Elliott ET850 Series Manual

www.elliott-tool.com
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ET850 Series
Torque Controlled Pneumatic Rolling Motors
Operating and Maintenance Instructions

TABLE OF CONTENTS
Introduction .......................................................................................................... 4
Safety Guidelines ................................................................................................. 5
Operation Instructions.......................................................................................... 7
Technical Information ........................................................................................... 8
Parts Lists & Diagrams ......................................................................................... 9
Maintenance Instructions ................................................................................... 17
Warranty ............................................................................................................. 19

4 ET850 Pneumatic Rolling Motors
INTRODUCTION
Thank you for purchasing this Elliott product. More than 100 years of experience have been employed
in the design and manufacture of this control, representing the highest standard of quality, value and
durability. Elliott tools have proven themselves in thousands of hours of trouble-free eld operation.
If this is your rst Elliott purchase, welcome to our company; our products are our ambassadors.
If this is a repeat purchase, you can rest assured that the same value you have received in the past
will continue with all of your purchases, now and in the future.
Elliott’s ET850 Torque Controlled Pneumatic Rolling Motor has been designed for the following types
of equipment:
Heat Exchangers
Chillers
Fin Fan Coolers
Other Heat Transfer Vessels
If you have any questions regarding this product, manual or operating instructions, please call Elliott
at [phone] toll free (USA only) or [phone], or fax us at [phone]
for immediate service.

ET850 Pneumatic Rolling Motors 5
SAFETY GUIDELINES
Read and save all instructions. Before use, be sure everyone using this machine reads and
understands this manual, as well as any labels packaged with or attached to the machine.
• Know Your Elliott Tool. Read this manual carefully to learn your tool’s application and
limitations as well as the potential hazards specic to this tool.
• Avoid Dangerous Environments. Do not use power tools in damp or wet locations
• Keep Work Area Clean and Well Lit. Cluttered, dark work areas invite accidents.
• Dress Properly. Do not wear loose clothing or jewelry. Wear a protective hair covering
to contain long hair. It is recommended that the operator wear safety glasses with
side shields or a full face shield eye protection. Gloves and water repellent, nonskid
footwear are also recommended. Keep hands and gloves away from moving parts.
• Use Safety Equipment. Everyone in the work area should wear safety goggles or
glasses with side shields complying with current safety standards. Wear hearing
protection during extended use, respirator for a conned space and a dust mask for
dusty operations. Hard hats, face shields, safety shoes, respirators, etc. should be
used when specied or necessary. Keep a re extinguisher nearby.
• Before tool is connected to pressurized air, check that the throttle operates freely in
both directions and returns to the “OFF” position when released. Before changing
sockets or performing service on the motor, make sure that the air line is shut off and
drained to prevent operation if the throttle is engaged.
• Use The Right Tools. Do not force a tool or attachment to do a job or operate at a
speed it was not designed for.
• Use Proper Accessories. Use Elliott accessories only. Be sure accessories are properly
installed and maintained.
• Check for Damaged Parts. Inspect guards and other parts before use. Check for
misalignment, binding of moving parts, improper mounting, broken parts or any other
conditions that may affect operation. If abnormal noise or vibration occurs, turn the
tool off immediately and have the problem corrected before further use. Do not use a
damaged tool. Tag damaged tools “Do Not Use” until repaired. A damaged part should
CAUTION
!
CAUTION
!
Caution: Impact resistant eye protection must be
worn while operating or working near this tool.
Caution: Personal hearing protection is highly
recommended when operating or working near
this tool.

6 ET850 Pneumatic Rolling Motors
be properly repaired or replaced by an Elliott service facility. For all repairs, insist on
only identical replacement parts.
• Keep Hands Away from All Moving Parts.
• Do Not Overreach. Maintain Control. Keep proper footing and balance at all times.
• Stay Alert. Watch what you are doing, and use common sense. DO NOT use a
tool when you are tired, distracted or under the inuence of drugs, alcohol or any
medication causing decreased control.
• Maintain Tool Carefully. Keep tools clean for best and safest performance. Follow
instructions for lubrication, maintenance and changing accessories.
• Maintain Labels and Nameplates. These carry important information and will assist you
in ordering spare and replacement parts. If unreadable or missing, contact an Elliott
service facility for a replacement.
• Some individuals are susceptible to disorders of the hands and arms when exposed to
task which involve highly repetitive motions or vibration. Those individuals predisposed
to vasculatory or circulation problems may be particularly susceptible. Cumulative
trauma disorders such as Carpal Tunnel Syndrome and Tendonitis can be caused
by repetitions, forceful exertions of the hands and arms. These disorders develop
gradually over periods of weeks, months and years.
• Tasks should be performed in such a manner that the wrists are maintained in a neutral
position, which is not exed, hyper extended, or turned side to side.
• Stressful postures should be avoided and can be controlled through tool selection and
work location. Any user suffering from prolonged symptoms of tingling, numbness,
clumsiness or weakened grip, nocturnal pain in the hand or any other disorder of the
shoulders, arms, wrists or ngers is advised to consult with a physician.
• The following recommendations will help reduce or moderate the effects of repetitive
work motions and/or extended vibration exposure.
a.) Use a minimum hand grip force consistent with proper control and safe operation.
b.) Keep body and hands warm and dry.
c.) Avoid anything that inhibits blood circulation (ie. Smoking Tobacco, Cold
Temperatures, etc)
d.) Avoid highly repetitive movements of hands and wrists, and continuous vibration
exposure.
• Work gloves with vibration reducing liners and wrist supports are available from some
manufactures of industrial work gloves. Tool wraps and grips are also available from
a number of different manufacturers. WARNING! Proper t gloves are important.
Improperly tted gloves may restrict blood ow to the ngers and can substantially
reduce grip strength.
SAFETY GUIDELINES

