gear
Hex Nut
G Gear
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