Mathey Dearman 6SA Saddle Machine - Manual (Page 19)

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7.2.17 Move the Right Single Bearing Bracket (Figure 5 item 4) into position on the backside of Saddle
(Figure 5 item 1), while rotating Pinion Gear (Figure 6 item 4) as need so the teeth mesh in the teeth
of the Ring Gear (Figure 4 item 3).
7.2.18 Reinstall the center and outermost 3/8-16 x 7/8” Hex Head Cap Screws (Figure 4 item 10) and 3/8”
Washer (Figure 4 item 13) into the Right Single Bearing Bracket Assembly (Figure 5 item 4) and
thread into Saddle (Figure 5 item 3) finger tight.
7.2.19 Adjust the Pinion Gear (Figure 6 item 4) of the Right Single Bearing Bracket Assembly (Figure 5 item
4) so there is .005” to .007” gap between the Pinion Gear and the teeth of Ring Gear (Figure 5 item 3).
7.2.20 Tighten all 3/8-16 x 7/8” Hex Head Cap Screws (Figure 5 item 11) that hold the Right Single Bearing
Bracket Assembly (Figure 5 item 4) in position on the Saddle (Figure 5 item 1) with a 9/16” wrench.
7.2.21 Stretch the new Side Drive Chain (Figure 5 item 15) by moving the Right Single Bearing Bracket
Assembly (Figure 5 item 5) with a soft face mallet taking care to maintain the .005” to .007” gap
between the Pinion Gear and the teeth of Ring Gear (Figure 5 item 3).
7.2.22 Retighten all 3/8-16 x 7/8” Hex Head Cap Screws (Figure 5 item 11) that attach the Right Single
Bearing Bracket Assembly (Figure 5 item 4) to Saddle (Figure 5 item 3).
7.2.23 Place the Left Single Bearing Bracket (Figure 5 item 4) in a vise
7.2.24 With a 5/32” / 4mm diameter drift punch remove 3/16” x 1 1/4” long Spring Pin (Figure 6 item 11)
from the sprocket (Figure 6 item 2) and 3/16” x 1” long Spring Pin (Figure 6 item 10) from the Pinion
Gear (Figure 6 item 4).
NOTE: Save 3/16” x 1 ¼” long Spring Pin (Figure 6 item 11) and 3/16” x 1” long Spring Pin (Figure 6
item 10) for reuse at a later time.
7.2.25 With a 5/32” allen wrench loosen the Socket Set Screw (Figure 6 item 7) in the Sprocket (Figure
6item 2) of the Left Single Bearing Bracket Assembly (Figure 5 item 4).
7.2.26 Remove the Sprocket (Figure 6 item 2) and Axle (Figure 6 item 3) from the Left Single Bearing
Bracket Assembly (Figure 5 item 4).
7.2.27 With a 1/4" / 6mm drift punch drive the Axle (Figure 6 item 3) and Pinion Gear (Figure 6 item 4)
assembly out of the Left Single Bearing Bracket Assembly (Figure 5 item 4).
7.2.28 With a 1/4" / 6mm drift punch drive Axle (Figure 6 item 3) out of Pinion Gear (Figure 6 item 4).
7.2.29 Press the new Axle (Figure 6 item 3) into Pinion Gear (Figure 6 item 4).
Warning: Redrilling of the old Axle will severely weaken the axle.
7.2.30 Place a 3/16” / 4.7mm drill in the 3/16” / 4.7mm hole locate in the flange of the Pinion Gear (Figure
6 item 4) and drill completely through axle (Figure 6 item 3) and Pinion Gear (Figure 6 item 4).
7.2.31 Install the 3/16” x 1” long Spring Pin (Figure 5 item 10) in the 3/16” / 4.7mm hole in the flange of the
Pinion Gear (Figure 6 item 3).
7.2.32 Install the Axle (Figure 6 item 3) and Pinion Gear (Figure 6 item 4) assembly into the Left Single
Bearing Bracket Assembly (Figure 5 item 4).
7.2.33 Place the Sprocket (Figure 5 item 2) on the Axle (Figure 5 item 3) with the hub of the Sprocket facing
inward.
7.2.34 Place the Drive Chain (Figure 5 item 15) on the Sprocket (Figure 6 item 2) of the Left Single Bearing
Bracket Assembly (Figure 5 item 4) and Crank Gear and Double Sprocket (Figure 7 item 4) of the
Double Bearing Bracket Assembly (Figure 5 item 5).
7.2.35 When placing the Left Single Bearing Bracket Assembly (Figure 5 item 4) in position on the backside
of the Saddle (Figure 5 item 1), rotate the Pinion Gear (Figure 6 item 4) so the teeth mesh in the teeth
of Ring Gear (Figure 5 item 3).
7.2.36 Install the 3/8-16 x 7/8” Hex Head Cap Screws (Figure 5 item 11) and 3/8” Washers (Figure 5 item
13) through the Left Single Bearing Bracket (Figure 5 item 4) and screw them into the Saddle (Figure
5 item 1) finger tight.
7.2.37 There should be a .005” to .007” gap between the Pinion Gear (Figure 6 item 4) and the teeth of Ring
Gear (Figure 5 item 3). Make sure the Pinion Gears (Figure 5 item 4) of the Single Bearing Brackets
(Figure 5 items 4) are evenly spaced in the teeth of the Ring Gear (Figure 4 item 3).