ET850 Pneumatic Rolling Motors 7
OPERATION INSTRUCTIONS
The ET850 is a push-pull type torque controlled rolling motor. It is designed for use with regulated,
ltered and lubricated 90 psig air (measured at the tool inlet). The tool expands to a preset torque, and
then stops. The handle is then pulled away from the tubesheet, operating the motor in reverse and
allowing tool removal from the tubesheet. Any time the operator releases the handle, the motor stops.
Air Supply
The tool is designed to operate on 90-125 psig maximum air pressure. Optimal range is 90-100 psig.
Using 100-125 psig will increase speed but may result in faster wear of expander consumables. The
air pressure should be checked at the tool’s inlet when the tool is running. An automatic in-line lter-
lubricator is required. This will supply tool with clean, lubricated air for optimal performance and tool
life.
The air hose should be cleared of accumulated dirt and moisture. Then pour one half (1/2) teaspoon of
10W machine oil into the tool’s air inlet before connecting the hose to the tool. A new hose should be
similarly lubricated before placing in service. The tool should be cycled several times to disperse the
oil before rolling tubes.
Lubricating The Motor
The in-line lubricator should be regularly checked and kept lled with a good grade of SAE 10W
machine oil. Application of the tool should govern how frequently it is greased.
The gear assembly can be lubricated through an external grease tting. Using a hand-held grease
gun, apply two shots of NLGI No. 2 Moly grease roughly every four weeks. CAUTION: DO NOT OVER-
LUBRICATE. If too much grease is applied, excess grease will be forced into the motor section and
cause poor operation.
Tube Rolling Procedure
NOTE: Always clean the tube sheet hole before inserting the tubes. Use a proper size expander to
ensure that all tubes are expanded to the same wall reduction.
Set the torque setting ring of the control to the correct torque setting for the type and size of tubes
to be rolled. Insert the expander into the quick change chuck on the motor. The motor is turned on
or off by the means of a quick operating sleeve type valve. The direction of rotation of the spindle
is controlled by the position of the lever handle at the rear of the tool. Pushing forward on the lever
handle causes the spindle to turn in a clockwise direction, and pulling back on the lever handle causes
it to run in reverse. The lever handle also acts as a torque reaction handle to assist in absorbing the
torque of the tool.
CAUTION
!
Caution: If the torque control is adjusted over the maximum power output of the tool,
the torque controlled shut off will not function and the tool will operate like a stall
type tool. Also, if the tool is being operated at its upper torque limits, a drop in air
pressure could cause the torque controlled shut off not to function due to a loss of
motor power and the tool will function like a stall type tool. Operational Check: Grip
tool securely and be prepared to counteract stall torque in case the torque control is
improperly adjusted.

8 ET850 Pneumatic Rolling Motors
TECHNICAL INFORMATION
Operating Noise Level: 95 dBA
Spares Kit
• Shim
• Trip Spring
• Paddle Set (4)
• O-Rings
• Retaining Rings
• Radial Bearing
Tube OD
Range Motor Free Speed RPM Torque Range Weight Air Usage Air Supply Hose
Male Spindle
Drive
Standard Quick
Change Chuck Spares Kit
3/4”
(19.1mm) ET850-1250 1,100 22 - 115 in lbs
(2.5 - 13.0 Nm) 11lbs
(5.0kg)
48 cfm
(1274 l/min)
1/2”
(12mm)
3/8”
(9.5mm)
3/8” Fem Sq
(optional 1/2”
available)
ET850SK-1
1”
(25.4mm) ET850-600 500 31 - 192 in lbs
(3.5 - 21.7 Nm) ET850SK-2
*Tube size range may vary due to tube wall thickness, material, tube sheet thickness, lubrication, operation condition, and/or operator technique.

