Mathey Dearman 3SA Saddle Machine - Manual (Page 17)

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7.1 Timing the Ring Gear to the Pinion Gears of the Manual 3SA
Adjusting of the timing requires the purchase of the Axle (Figure 5 item 5).
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 4 item 10 ) and Hex Nuts Figure 4 item 13) using a
1/2" wrench.
NOTE: Tie Rod Handles (Figure 4 item 7), Hex Head Cap Screws (Figure 4 item 10) and Hex Nuts (Figure 4 item
13) will be used during reassembly
7.1.2 Remove 5/16‐18 x 1 1/4” Hex Head Cap Screws (Figure 4 item 12) and 5/16” Washer (Figure 4 item 14) from
the Left Single Bearing Bracket (Figure 4 item 4) with a 9/16” wrench.
7.1.3 Remove the Drive Chain (Figure 4 item 15) from the Sprocket 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) from the single bearing bracket (Figure 5).
NOTE: Save 3/16” x 1 ¼” long Spring Pin (Figure 5 item 11) and 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 7) in the Sprocket (Figure 5 item 3) of the
Single Bearing Bracket Assembly (Figure 5).
7.1. 7 Remove the Sprocket (Figure 5 item 3) from the axle (Figure 5 item 5) of the Single Bearing Bracket Assembly
(Figure 5).
7.1.8 With a 1/4" / 6mm drift punch drive the Axle (Figure 5 item 5) / Pinion Gear (Figure 5 item 4) assembly out of
the Single Bearing Bracket Assembly (Figure 5).
7.1.9 With a 1/4" / 6mm drift punch drive Axle (Figure 5 item 5) out of Pinion Gear (Figure 5 item 4).
7.1.10 Press the new Axle (Figure 5 item 5) into Pinion Gear (Figure 5 item 4).
Warning: Redrilling of an old Axle will severely weaken the axle
7.1.11 Drill a 3/16” / 4.7mm hole completely through the hole in the center of the flange of the Pinion Gear (Figure 5
item 4).
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 5) / Pinion Gear (Figure 5 item 4) assembly into the Left Single Bearing Bracket
Assembly (Figure 4 item 4).
7.1.14 Place the Sprocket (Figure 5 item 3) on the Axle (Figure 5 item 5) with the hub of the Sprocket facing outward.
7.1.15 Place the Drive Chain (Figure 4 item 15) on the Sprocket of the left Single Bearing Bracket Assembly (Figure 4
item 4) and the Double Sprocket 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) of the left Single Bearing Bracket Assembly so teeth of the pinion gear mesh in the teeth of Ring
Gear (Figure 4 item 3).
7.1.17 Install the 5/16‐18 x 1 1/4” Hex Head Cap Screws (Figure 4 item 12) and 5/16” 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 4) and the teeth of Ring Gear (Figure
4 item 3).
7.1.19 Snug the 5/16‐8 x 1 1/4” Hex Head Cap Screws (Figure 4 item 12) with a 9/16” wrench.
7.1.20 Tighten the Socket Set Screw (Figure 5 item 7) in the Sprocket (Figure 5 item 3) of the Left Single Bearing
Bracket (Figure 5) with a 5/32” allen wrench.
7.1.21 Rotate the Ring Gear (Figure 4 item 3) clockwise (as viewed from the front of the machine) check the entry of
the Pinion Gear (Figure 5 item4) of the Right and Left Single Bearing Bracket Assemblies (Figure 4 items 4 & 5)
into the Ring Gear (Figure 4 item 3).
7.1.22 Adjust the Pinion Gear (Figure 6 item 3) of the Single Bearing Brackets (Figure 5) as needed so that it enters the
Ring Gear (Figure 5 item 3) without hesitation.
Note: When the Pinion Gears (Figure 5 item 4) of the Right and Left Single Bearing Bracket (Figure 4 items 4 &
5) enters the Ring Gear (Figure 4 item 3) it should not suddenly pull the Ring Gear. As the Pinion Gears of the
Single Bearing Brackets (Figure 4 items 4 & 5) leaves the Ring Gear (Figure 4 item 3) it should not suddenly
push the Ring Gear.