Eaton Electrical Automobile Parts MTR3 User Manual

Vickers®  
Overhaul Manual  
Transmissions  
Adjustable Speed Hydraulic Drives  
TR3, PTR3 and MTR3  
Series -20 Design  
Revised 9/1/87  
I-1820-S  
 
Table of Contents  
Section  
Page  
Operating Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4  
I.  
II.  
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4  
A. Mounting Position . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4  
B. Control Position . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4  
C. Coupling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4  
D. Circuit Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6  
E. Power Source . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6  
F. Load . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6  
G. Direction of Rotation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6  
3
 
Section I – Operating Characteristics  
“A” End . . . . . . . . . . . . . . . 9-cylinder, variable delivery axial  
piston type pump  
Pump Delivery:  
1800 rpm and 500 psi . . . . . . . . . . . . . . . . . . . . . . 4.7 gpm  
1200 rpm and 500 psi . . . . . . . . . . . . . . . . . . . . . . 3.1 gpm  
“B” End . . . . . . . . . . . . 9-cylinder, fixed displacement axial  
piston type motor  
Horsepower Ratings:  
Maximum input . . . . . . . . . . . . . . . . . . . 1.50 @ 1800 rpm  
Maximum output . . . . . . . . . . . . . . . . . . 1.12 @ 1750 rpm  
Port Connections  
(MTR3 & PTR3) . . . . . . . . . . . . . . . . . AND10050-8 (3/4-16)  
Pump Yoke Control . . . . . . . . . Servo, Handwheel or Lever  
Direction of Rotation . . . . . . . . . . . . . . . . . . . . . . . . . Optional  
Operating Fluid:  
Type . . . . . . . . Use petroleum oil SAE 20-20W API, MS.  
Type “A” automatic transmission oil is  
also permissible.  
Mounting Position . . . . . . . . . . . . . . . . . . . . . . . . . . . Optional  
(see nameplate)  
Capacity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9/10 quart  
Drive Connections . . . . . . . . . . . . . . . . . . . . Direct or Indirect  
Shaft Diameter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.500 in.  
Shaft Key . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1/8 in. square  
Maximum Displacement . . . . . . . 0.645 cu.in per revolution  
Maximum Gauge Pressure . . . . . . . . . . . . . . . . . . . . 500 psi  
Input (“A” End Drive) Speed:  
Maximum . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1800 rpm  
Minimum . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1200 rpm  
Output (“B” End Drive) Speed:  
Maximum . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1800 rpm  
Minimum . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100 rpm  
Section II – Installation  
Adjustable speed hydraulic drives are precision built units  
and should be treated as such. Careful attention to these  
instructions will insure that maximum service life will be  
obtained. For installation dimensions, the following drawings  
should be referred to:  
C. Coupling  
Conventional flexible couplings may be used, or these units  
may be coupled indirectly through flat or vee belts, chain  
drives or gears. If direct coupling is used (see Figure 1), the  
shafts must be aligned accurately for maximum service life.  
For indirect drive, the pulley, sheave, sprocket, or gear pitch  
diameter must be at least 2 inches.  
Model Number  
TR3  
Installation Drawing  
I-259217  
MTR3  
I-214338  
PTR3  
I-214337  
CAUTION  
Couplings or pulleys must be assembled to the  
shafts by hand. If a pulley or coupling becomes  
tight after operation, a wheel puller should be used  
to remove it. Pounding will cause damage to the  
shaft and bearings. Keys must not be pounded into  
the shaft keyways. Material can be removed by  
lapping to fit the keys to the shafts.  
A. Mounting Position  
These units can be mounted in any position, provided the  
filler cup is above the highest level of the unit (see name-  
plates). Also, in the case of the motor units, the drain line  
must be connected to the reservoir in such a manner that the  
case remains full of fluid.  
Two keys are taped to each shaft (see Figure 2). The  
stepped section keys are for units replacing -13 design units,  
which used #4 Woodruff keys. For new installations, the  
square section keys should be used.  
B. Control Position  
An optional handwheel or servo control can be mounted on  
either side of the variable speed drive or pump. (Model  
number codes for the type control and location are shown in  
Table 1.) The handwheel control can be moved to the  
opposite side of the unit if it is desired.  
4
 