ET850 Pneumatic Rolling Motors 9
PARTS LISTS & DIAGRAMS
Tube OD
Range Motor Free Speed RPM Torque Range Weight Air Usage Air Supply Hose
Male Spindle
Drive
Standard Quick
Change Chuck Spares Kit
3/4”
(19.1mm) ET850-1250 1,100 22 - 115 in lbs
(2.5 - 13.0 Nm) 11lbs
(5.0kg)
48 cfm
(1274 l/min)
1/2”
(12mm)
3/8”
(9.5mm)
3/8” Fem Sq
(optional 1/2”
available)
ET850SK-1
1”
(25.4mm) ET850-600 500 31 - 192 in lbs
(3.5 - 21.7 Nm) ET850SK-2
*Tube size range may vary due to tube wall thickness, material, tube sheet thickness, lubrication, operation condition, and/or operator technique.
PART NO.
SUPERSEDES
ET850-1250
ET850-1250
PART NO.
THIS DRAWING CONTAINS INFORMATION OF A
PROPRIETARY NATU RE AND IS ISSUED FOR
REFERENCE USE ONLY AND MAY NOT BE COPIED,
REPRODUCED OR USED TO MANUFACTURE ANYTHING
SHOWN HEREON WITHOUT WRITTEN PERMISSION.
ENG
CHECK
DRAW DATE TOOL NO.
CHECK DATE PART NO.
PROJECT NO.
DESCRIPTION
MAT'L SPEC MAT'L REQUIRED
HARDNES S PROCESS SPEC
FINISH
WEIGHT (LBS.) VOLUME (CU. IN.)
TOLERANCES
UNLESS OTHERWISE SPECIFIED
.XX = ±.02
.XXX = ±.005
ANGLES = ±.5°
BREAK SHARP CORNERS .030" MAX.
MACHINED SURFACES - 125 MICRO. MAX.
DIMENSIONS ENCLOSED IN PARENTHESIS
ARE FOR REFERENCE ONLY
DIAMETERS ON COMMON CENTERS
TO BE CONCENTRIC WITHIN .003" T.I.R.
DO NOT SCALE DRAWING
MARKING METHOD
M
REV ECN DATE ENG DESCRIPTION
ET850-1250
TORQUE CONTROLLED PNEUMATIC ROLLING MOTOR
PJN
EMH
9/23/2020
10/13/2020
9821
NONE
NONE NONE
NONE
11.100 515.420
NONE SEE PARTS LIST
SHEET 3 OF 3
5
2
4
3
10
11
14
12
8
24 25
26
19
17
15
18
28
27
22 2321
9
7
1
6
20
13
16
A4279 11/16/20 JAW ADD LABEL TO BOM
Item Qty
Part Number
Description
ET850-1250 ET850-600
1 1 810-037-037 Quick Change Chuck
2 1 ET8502001 ET8502002 Cam Case Sub-Assembly
3 2 P8302-109 Socket Head Cap Screw,
10-32 x 7/8”
4 4 133Q Lock Washer, #10
5 1 ET3219700 Bracket
6 2 P8302-145 Socket Head Cap Screw,
#10-32 x 5/8
7 1 41-98870A090 Key, 1/8 x 1/8 x 1/4
8 1 P8309-33 O-Ring, 1/16 x 2
9 1 580-40 Dowel Pin, 7/64 x 5/8
10 1 ET8503001 ET8503002 Gear Package Sub-Assembly
11 1 ET8501001 ET8501002 Motor Sub-Assembly
12 1 ET8501250 Motor Case
13 2 41-3867T365 1/2 NPT Plug
14 1 ETTLBL1800A Elliott Logo Label
15 1 ET850LBL1 ETT850LBL2 Serial Number Label
16 1 41-3867T364 3/8 NPT Pipe Plug
Item Qty
Part Number
Description
ET850-1250 ET850-600
17 1 ET8504000 Directional Valve / Lever
Sub-Assembly
18 1 P8302-101 Socket Head Cap Screw,
1/4-28 x 2-1/4
19 1 171AA Hex Nut, 1/4-28
20 2 133G Lock Washer, #6
21 2 P8302-76 Socket Head Cap Screw,
#6-32 x 3/8
22 1 ET3214456 Trip Cover
23 1 ET3415282 Trip Gauge
24 1 P8375-62 Retaining Ring, External, 5/8
25 1 ET3214465 Lock Nut
26 1 PC56-1792B Zerk Fitting
27 1 41-6534K433 Fitting, Male, 1/2 NPT
28 1 ET8404450 Mufer Assembly
29 1 P8369E Hex Key 1/8 (not shown)
30 1 P8369C Hex Key 5/64 (not shown)
31 1 TTP2500-300 Case (not shown)
32 1 ETTLBL4000A Case Label (not shown)

