Ma842c

User Manual: Ma842c

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3261 Series Gearheads
Identification, Specifications, Applications,
and Repair Parts Lists

MA842-20 6/2000

June 2000

MA842C

Chore-Time Warranty

3261 Series Gearheads

Chore-Time Warranty
Chore-Time Equipment (“Chore-Time”) warrants each new Chore-Time product manufactured by it to be free
from defects in material or workmanship for one year from and after the date of initial installation by or for the
original purchaser. If such a defect is found by the Manufacturer to exist within the one-year period, the
Manufacturer will, at its option, (a) repair or replace such product free of charge, F.O.B. the factory of
manufacture, or (b) refund to the original purchaser the original purchase price, in lieu of such repair or
replacement. Labor costs associated with the replacement or repair of the product are not covered by the
Manufacturer.

Conditions and Limitations
1. The product must be installed by and operated in accordance with the instructions published by the
Manufacturer or Warranty will be void.
2. Warranty is void if all components of the system are not original equipment supplied by the Manufacturer.
3. This product must be purchased from and installed by an authorized distributor or certified representative
thereof or the Warranty will be void.
4. Malfunctions or failure resulting from misuse, abuse, negligence, alteration, accident, or lack of proper
maintenance shall not be considered defects under the Warranty.
5. This Warranty applies only to systems for the care of poultry and livestock. Other applications in industry
or commerce are not covered by this Warranty.
The Manufacturer shall not be liable for any Consequential or Special Damage which any purchaser may suffer
or claim to suffer as a result of any defect in the product. “Consequential” or “Special Damages” as used herein
include, but are not limited to, lost or damaged products or goods, costs of transportation, lost sales, lost orders,
lost income, increased overhead, labor and incidental costs and operational inefficiencies.
THIS WARRANTY CONSTITUTES THE MANUFACTURER’S ENTIRE AND SOLE WARRANTY AND
THIS MANUFACTURER EXPRESSLY DISCLAIMS ANY AND ALL OTHER WARRANTIES,
INCLUDING, BUT NOT LIMITED TO, EXPRESS AND IMPLIED WARRANTIES AS TO
MERCHANTABILITY, FITNESS FOR PARTICULAR PURPOSES SOLD AND DESCRIPTION OR
QUALITY OF THE PRODUCT FURNISHED HEREUNDER.
Chore-Time Distributors are not authorized to modify or extend the terms and conditions of this Warranty in any
manner or to offer or grant any other warranties for Chore-Time products in addition to those terms expressly
stated above. An officer of CTB, Inc. must authorize any exceptions to this Warranty in writing. The Manufacturer
reserves the right to change models and specifications at any time without notice or obligation to improve previous
models.
Effective: June 2000
Chore-Time Equipment
A Division of CTB, Inc.
P.O. Box 2000 • Milford, Indiana 46542-2000 • U.S.A.
Phone (219) 658-4101 • Fax (877) 730-8825
Email: ctb@ctbinc.com • Internet: http//www.ctbinc.com

Thank You
The employees of Chore-Time Equipment would like to thank your for your recent Chore-Time purchase. If a
problem should arise, your Chore-Time distributor can supply the necessary information to help you.
2

MA842C

3261 Series Gearheads

Introduction

Introduction
The purpose of this publication is to provide the necessary information and part
numbers for field repair of gearheads.
Note:

Field repaired gearheads or gears do not have warranty coverage.

Gearhead Identification
Effective March 1, 1984, Chore-Time began stamping a three part identification code
number on the face of 3261 series gearheads. This code number is used to provide
information about the specification and capacities of the gearhead. See figure 1 and 2.
Effective July 1, 1988, Chore-Time began fastening a tag to the face of each gearhead
(instead of stamping) to provide information about the specifications and capacities
of the gearhead. See Figures 1 and 2.
1

2
2 6 84

2 1 6
3 2 6 1

6

Item
1

2

Description
Gearheads manufactured between
March 1, 1984 and July 1, 1988, will
have a code stamped here
Gearheads manufactured from
July 1, 1988 to present will have a code
tag here.

MA842-17 3/95

Figure 1. Identification Code placement

From March 1, 1984
to June 30, 1988

Item
1

3

1

4

2 6 84

2 1 6
3 2 6 1

2

6

MA842-18 3/95

2

5

From July 1, 1988
to Present

3
4
5

Description
Indicates RPM (as rated with a 1725
RPM Motor). The first digit of the
gearhead’s RPM is shown here:
0=62 RPM
1=129 RPM
2=216 RPM
3=348 RPM
Indicates series of 3261 Gearhead.
The 3261-0 series all contain a "dash
number" following the 3261. This
part of the code identifies the :dash
number" of the gearhead.
Denotes year of manufacture
Denotes RPM (based on 1725 RPM,
60 Hz Motor
Denotes Gearhead part number

This manual is designed to provide comprehensive planning, installation, safety, operation, and parts listing
information. The Table of Contents provides a convenient overview of the information in this manual. The Table
of Contents also specifies which pages contain information for the sales personnel, installer, and consumer (end
user).

