Milwaukee M18 Manuel De L'utilisateur page 37

Counter Balance
Drive
Hub
3/16" x 1-1/2"
steel pin
or the
equivalent
30
36
41
51 52
52
41 51 36
20 21
Remove Crank Assembly (17) from Left Gearcase Assembly (29) by separating / removing Right Hous-
ing Half (30). Remove Bearing Retaining Plate Screws (11) and Bearing Plate (56) from Left Gearcase
Assembly (29). Place a 3/16" diameter x 1-1/2" long steel rod down through the opening in the Counter
Balance until it bottoms out through the 3/16" hole in the Drive Hub.
17 Crank Assembly
Connecting Rod
47
29
I.D.
Splined
Notches
IMPORTANT:
Concave side of Disc Spring
(41) must face toward Metal
Plates (51,52) and Gear (36).
Be sure that notches on Metal
Plate (52) engage with cor-
responding recesses in Spiral
Gear (36).
NOTE:
Do not wash Crank Assembly
(17) in solvent solutions; wipe
off only using a clean, dry lint
free Cloth.
71 72
4.705"±0.006"
(119.5±0.15)
Next place a 3/16 hex key into Drive Hub Bolt (5) and turn
11
Drive Hub Bolt slowly in a counter-clockwise direction until
(2x)
56
5
Right hand
thread
3. Turn Crankshaft/Spindle Assembly by hand, applying a downward pressure until
the splines located on the bottom of the Crank Assembly Drive Hub drop down
and interlock with the splined notches in the I.D. of Metal Plate (51). Once the
two pieces are interlocked together, hold the assembly down tight and turn
Gearcase Assembly (29) over to enable the Right Handed Drive Bolt (5) and
Spacer (47) to be slid through Ball Bearing (2). (Before installing Drive Hub Bolt
(5) be sure to apply Blue Loctite® to bolt threads). Place the 3/16" x 1-1/2" long
steel rod used in disassembly, back through the Counter Balance of Crankshaft
Assembly (17) and slowly turn Right Handed Drive Bolt (5) in a clockwise
direction until 3/16" long steel rod rests against Connecting Rod. Before
tightening Drive Hub Bolt (5), make sure the raised notches located on the O.D.
of Metal Plate (52) are engaged with corresponding recess in Spiral Bevel Gear
(36), see Figure 4. Using an inch pound torque wrench and a 3/16" hex key,
torque Drive Hub Bolt (5) to 210 in./lbs. or bolt can be tightened using a foot
pound torque wrench to 17-18 ft./lbs.
NOTE:
To achieve the proper press dimension shown below, pre-assemble / press
together Ball Bearing (72), Grease Slinger (73) and Pinion Gear (74) prior to
assembly onto the Armature (21).
Place a thin coat of lightweight oil onto the fan end of the armature shaft to aid
in the pressing of the pre-assembled parts. Prior to assembly with the Armature,
be sure that the Bearing Plate Retainer (71) is positioned
with the side reading 'fan side' facing the fan as shown.
IMPORTANT:
When reassembling parts (71, 72, 73 & 74) onto
the Armature (21), use a conventional arbor
press. Utilizing a hydrolic press IS NOT
recommended!
73 74
Apply a thin coat
of lightweight oil
to armature shaft.
3/16" steel pin rest against Connecting Rod. 3/16"
hex key can now be turned counter-clockwise to
loosen and remove RH Drive Hub Bolt (5).
When reinstalling / tightening Right Hand
Drive Hub Bolt (5):
1. Place lubricated Gear Assembly (36, 41, 51 &
52) into Left Gearcase Assembly (29). See
Figure 4 on page 3 for assembly instructions
with correct Disc/Plate orientation).
2. Position assembled Spindle/Crank Assembly
(17, 39, 8, 46, 53, 68, 37 & 69) into Left
Gearcase. (Spindle components should be
pre-lubricated with a light coating of grease
prior to reassembly). It is also beneficial to have
the Barrel Cam (31) and Extension Spring (44)
installed in Left Gearcase (29). Once the
Spindle/Crank Assembly is in the Left
Gearcase, position/seat the Front Bushing Car
rier (58) over Pivot Pin (6) that's pressed into
Left Gearcase Assembly. Secure Orbit Slot (53)
to the Left Gearcase Assembly using the three
Screws (10) removed in disassembly.
21
71
72
73
74
Pre-assemble
these three parts