10 ET850 Pneumatic Rolling Motors
PARTS LISTS & DIAGRAMS
ET850-1250 Motor Sub-Assembly
PART NO.
SUPERSEDES
ET8501001
THIS DRAWING CONTAINS INFORMATION OF A
PROPRIETARY NATURE AND IS ISSUED FOR
REFERENCE USE ONLY AND MAY NOT BE COPIED,
REPRODUCED OR USED TO MANUFACTURE ANYTHING
SHOWN HEREON WITHOUT WRITTEN PERMISSION.
ENG
CHECK
DRAW DATE TOOL NO.
CHECK DATE PART NO.
PROJECT NO.
DESCRIPTION
MAT'L SPEC MAT'L REQUIRED
HARDNESS PROCESS SPEC
FINISH
WEIGHT (LBS.) VOLUME (CU. IN.)
TOLERANCES
UNLESS OTHERWISE SPECIFIED
.XX = ±.02
.XXX = ±.005
ANGLES = ±.5°
BREAK SHARP CORNERS .030" MAX.
MACHINED SURFACES - 125 MICRO. MAX.
DIMENSIONS ENCLOSED IN PARENTHESIS
ARE FOR REFERENCE ONLY
DIAMETERS ON COMMON CENTERS
TO BE CONCENTRIC WITHIN .003" T.I.R.
DO NOT SCALE DRAWING
MARKING METHOD
M
REV ECN DATE ENG DESCRIPTION
ET8501001
MOTOR SUB-ASSEMBLY
CED
RLT
9/3/2020
9/9/2020
ET850-1250 9821
NONE
NONE NONE
NONE
1.171 13.848
NONE SEE PARTS LIST
SHEET 2 OF 2
2
3
4
1
5
6
2
7
A4279 11/9/20 JAW BOM PADDLE TO PADDLE SET
Item Qty Part Number Description
1 1 ET3230500 Rotor
2 2 PC80R6ZZ Radial Ball Bearing
3 1 ET3215200 Front Thrust
4 1 ET3230100 Cylinder w/ Pin
5 1 ET3230200-4 Paddle Set
6 1 ET3230600 Rear Thrust
7 1 P8375-37 Retaining Ring, External

ET850 Pneumatic Rolling Motors 11
PARTS LISTS & DIAGRAMS
ET850-600 Motor Sub-Assembly
Item Qty Part Number Description
1 1 ET3230400 Rotor
2 1 PC80-6901Z Radial Ball Bearing
3 1 ET3215300 Front Thrust
4 1 ET3230100 Cylinder w/ Pin
5 1 ET3230200-4 Paddle Set
6 1 ET3230600 Rear Thrust
7 1 PC80R6ZZ Radial Ball Bearing
8 1 P8375-37 Retaining Ring, External
PART NO.
SUPERSEDES
ET8501002
THIS DRAWING CONTAINS INFORMATION OF A
PROPRIETARY NATURE AND IS ISSUED FOR
REFERENCE USE ONLY AND MAY NOT BE COPIED,
REPRODUCED OR USED TO MANUFACTURE ANYTHING
SHOWN HEREON WITHOUT WRITTEN PERMISSION.
ENG
CHECK
DRAW DATE TOOL NO.
CHECK DATE PART NO.
PROJECT NO.
DESCRIPTION
MAT'L SPEC MAT'L REQUIRED
HARDNESS PROCESS SPEC
FINISH
WEIGHT (LBS.) VOLUME (CU. IN.)
TOLERANCES
UNLESS OTHERWISE SPECIFIED
.XX = ±.02
.XXX = ±.005
ANGLES = ±.5°
BREAK SHARP CORNERS .030" MAX.
MACHINED SURFACES - 125 MICRO. MAX.
DIMENSIONS ENCLOSED IN PARENTHESIS
ARE FOR REFERENCE ONLY
DIAMETERS ON COMMON CENTERS
TO BE CONCENTRIC WITHIN .003" T.I.R.
DO NOT SCALE DRAWING
MARKING METHOD
M
REV ECN DATE ENG DESCRIPTION
ET8501002
MOTOR SUB-ASSEMBLY
CED
RLT
9/3/2020
9/9/2020
ET850-600 9821
NONE
NONE NONE
NONE
1.195 13.848
NONE SEE PARTS LIST
SHEET 2 OF 2
2
3
4
8
1
5
7
6
A4279 11/9/20 JAW BOM PADDLE TO PADDLE SET

