Mathey Dearman 4SA Saddle Machine - Manual (Page 17)

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7.2.5 Remove the center and outermost 3/8-16 x 3/4” Hex Head Cap Screws (Figure 4 item 11) and 3/8”
Washer (Figure 4 item 14) from the Right Single Bearing Bracket Assembly (Figure 4 item 5) with a
9/16” wrench.
Note: Do not loosen the loosen the 3/8-16 x 1 1/4” Hex Head Cap Screws (Figure 4 item 11) that
hold the Double Bearing Bracket (Figure 4 item 6) to the Saddle (Figure 4 item 12).
7.2.6 Tilt the Right Single Bearing Bracket Assembly (Figure 4 item 5) inward toward the Double Bearing
Bracket Assembly (Figure 4 item 6)
7.2.7 Remove the Drive Chain (Figure 4 item 15) from the Sprocket (Figure 4 item 2) of the Right Single
Bearing Bracket Assemblies (Figure 4 item 5) and the Double Sprocket (Figure 6 item 3) of the
Double Bearing Bracket Assembly (Figure 4 item 6).
7.2.8 Install the new Drive Chain (Figure 4 item 15) onto the Sprocket (Figure 4 item 2) of the Right Single
Bearing Bracket Assemblies (Figure 4 item 5) and the Double Sprocket (Figure 6 item 3) of the
Double Bearing Bracket Assembly (Figure 4 item 6).
7.2.9 Move the Right Single Bearing Bracket (Figure 4 item 5) into position on the backside of Saddle
(Figure 4 item 1), while moving Ring Gear (Figure 4 item 3) as needed so the teeth of the Pinion Gear
(Figure 5 item 3) of the Right Single Bearing Bracket Assembly (Figure 4 item 5) mesh with the teeth
of the Ring Gear (Figure 4 item 3).
7.2.10 Reinstall the center and outermost 3/8-16 x 3/4” Hex Head Cap Screws (Figure 4 item 11) and 3/8”
Washer (Figure 4 item 14) into the Right Single Bearing Bracket Assembly (Figure 4 item 5) and
thread into Saddle (Figure 4 item 3) finger tight.
7.2.11 Adjust the Pinion Gear (Figure 5 item 3) of the Right Single Bearing Bracket Assembly (Figure 4 item
5) so there is .005” to .007” gap between the Pinion Gear (Figure 5 item 3) and the teeth of Ring Gear
(Figure 4 item 3).
7.2.12 Tighten all 3/8-16 x 3/4” Hex Head Cap Screws (Figure 4 item 11) that hold the Right Single Bearing
Bracket Assembly (Figure 4 item 5) in position on the Saddle (Figure 4 item 1) with a 9/16” wrench.
7.2.13 Place the Left Single Bearing Bracket Assembly (Figure 4 item 4) in a vise.
7.2.14 With a 5/32” / 4mm diameter drift punch remove 3/16” x 1 1/4” long Spring Pin (Figure 5 item 11)
and 3/16” x 1” long Spring Pin (Figure 5 item 10).
NOTE: Save 3/16” x 1 ¼” long Spring Pin and 3/16” x 1” long Spring Pin (Figure 5 item 10) for reuse
at a later time.
7.2.15 With a 5/32” allen wrench loosen the Socket Set Screw (Figure 5 item 6) in the Sprocket (Figure 5
item 2) of the Right Single Bearing Bracket Assembly (Figure 5).
7.2.16 Remove the Sprocket (Figure 5 item 2) from the axle (Figure 5 item 4) of the Single Bearing Bracket
Assembly (Figure 5).
7.2.17 With a 1/4" / 6mm drift punch drive the Axle (Figure 5 item 4) / Pinion Gear (Figure 5 item 3)
assembly out of the Left Single Bearing Bracket Assembly (Figure 5).
7.2.18 With a 1/4" / 6mm drift punch drive Axle (Figure 5 item 4) out of Pinion Gear (Figure 5 item 3).
7.2.19 Press the new Axle (Figure 5 item 4) into Pinion Gear (Figure 5 item 3).
Warning: Redrilling of the old Axle will severely weaken the axle.
7.2.20 Place the 3/16” / 4.7mm in the 3/16” / 4.7mm hole locate in the flange of the Pinion Gear (Figure 5
item 3) and drill completely through axle (Figure 5 item 4) and Pinion Gear (Figure 5 item 3).
7.2.21 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 5 item 3).
7.2.22 Install the Axle (Figure 5 item 4) / Pinion Gear (Figure 5 item 3) assembly into the Left Single Bearing
Bracket Assembly (Figure 4 item 4).
7.2.23 Place the Sprocket (Figure 5 item 2) on the Axle (Figure 5 item 4) with the hub of the Sprocket facing
outward.
7.2.24 Place the Drive Chain (Figure 4 item 15) on the Sprocket (Figure 5 item 2) of the Left Single Bearing
Bracket Assembly (Figure 5) and the Double Sprocket (Figure 6 item 3) of the Double Bearing
Bracket Assembly (Figure 6).