Gib Key Removal And Installation - MASSEY FERGUSON 1745 Workshop Service Manual

General Information

Gib Key Removal And Installation

FIG. 34: Gib keys (1) are tapered keys with a tang on the
thick end. A gib key is both a locking component and hub
retainer. The hub must have a tapered key way that fits
the gib key. The gib key will lock the hub in position. No
other locking component such as a set screw is needed.
Remove paint from the shaft on both sides of the hub.
Use a pry bar (2) to apply pressure between the gib key
and the hub. While holding pressure on the gib key, drive
the hub away from the gib key by hitting the hub with a
hammer.
FIG. 35: Make a special tool to remove gib keys from
locations with little access. Use a 25 mm (1 in) wide chisel
and grind the width of the chisel to 16 mm (5/8 in) (1).
Grind a slot (2) in each side of the head of the chisel. The
slot is used to keep the chisel from slipping.
FIG. 36: Insert the chisel between the gib key head and
the hub. Drive against the chisel with a hammer. Use the
narrow side of the chisel for smaller gib keys and the wide
side of the chisel for large gib keys.
After the hub and gib key loosens, remove the gib key
with the pry bar.
Remove the hub.
Put a thin layer of anti-seize compound or grease on the
shaft to prevent sticking or the formation of rust between
the hub and shaft.
FIG. 37: Install the hub. Make sure the taper in the hub is
in the same direction as the gib key taper. Align the key
way in the hub with the key way on the shaft. Install the
gib key.
Hold the sheave or sprocket in position on the shaft. Hit
the gib key with a hammer until the gib key is seated.
NOTE: The gib key does not have to be driven extremely
hard into the hub to seat. Make sure the head of
the gib key is deformed.
01-24
1
FIG. 34
1 1
2
FIG. 35
FIG. 36
FIG. 37
2
STD-98A02
L97A-0295
L97A-0296
STD-98A01
4283399M1