12 ET850 Pneumatic Rolling Motors
PARTS LISTS & DIAGRAMS
ET850-1250 Cam Case Sub-Assembly
PART NO.
SUPERSEDES
ET8502001
ET8502001
PARTNO.
THIS DRAWING CONTAINS INFORMATION OF A
PROPRIETARY NATURE AND IS ISSUED FOR
REFERENCE USE ONLY AND MAY NOT BE COPIED,
REPRODUCED OR USED TO MANUFACTURE ANYTHING
SHOWN HEREON WITHOUT WRITTEN PERMISSION.
ENG
CHECK
DRAW DATE TOOL NO.
CHECK DATE PART NO.
PROJECT NO.
DESCRIPTION
MAT'L SPEC MAT'L REQUIRED
HARDNESS PROCESS SPEC
FINISH
WEIGHT (LBS.) VOLUME (CU. IN.)
TOLERANCES
UNLESS OTHERWISE SPECIFIED
.XX = ±.02
.XXX = ±.005
ANGLES = ±.5°
BREAK SHARP CORNERS .030" MAX.
MACHINED SURFACES - 125 MICRO. MAX.
DIMENSIONS ENCLOSED IN PARENTHESIS
ARE FOR REFERENCE ONLY
DIAMETERS ON COMMON CENTERS
TO BE CONCENTRIC WITHIN .003" T.I.R.
DO NOT SCALE DRAWING
MARKING METHOD
M
REV ECN DATE ENG DESCRIPTION
ET8502001
CAM CASE SUB-ASSEMBLY
CED
RLT
9/3/2020
9/9/2020
ET850-1250 9821
NONE
NONE NONE
NONE
9.414 47.447
ETCH SEE PARTS LIST
SHEET 2 OF 2
A4248 10/12/20 EMH REVISE BOM & ADD ETCH
3
15
2
14
16
1 11
12
4
18
17
6
10
8
9
7
25
29
26
27
28
13
20
19
21
22
23
24
Item Qty Part Number Description
1 1 ET3214800 Spindle
2 1 P8374-112 Retaining Ring
3 2 138C Nylon Tip Set Screw, #8-32 x 3/16
4 1 ET3214600 Cam Case
5 1 ET3215500 Pressure Pad w/ Pins
6 1 ET3215700 Spring Guide
7 1 ET3218500 Compression Spring
8 1 P8375-62 Retaining Ring, External
9 1 ET3218700 Lock Collar
10 1 128KK Cup Point Set Screw, #8-32 x 3/16
11 3 ET3218900 Compression Spring
12 15 109CA Ball, Steel, 5/32
13 1 P8374-187 Retaining Ring
14 1 P8375-50 Retaining Ring, External
15 1 ET3218400 Adjusting Nut
Item Qty Part Number Description
16 1 PC80R8ZZ Radial Ball Bearing
17 1 PC80SCE105 Radial Bearing
18 1 P1067-4 Thrust Bearing
19 1 128AY Cup Point Set Screw, #6-32 x 3/8
20 1 171T Hex Nut, #6-32
21 1 580-39 Dowel Pin, 1/8 x 7/8
22 1 ET3216100 Follower
23 1 ET3223500 Trip Spring
24 1 ET3214462 Trip
25 1 ET3219100 Operating Cam
26 1 ET3219400 Inner Retainer
27 1 ET3227600 Outer Retainer
28 1 ET3219600 Drive Cam
29 6 109DAS Ball, Stainless Steel, 3/16

