tonycrd wrote:
Bob, you are looking at the wrong end of the tool
The outer hex is where you put your wrench on, the other side is a socket that will hold the 3/8- (almost 10mm) hex on the axle.
Ranger1, there are only 2 types, the hex or the splines. Most of us seem to have the hex type.
KeighJeigh, yes a big allen socket with an airpowered tool will take it right of.
Or you can take the alternator of your engine and then hammer the thing of. Someone needs to hold the alternator shaft with a 3/8 socket while you do that.
See the locked thread.
EDIT: Ranger1, you planning on making a habbit out of this? You beat me again in replying by ow....2 seconds
OK got it. It looks like the tool in the FSM that is for the internal spline on the shaft. My FSM shows two types of decouplers, hex and spline, and two types of alternator shafts, hex and spline. I was able to get mine off by holding the shaft with a deep 10mm socket and ratchet and then hit a shollow hole that was drilled off center on the face with a hammer and a punch in a CCW rotation.
From the factory service Manual (was hopeing that it would copy the pictures also)
OPERATION
The generator decoupler is used only with
certain engines. The decoupler (Fig. 5) is a one-way
clutch designed to help reduce belt tension fluctuation,
vibration, reduce fatigue loads, improve belt life,
reduce hubloads on components, and reduce noise.
Dry operation is used (no grease or lubricants). The
decoupler is not temperature sensitive and also has a
low sensitivity to electrical load. The decoupler is a
non-serviceable item and is to be replaced as an
assembly.
DIAGNOSIS AND TESTING - GENERATOR DECOUPLER
CONDITION POSSIBLE CAUSES CORRECTION
Does not drive generator
(generator not charging)
Internal failure Replace decoupler
Noise coming from
decoupler
Internal failure Replace decoupler
REMOVAL
The generator decoupler is used only with
certain engines.
Two different type generator decoupler pulleys are
used. One can be identified by the use of machined
splines (Fig. 6). The other can be identified by a hex
opening (Fig. 7) and will not use splines.
Different special tools are required to service each
different decoupler. Refer to following procedure.
Fig. 6 GENERATOR DECOUPLER PULLEY (INA)
1 - GENERATOR
2 - DECOUPLER (INA)
3 - MACHINED SPLINES
Fig. 7 GENERATOR DECOUPLER PULLEY (LITENS)
1 - DECOUPLER (LITENS)
2 - HEX OPENING
KJ CHARGING SYSTEM 8F - 27
GENERATOR DECOUPLER PULLEY (Continued)
INA Decoupler
(1) Disconnect negative battery cable.
(2) Remove generator and accessory drive belt.
Refer to Generator Removal.
(3) Position Special Tool #8823 (VM.1048) into
decoupler (Fig.
.
(4) Determine if end of generator shaft is hex
shaped (Fig. 9) or is splined (Fig. 10). If hex is used,
insert a 10MM deep socket into tool #8823 (VM.1048)
(Fig. 11). If splined, insert a 5/16” 6-point hex driver,
or a 10MM 12-point triple square driver into tool
#8823 (VM.1048) (Fig. 12).
(5) The generator shaft uses conventional righthand
threads to attach decoupler. To break decoupler
loose from generator threads, rotate end of tool clockwise
(Fig. 11) or, (Fig. 12).
(6) After breaking loose with tool, unthread decoupler
by hand from generator.
Fig. 8 #8823 TOOL AND INA DECOUPLER
1 - INA DECOUPLER
2 - TOOL #8823 (VM.1048)
Fig. 9 END OF GENERATOR SHAFT (HEX)
1 - GENERATOR SHAFT
2 - HEX
Fig. 10 END OF GENERATOR SHAFT (SPLINED)
1 - GENERATOR SHAFT
2 - SPLINES
8F - 28 CHARGING SYSTEM KJ
GENERATOR DECOUPLER PULLEY (Continued)
Litens Decoupler
(1) Disconnect negative battery cable.
(2) Remove generator and accessory drive belt.
Refer to Generator Removal.
(3) Position Special Tool #8433 (Fig. 13) into
decoupler. Align to hex end of generator shaft.
(4) The generator shaft uses conventional righthand
threads to attach decoupler. To break decoupler
loose from generator threads, rotate end of tool clockwise
(Fig. 14).
(5) After breaking loose with tool, unthread decoupler
by hand from generator.
Fig. 11 DECOUPLER REMOVAL (INA-HEX)
1 - DEEP 10 MM SOCKET
2 - TOOL #8823 (VM.1048)
Fig. 12 DECOUPLER REMOVAL (INA-SPLINED)
1 - DRIVER
2 - TOOL #8823 (VM.1048)
3 - 17 MM WRENCH
Fig. 13 # 8433 TOOL AND LITENS DECOUPLER
Fig. 14 DECOUPLER REMOVAL (LITENS)
KJ CHARGING SYSTEM 8F - 29
GENERATOR DECOUPLER PULLEY (Continued)
INSTALLATION
INA Decoupler
(1) Thread decoupler pulley onto generator shaft
by hand (right-hand threads).
(2) Position Special Tool #8823 (VM.1048) into
decoupler (Fig.
.
(3) Determine if end of generator shaft is hex
shaped (Fig. 9) or is splined (Fig. 10). If hex is used,
insert a 10MM deep socket into tool #8823 (VM.1048)
(Fig. 15). If splined, insert a 5/16” 6-point hex driver,
or a 10MM 12-point triple square driver into tool
#8823 (VM.1048) (Fig. 16).
(4) Do not use an adjustable, ratcheting “click
type” torque wrench. Most “click type”
wrenches will only allow torque to be applied
in a clockwise rotation. Use a dial-type or
beam-type wrench. Tighten in counter-clockwise
rotation (Fig. 15) or, (Fig. 16). Refer to torque specifications.
(5) Install accessory drive belt, and generator.
Refer to Generator Installation.
(6) Connect negative battery cable.
Litens Decoupler
(1) Thread decoupler pulley onto generator shaft
by hand (right-hand threads).
(2) Position Special Tool 8433 (Fig. 13) into decoupler.
Align tool to hex end of generator shaft.
(3) Do not use an adjustable, ratcheting “click
type” torque wrench. Most “click type”
wrenches will only allow torque to be applied
in a clockwise rotation. Use a dial-type or
beam-type wrench. Tighten in counter-clockwise
rotation (Fig. 17). Refer to torque specifications.
(4) Install accessory drive belt, and generator.
Refer to Generator Installation.
(5) Connect negative battery cable.
Fig. 15 DECOUPLER INSTALLATION (INA-HEX)
1 - 10MM DEEP SOCKET
2 - TOOL # 8823 (VM.1048)
Fig. 16 DECOUPLER INSTALLATION (INA SPLINED)
1 - DRIVER
2 - TOOL # 8823 (VM.1048)
3 - BACKUP WRENCH
Fig. 17 DECOUPLER INSTALLATION (Litens)