MA842C

3

Gearhead Specifications Chart

3261 Series Gearheads

Gearhead Specifications Chart
The chart below profides gearhead specification information for the various
Chore-Time applications (fill systems, feeders, etc.).

Gearhead
3261-1
3261-1
3261-2
3261-5
3261-5
3261-5
3261-5
3261-6
3261-6
3261-7
3261-7
3261-7
3261-8
3261-8
3261-8
3261-9
3261-9
3261-10
3261-10
3261-10
3261-10
3261-11
3261-11

Output
Shaft Size
5/8
5/8
5/8
5/8
5/8
5/8
5/8
7/8
7/8
7/8
7/8
7/8
7/8
7/8
7/8
7/8
7/8
7/8
7/8
7/8
7/8
5/8
5/8

Pinion
Assembly*
3249
3249
3249
5046
5046
5046
5046
3249
3249
6104
5046
5046
3249
3249
3249
3249
3249
5046
5046
6104
6104
5046
5046

Motor
RPM
1425
1725
1725
1725
1425
2850
3450
1425
1725
1725
1725
1425
825
1725
1425
1425
1725
1725
1425
1725
1425
2850
1425

Motor
Hz
50
60
60
60
50
50
60
50
60
60
60
50
60
60
50
50
60
60
50
60
50
50
50

Output
RPM
180
216
129
348
290
580
696
180
216
348
348
290
62
129
104
52
62
425
348
425
348
708
348

3261-12
3261-12

7/8
7/8

25836
25836

1725
1425

60
50

78
62

3261-13
3261-13
3261-13
3261-13
3261-14
3261-14
3261-15
3261-17

7/8
7/8
7/8
7/8
7/8
7/8
11/16
5/8

5046
6104
6104
5046
25836
25836
3249
5046

1725
1425
1725
1425
1425
1725
1725
1725

60
50
60
50
50
60
60
60

584
474
584
474
78
95
62
696

Primary Applications
Model C, C2, H2, G, 2000
CF & MT Cage Feeders
Model C, C2, H2, G, 2000, Pan Breeder
Adult Turkey Feeder
Model 55, 75, 90, HMC, 125, 108
Model 75, 90, HMC, 125, 108, CDS,
MULTIFLO
Model 75, 90, HMC, 125, 108, CDS, Fill
Loops
International Model 75, 90, HMC, 125, 108
MULTIFLO, Model 75, HMC
International ULTRAPAN
ULTRAFLO (cage), ULTRAFLO Fill Loop.
ULTRAFLO Breeder Feeder
Model 108, 125, HMC, 75, 90

Pan Breeder Feeder, Model C, C2, H2, G,
2000, Flag Fill Systems 55, Adult Turkey
Feeder
ULTRAFLO (cage), ULTRAFLO Fill Loop,
MULTIFLO, ULTRAPAN, ULTRAFLO
Breeder Feeder
Model 90 (special application ULTRAPAN &
ULTRAFLO Breeder Feeder)

ULTRAFLO (cage) & ULTRAPAN
Collectors and Cross Conveyors
Pan Breeder Feeder

*See Figure 3 on page 5.

4

MA842C

3261 Series Gearheads

Rebuilding Gearheads

Rebuilding Gearheads
The 3261 series of gearheads can be successfully rebuilt to give additional years of
service if the following recommendations are observed.
Disassembly:

Cleaning:

Reassembly:

All gears should be removed from the gearhead to allow the gears and bearings to be
inspected for wear and/or damage. Any gear or bearing that shows wear or damage
should be replaced.
Before reassembling the gearhead, all parts should be thoroughly cleaned in a
solvent. Particular attention should be given to the housing, bearings, and gears to
insure that all metal deposits are removed.
Replace all gaskets and Oil Seals.
Tighten the Output Shaft Nut to 60-70 ft/lbs [81.4-94.9 Nm] torque.
Check the pinion on the motor shaft to be syre it is not damaged or worn. Tighten the
setscrew.
Tighten the foru 5/16-18 hex head bolts to 140-145 in/lbs [15.8-16.4 Nm] torque in
an "x" fashion. See Figure 3.

Lubrication:

Use ISO150 gear oil or S.A.E. 40W oil. Detergent oil is preferred if it contains nonfoaming agents. Most automotive detergent oils contain non-foaming agents.
All the gearheads require 9 ounces [266 ml] of oil (except 3261-9, 3261-12, and
3261-14 which require 13.5 ounces [400 ml] of oil).

Pinion Identification
1/2" [13 mm] Dia.
3249
(18 Tooth)

1

1/2" [13 mm] Dia.

3

25836
(21 Tooth)

4

5046
(21 Tooth)

2

1/2" [13 mm] Dia.