ET850 Pneumatic Rolling Motors 13
PARTS LISTS & DIAGRAMS
ET850-600 Cam Case Sub-Assembly
Item Qty Part Number Description
1 1 ET3214800 Spindle
2 1 P8374-112 Retaining Ring
3 2 138C Nylon Tip Set Screw, #8-32 x 3/16
4 1 ET3214600 Cam Case
5 1 ET3215500 Pressure Pad w/ Pins
6 1 ET3215700 Spring Guide
7 1 ET3214498 Compression Spring
8 1 P8375-62 Retaining Ring, External
9 1 ET3218700 Lock Collar
10 1 128KK Cup Point Set Screw, #8-32 x 3/16
11 3 ET3218900 Compression Spring
12 15 109CA Ball, Steel, 5/32
13 1 P8374-187 Retaining Ring
14 1 P8375-50 Retaining Ring, External
15 1 ET3218400 Adjusting Nut
Item Qty Part Number Description
16 1 PC80R8ZZ Radial Ball Bearing
17 1 PC80SCE105 Radial Bearing
18 1 P1067-4 Thrust Bearing
19 1 128AY Cup Point Set Screw, #6-32 x 3/8
20 1 171T Hex Nut, #6-32
21 1 580-39 Dowel Pin, 1/8 x 7/8
22 1 ET3216100 Follower
23 1 ET3223500 Trip Spring
24 1 ET3214462 Trip
25 1 ET3219100 Operating Cam
26 1 ET3219400 Inner Retainer
27 1 ET3227600 Outer Retainer
28 1 ET3219600 Drive Cam
29 6 109DAS Ball, Stainless Steel, 3/16
PART NO.
SUPERSEDES
ET8502002
ET8502002
PARTNO.
THIS DRAWING CONTAINS INFORMATION OF A
PROPRIETARY NATURE AND IS ISSUED FOR
REFERENCE USE ONLY AND MAY NOT BE COPIED,
REPRODUCED OR USED TO MANUFACTURE ANYTHING
SHOWN HEREON WITHOUT WRITTEN PERMISSION.
ENG
CHECK
DRAW DATE TOOL NO.
CHECK DATE PART NO.
PROJECT NO.
DESCRIPTION
MAT'L SPEC MAT'L REQUIRED
HARDNESS PROCESS SPEC
FINISH
WEIGHT (LBS.) VOLUME (CU. IN.)
TOLERANCES
UNLESS OTHERWISE SPECIFIED
.XX = ±.02
.XXX = ±.005
ANGLES = ±.5°
BREAK SHARP CORNERS .030" MAX.
MACHINED SURFACES - 125 MICRO. MAX.
DIMENSIONS ENCLOSED IN PARENTHESIS
ARE FOR REFERENCE ONLY
DIAMETERS ON COMMON CENTERS
TO BE CONCENTRIC WITHIN .003" T.I.R.
DO NOT SCALE DRAWING
MARKING METHOD
M
REV ECN DATE ENG DESCRIPTION
ET8502002
CAM CASE SUB-ASSEMBLY
CED
RLT
9/3/2020
9/9/2020
ET850-600 9821
NONE
NONE NONE
NONE
9.414 47.447
ETCH SEE PARTS LIST
25
29
315
2
14
16
111
12
4
18
17
6
10
8
9
7
26
27
28
13
21
20
19
24
22
23
A4248 10/12/20 EMH REVISE BOM & ADD ETCH
SHEET 2 OF 2

14 ET850 Pneumatic Rolling Motors
PARTS LISTS & DIAGRAMS
ET850-1250 Gear Package Sub-Assembly
PART NO.
SUPERSEDES
ET8503001
ET8503001
PART NO.
THIS DRAWING CONTAINS INFORMATION OF A
PROPRIETARY NA TURE AND IS ISSUED FOR
REFERENCE USE ONLY AND MAY NOT BE COPIED,
REPRODUCED OR USED TO MANUFACTURE ANYTHING
SHOWN HEREON WITHOUT WRITTEN PERMISSION.
ENG
CHECK
DRAW DATE TOOL NO.
CHECK DATE PART NO.
PROJECT NO.
DESCRIPTION
MAT'L SPEC MAT'L REQUIRED
HARDNESS PROCESS SPEC
FINISH
WEIGHT (LBS.) VOLUME (CU. IN.)
TOLERANCES
UNLESS OTHERWISE SPECIFIED
.XX = ±.02
.XXX = ±.005
ANGLES = ±.5°
BREAK SHARP CORNERS .030" MAX.
MACHINED SURFACES - 125 MICRO. MAX.
DIMENSIONS ENCLOSED IN PARENTHESIS
ARE FOR REFERENCE ONLY
DIAMETERS ON COMMON CENTERS
TO BE CONCENTRIC WITHIN .003" T.I.R.
DO NOT SCALE DRAWING
MARKING METHOD
M
REV ECN DATE ENG DESCRIPTION
ET8503001
GEAR PKG SUB-ASSEMBLY
CED
RLT
9/2/2020
9/9/2020
ET850-1250 9821
NONE
NONE NONE
NONE
1.147 10.928
NONE SEE PARTS LIST
2
3
5
4
1
6
7
SHEET 2 OF 2
Item Qty Part Number Description
1 1 ET3216900 Output Spider
2 1 ET3219800 Bearing Support
3 1 PC80R12ZZ Radial Ball Bearing
4 2 580-38 Dowel Pin, 1/8 x 1-1/4
5 2 ET3215600 Planet Gear
6 1 ET3216400 Gear Housing
7 1 PC80R14 Radial Ball Bearing

