Mathey Dearman 4SA Saddle Machine - Manual (Page 15)

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7.1 Timing the Ring Gear to the Pinion Gears of Manual 4SA Saddle Machine
Adjusting of the timing requires the purchase of the Axle (Figure 5 item 4).
Note: Redrilling of the old Axle will severely weaken the axle
7.1.1 Remove both Tie Rod Handles (Figure 4 item 7) from the Single and Double Bearing Bracket
Assemblies (Figure 4 items 4, 5 & 6) by removing Hex Head Cap Screws (Figure 5 item 10 ) and Hex
Nuts Figure 5 item 13) using a 1/2" wrench.
NOTE: Save Hex Head Cap Screws (Figure 5 item 10) and Hex Nuts Figure 5 item 13)
7.1.2 Remove 3/8-16 x 3/4” Hex Head Cap Screws (Figure 4 item 10) and 3/8” Washer (Figure 4 item 14)
from the Left Single Bearing Bracket (Figure 4 item 4) with a 9/16” wrench.
Note: Do not loosen the 3/8”-16 x 3/4" & 1 1/4" Hex Head Cap Screws (Figure 4 Items 11 & 12)
hold the Right Single Bearing Bracket (Figure 4 item 5) and Double Bearing Bracket Assembly
(Figure 4 item 6) to the Saddle (Figure 4 item 1).
7.1.3 Remove the Drive Chain (Figure 4 item 15) from the Sprocket (Figure 4 item 2) of the Left Single
Bearing Bracket Assembly (Figure 4 item 4).
7.1.4 Place the Left Single Bearing Bracket Assembly (Figure 4 item 4) in a vise.
7.1.5 With a 5/32” / 4mm diameter drift punch remove 3/16” x 1 ¼” 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 3/16” x 1” long Spring Pin (Figure 5 item 10) for reuse at a
later time.
7.1.6 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).
7.1.7 Remove the Sprocket (Figure 5 item 2) from the axle (Figure 5 item 4) of the Single Bearing Bracket
Assembly (Figure 5).
7.1.8 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 4 item 4).
7.1.9 With a 1/4" / 6mm drift punch drive Axle (Figure 5 item 4) out of Pinion Gear (Figure 5 item 3).
7.1.10 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
7.1.11 Drill a 3/16” / 4.7mm hole completely through the center of the flange of the Pinion Gear (Figure 5 item
3).
7.1.12 Install the 3/16” x 1” long Spring Pin (Figure 5 item 10) in the 3/16” / 4.7mm hole.
7.1.13 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).
7.1.14 Place the Sprocket (Figure 5 item 2) on the Axle (Figure 5 item 4) with the hub of the Sprocket facing
outward.
7.1.15 Place the Drive Chain (Figure 4 item 15) on the Sprocket (Figure 5 item 2) and the Double Sprocket (Figure
6 item 3) of the Double Bearing Bracket Assembly (Figure 4 item 6).
7.1.16 When placing the Left Single Bearing Bracket Assembly(Figure 4 item 4) in position, rotate the Pinion Gear
(Figure 5 item 3) so teeth mesh in the teeth of Ring Gear (Figure 4 item 3).
7.1.17 Install the 3/8-16 x 3/4” Hex Head Cap Screws (Figure 4 item 10) and 3/8” Washer (Figure 4 item 14) into
the Left Single Bearing Bracket (Figure 4 item 4) and screw into the Saddle (Figure 4 item 1).
7.1.18 The should be a .005” to .007” gap between the Pinion Gear (Figure 5 item 3) and the teeth of Ring Gear
(Figure 4 item 3).
7.1.19 Snug the 3/8-16 x 3/4” Hex Head Cap Screws (Figure 4 item 10) with a 9/16” wrench.
7.1.20 Tighten the Socket Set Screw (Figure 5 item 6) in the Sprocket (Figure 5 item 2) of the left Single Bearing
Bracket (Figure 4 Item 4) with a 5/32” allen wrench.