MA842-7 3/95

5/8" [16 mm] Dia.
6104
(21 Tooth)
Figure 3. Bolt tightening sequence and Pinion Identification

MA842C

5

Two-Stage Gearhead Parts Listing

3261 Series Gearheads

Two-Stage Gearhead Parts Listing
1

2

3

17
4
3

14
5
15
16

6

12

Location of
Intermediate Gear
for 216, 348, 425,
and 584 RPM
Gearheads

13
1

Location of
Intermediate Gear
for 129 RPM
Gearheads

7
11
8

10

Item
1
2
3
4
5
6
7
**8
9
10
11
12
13
14
***15
16
17
18

Description
(Output RPM)*
Adapter (Mach)
Gasket
Flange Bearing
Intermediate
Gear Assembly
Output Gear
Output Shaft
Oil Seal
Two Row Spacer
Bearing
Housing (Mach)
5/8-11 Hex Jamb
Nut
5/16-18x5/8 Hex
Head Bolt
Oil Seal
1/8x7/16 Spirol
Pin
1/4 NPT Square
Head Plug
Thrust Washer
3/16x7/16
Vent Plug
Drain Plug

18

9

MA842-22 6/2000

3261-1
216
3174
3258
3252
24243

3261-2
129
3174
3258
3252
24244

3261-5
348
3174
3258
3252
24248

3261-6
216
3174
3258
3252
24243

Part Number
3261-7
3261-8
348
129
3174
3174
3258
3258
3252
3252
24248
24244

3261-10
425
3174
3258
3252
24752

3261-11
425
3174
3258
3252
24752

3261-13
584
3174
3258
3252
28026

3261-17
696
3174
3258
3252
40926

24198
5187
5189
5188

24198
5187
5189
5188

24197
5187
5189
5188

24198
6847
5189
5188

24197
6847
5189
5188

24198
6847
5189
5188

24751
6847
5189
5188

24751
5187
5189
5188

28027
6847
5189
5188

40925
5187
5189
5188

29886
5183

29886
5183

29886
5183

29886
5183

29886
5183

29886
5183

29886
5183

29886
5183

29886
5183

29886
5183

4412-1

4412-1

4412-1

4412-1

4412-1

4412-1

4412-1

4412-1

4412-1

4412-1

4682
2960-2

4682
2960-2

4438
2960-2

4682
2960-2

4438
2960-2

4682
2960-2

4438
2960-2

4438
2960-2

4438
2960-2

4438
2960-2

2755

2755

2755

2755

2755

2755

2755

2755

2755

2755

2112-3
3523
30160

2112-3
3523
30160

2955-33
2112-3
2112-3
3523
3523
30160
30160

2955-33
2112-3
3523
30160

2112-3
3523
30160

2955-33
2112-3
3523
30160

2955-33
2112-3
3523
30160

2955-33
2112-3
3523
30160

2955-33
2112-3
3523
30160

*Output speeds are based on 60 Hz. 1725 RPM Motor.
**5186 is a 6-piece precision ground, matched set. Components should not be mixed (old and new).
***All helical gear units (-5, -7) should be updated to include a 2933-33 Thrust Washer.
6

MA842C

3261 Series Gearheads

Three-Stage Gearhead Parts Listing

Three-Stage Gearhead Parts Listing
1
2

17

3
X X X
3 2 6 1

X

3
14

16
6
12

18
4
7

11
8
5
10

Item
1
2
3
4
5
6
7
**8
9
10
11
12
13
14
15
16
17
18

15

Description
(Output RPM)*
Adapter (Mach)
Gasket
Flange Bearing
Intermediate Gear Assembly
Output Gear
Output Shaft
Oil Seal
Two Row Spacer Bearing
Housing (Mach)
5/8-11 Hex Jamb Nut
5/16-18x5/8 Hex Head Bolt
Oil Seal
1/8x7/16 Spirol Pin
1/4 NPT Square Head Plug
Drain Plug
3/16x7/16
Vent Plug
Intermediate Gear Assembly

9

13

3261-9
62
14492
3258
3252
24241
24197
6847
5189
5188
29886
5183
2150
4682
2960-2
2755
30160
2112-3
3523
24242

Part Number
3261-12 3261-14
78
95
14492
14492
3258
3258
3252
3252
25834
25834
24197
28720
6847
6847
5189
5189
5188
5188
29886
29886
5183
5183
2150
2150
4438
4438
2960-2
2960-2
2755
2755
30160
30160
2112-3
2112-3
3523
3523
24242
28722

842-23 6/2000

3261-15
62
14492
3258
3252
24241
24197
35954
5189
5188
29886
5183
2150
4682
2960-2
2755
30160
2112-3
3523
24242

*Output speeds are based on 60 Hz. 1725 RPM Motor.
**5186 is a 6-piece precision ground, matched set. Components should not be mixed (old and new).

MA842C

7

Three-Stage Gearhead Parts Listing

3261 Series Gearheads

Made to work.
Built to last.

Revisions to this Manual
Page No.

Description of Change
Removed "R" suffix from all part numbers
Added -15 and -17 Gearheads

Contact your nearby Chore-Time distributor or representative for additional parts and information.

CTB Inc.
P.O. Box 2000 • Milford, Indiana 46542-2000 • U.S.A.
Phone (219) 658-4101 • Fax (877) 730-8825
E-Mail: ctb@ctbinc.com • Internet: http//www.ctbinc.com

Printed in the U.S.A.

8

MA842C



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