ET850 Pneumatic Rolling Motors 15
PARTS LISTS & DIAGRAMS
ET850-600 Gear Package Sub-Assembly
Item Qty Part Number Description
1 1 ET3217000 Output Spider
2 1 P8375-62 Retaining Ring, External
3 1 PC80R10ZZ Radial Ball Bearing
4 1 ET3219900 Bearing Support
5 3 ET3164200 Planet Gear
6 3 580-24 Dowel Pin, 1/8 x 3/4
7 1 ET3216500 Gear Housing
8 2 ET3164100 Planet Gear
9 1 PC80-6906ZZ Radial Ball Bearing
10 1 ET3217100 Gear Spider
11 2 580-3 Dowel Pin, 1/8 x 1
PART NO.
SUPERSEDES
ET8503002
ET8503002
PART NO.
THIS DRAWING CONTAINS INFORMATION OF A
PROPRIETARY NA TURE AND IS ISSUED FOR
REFERENCE USE ONLY AND MAY NOT BE COPIED,
REPRODUCED OR USED TO MANUFACTURE ANYTHING
SHOWN HEREON WITHOUT WRITTEN PERMISSION.
ENG
CHECK
DRAW DATE TOOL NO.
CHECK DATE PART NO.
PROJECT NO.
DESCRIPTION
MAT'L SPEC MAT'L REQUIRED
HARDNESS PROCESS SPEC
FINISH
WEIGHT (LBS.) VOLUME (CU. IN.)
TOLERANCES
UNLESS OTHERWISE SPECIFIED
.XX = ±.02
.XXX = ±.005
ANGLES = ±.5°
BREAK SHARP CORNERS .030" MAX.
MACHINED SURFACES - 125 MICRO. MAX.
DIMENSIONS ENCLOSED IN PARENTHESIS
ARE FOR REFERENCE ONLY
DIAMETERS ON COMMON CENTERS
TO BE CONCENTRIC WITHIN .003" T.I.R.
DO NOT SCALE DRAWING
MARKING METHOD
M
REV ECN DATE ENG DESCRIPTION
ET8503002
GEAR PKG SUB-ASSEMBLY
CED
RLT
9/2/2020
9/9/2020
ET850-600 9821
NONE
NONE NONE
NONE
0.902 11.056
NONE SEE PARTS LIST
SHEET 2 OF 2
2 3 4651 8 11
7
9

16 ET850 Pneumatic Rolling Motors
PARTS LISTS & DIAGRAMS
Lever Sub-Assembly
PART NO.
SUPERSEDES
ET8504000
ET8504000
PARTNO.
THIS DRAWING CONTAINS INFORMATION OF A
PROPRIETARY NATURE AND IS ISSUED FOR
REFERENCE USE ONLY AND MAY NOT BE COPIED,
REPRODUCED OR USED TO MANUFACTURE ANYTHING
SHOWN HEREON WITHOUT WRITTEN PERMISSION.
ENG
CHECK
DRAW DATE TOOL NO.
CHECK DATE PART NO.
PROJECT NO.
DESCRIPTION
MAT'L SPEC MAT'L REQUIRED
HARDNESS PROCESS SPEC
FINISH
WEIGHT (LBS.) VOLUME (CU. IN.)
TOLERANCES
UNLESS OTHERWISE SPECIFIED
.XX = ±.02
.XXX = ±.005
ANGLES = ±.5°
BREAK SHARP CORNERS .030" MAX.
MACHINED SURFACES - 125 MICRO. MAX.
DIMENSIONS ENCLOSED IN PARENTHESIS
ARE FOR REFERENCE ONLY
DIAMETERS ON COMMON CENTERS
TO BE CONCENTRIC WITHIN .003" T.I.R.
DO NOT SCALE DRAWING
MARKING METHOD
M
REV ECN DATE ENG DESCRIPTION
ET8504000
DIRECTIONAL VALVE / LEVER SUB-ASSEMBLY
CED
RLT
9/2/2020
9/9/2020
ET850 9821
NONE
NONE NONE
NONE
2.893 102.534
NONE SEE PARTS LIST
12
13
10
8
9
11
7
1
6
4
3
5
5
2
SHEET 2 OF 2
A4315 12/21/20 VCB P8309-12A CHG'D TO P8309-016
Item Qty Part Number Description
1 1 ET8567183 Valve Spindle
2 1 P8375-43 Retaining Ring, External
3 1 ET8567184 Directional Valve
4 1 P8309-6 O-Ring, 1/16 x 5/16
5 2 P8309-021 O-Ring, 1/16 x 15/16
6 1 P8309-932 O-Ring, 0.059 x 0.295
7 1 37-71655S Compression Spring
8 1 ET8567185 Shaft Seal
9 1 P8309-016 O-Ring, 1/16 x 5/8
10 1 ET3214477 Cap
11 1 P8309-7 O-Ring, 1/16 x 3/8
12 1 ET3214486 Lever Pin
13 1 ET3214459 Lever Handle

ET850 Pneumatic Rolling Motors 17
MAINTENANCE INSTRUCTIONS
The proper performance and service life of every machine depends on how well it is maintained.
The following should become a regular routine of operations.
Shut-O Adjustment
If consistent torque cannot be maintained, check the Shut-Off Trip mechanism. Remove the Trip Cover
(pg 9) to expose the mechanism. During forward operation, the Trip abuts the Valve Spindle as shown.
This abutment should be set using the included Trip Gage as shown to 0.062” of engagement with
the Valve Spindle. This allows shut-off to occur midway through the total travel of the Trip, ensuring
repeatable torque. This procedure should be completed with the torque setting at “5”.
Cam Case Subassembly (pgs 12-13)
Remove entire assembly by removing socket head cap screws. Remove Internal Retaining Ring
(13). Carefully remove Drive Cam (28) and Operating Cam (25), avoiding loss of the bearing balls in
the assembly. Remove, clean, and examine Spindle (1). If there is wear or dimpling in the ball spline
grooves, the Spindle should be replaced. Check Bearing for wear and replace if necessary. Check
Follower (22) for wear and replace if necessary.
To reassemble, install Spindle (1) and secure with External Retaining Ring (14). Place Operating Cam
(25) on spindle and align the grooves. Place one Guide Spring (6) and ve precision 5/32” balls (12)
in each groove (due to precision, no substitution should be made). Install Ball Retainers and using
grease place two larger balls on each helical face of the Operating Cam (25). Install the Drive Cam (28)
carefully without dislodging the balls from the helical faces. Install the Internal Retaining Ring (13).
Reassembly to Motor Case requires depressing the trip to avoid interference with the Spindle until
Socket Head Cap Screws are installed.
Motor And Gear Package Subassemblies (pgs 10-11, 14-15)
After removing Cam Case Subassembly (above), slide out the Motor and Gear Package Subassembly.
Disassemble the motor by removing the Front Thrust and check for wear in the Cylinder. Inspect the
Paddles and replace if worn. To reassemble, perform the reverse ensuring proper placement and
movement of Paddles. Slide Motor into Motor Case placing the protruding pin into the locating hole in
the bottom of the Motor Case.
The ET850-600 Gear Package Subassembly is a two stage planetary gear set. Slide gears from the
Gear Case, clean, and inspect for wear. Grease gears before reassembly into Gear Case. Insert the
Gear Package Subassembly into the Motor Case and insert Dowel Pin.
WARNING
!
Warning: Remove air supply prior to disassembly or
service.

18 ET850 Pneumatic Rolling Motors
MAINTENANCE INSTRUCTIONS
The ET850-1250 Gear Package Subassembly is a planetary gear set with a stepped planet gear. Slide
gears from the Gear Case, clean, and inspect for wear. Grease gears before reassembly into Gear
Case. To reassemble, ensure marked teeth are aligned opposite each other and match the scribed
lines on the Gear Case. Insert the Gear Package Subassembly into the Motor Case and insert Dowel
Pin.
Ensure adequate lubrication of all parts during reassembly.
Safety Check
After repair or replacement of parts, servicing or prolonged storage, the tool should be checked to
verify that the Directional Valve Subassembly is functioning properly. This test should be completed
without air pressure. With Trip Cover removed, push forward on the Lever Handle. The handle and
valve should move freely and the valve should return to the “OFF” position readily when handle is
released. Then, with handle pushed forward, depress the trip by hand, to simulate reaching preset
torque. The Spindle should move forward to simulate the shut off of air. When pulling the handle back,
the Valve should move into its reverse position before the Spindle inside moves. If the Spindle moves
with the Valve in the forward position, then the motor will engage forward instead of reverse when the
handle is pulled back, which will cause over-rolling of joints.

ET850 Pneumatic Rolling Motors 19
WARRANTY
Should any part, of Seller’s own manufacture, prove to have been defective in material or workmanship
when shipped (as determined by Seller), Seller warrants that it will, at its sole option, repair or replace
said part f.o.b., point of manufacture, provided that Buyer noties, in writing, of such defect within
twelve (12) months from date of shipment from the manufacturing plant.
On request of Seller, the part claimed to be defective will be returned, transportation, insurance, taxes
and duties prepaid, to the factory where made, for inspection. Any item, which has been purchased by
Seller, is warranted only to the extent of the original manufacturer’s warranty to Seller.
Seller shall not be liable for any damages or delays caused by defective material or workmanship.
No allowance will be made for repairs or alterations made by others without Seller’s written consent or
approval. If repairs or alterations are attempted without Seller’s consent, Seller’s warranty is void.
THE WARRANTIES PROVIDED IN THE OBLIGATIONS AND LIABILITIES OF SELLER HEREUNDER,
AND THE RIGHTS AND REMEDIES OF BUYER HEREUNDER ARE EXCLUSIVE AND IN
SUBSTITUTION FOR, AND BUYER HEREBY WAIVES ALL OTHER WARRANTIES, GUARANTEES,
OBLIGATIONS, CLAIMS FOR LIABILITIES, RIGHTS AND REMEDIES, EXPRESS OR IMPLIED,
ARISING BY LAW OR OTHERWISE, INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTY
FOR MERCHANTABILITY AND FITNESS FOR PURPOSE.
Seller’s total liability is limited to the lower of the cost of repair or replacement.

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