Model Codes  
Transmission  
1
2
3
4
5
6
7
8
1
4
5
AEnd Control Location  
(viewed from output end)  
R Right hand  
6
7
Adjustable Speed Drive Units  
BFixed End Control  
F Fixed  
2
Nominal 3/4 HP (at 1200 rpm)  
L Left hand  
BEnd Control  
13 13/32 Cylinder Bore  
AEnd Size  
13 13/32 Cylinder Bore  
3
AEnd (Pump) Control  
H Handwheel  
D Servo  
Design  
8
V None  
Motor  
1
2
3
4
5
1
2
Motors  
3
4
Control  
F Fixed  
5
Design  
Series 3/4 HP  
Size  
13 13/32 Cylinder Bore  
Pump  
1
2
3
4
5
6
Size  
1
2
Pumps  
3
4
Control  
H Handwheel  
D Servo  
V None  
5
6
13 13/32 Cylinder Bore  
Series 3/4 HP  
Design  
Control Location (viewed from shaft  
end opposite shaft)  
R Right hand  
L Left hand  
Table 1. Model Code Breakdown  
5
 
Improved Valve Block  
Eliminates Valve Plate  
Needle Bearings  
Replace Bushing  
Heavier Snap Ring  
Improved  
Cylinder Block  
Fan Secured by Set  
Screws  
Heavier  
Snap Ring  
Pump  
End  
(A)  
Motor  
End  
(B)  
Improved  
Seal  
Improved  
Seal  
Improved Draw  
Bolt Design  
New  
Heavier  
Mounting  
Motor  
Pump  
Figure 1  
F. Load  
The maximum load which may be driven by these units is  
3/4 horsepower. The 40 inch pounds of torque output will  
equal more than 3/4 horsepower at 1800 rpm, and must be  
considered available for starting or short intervals only.  
Standard Key  
Step Key  
CAUTION  
Figure 2  
Stalling the output shaft for any length of time  
should be avoided. Pump delivery passing over the  
relief valve generates heat, which can cause  
damage to these units.  
D. Circuit Connection  
Connections between the pump and motor of the TR3 unit  
are self-contained. When the PTR3 pump and MTR3 motor  
are connected together, they should be connected in a  
closed circuit. Supercharging pressure (30 psi) is provided  
by an integral supercharging pump in the PTR3 unit. If the  
PTR3 pump is used in an open circuit, the inlet must be  
superchrged at 30 psi. The MTR3 motors can either be used  
in a closed circuit supercharged at 30 psi or in an open  
circuit with a means of maintaining 30 psi back-pressure at  
the outlet.  
G. Direction of Rotation  
Pump (input) shaft rotation can be clockwise or  
counterclockwise. The direction of motor (output shaft)  
rotation is changed by actuating the pump control to the  
other side of neutral.  
E. Power Source  
This should be an 1150-1800 rpm electric motor or  
equivalent. The source must supply 1/4 horsepower more  
than the required output.  
6
 
III Operation  
The dial calibrations (0, 25, 50, 75 and 100) represent the  
output shaft speed as a percentage of the input shaft speed.  
A. Fluid Recommendations  
Use clean petroleum oil meeting or exceeding lubricating  
qualities of SAE 20-20 W API service classification MS.  
Type Aautomatic transmission fluid is also permissible.  
D. Servo Control  
The servo control is a mechanically operated hydraulic  
booster for varying the output shaft speed with minimum  
effort (approximately 7 ounces on the control pin).  
Drain and refil the unit with new fluid every 1000 hours of  
operation or six months, whchever comes first.  
The control arm may be rotated to any position about the  
control shaft. For the most satisfactory results, the control  
arm must be located at 90° to the direction of controlling  
efforts.  
B. Start-up  
The following procedure must be followed for initial start-up  
and each time the units are drained and refilled. (See Fluid  
Recommendations)  
The control arm requires a 20° angular movement to change  
the output shaft speed from zero speed to full speed, or a  
40° angular movement from full speed in one direction to full  
speed in the opposite direction.  
1. Fill the TR3 or PTR3 unit to the bottom of the filler cup  
screen. Fill the MTR3 unit with fluid and connect the drain  
line to tank.  
The maximum angular movement of the control arm must  
not exceed 20° each side of neutral.  
2. Couple the power source to the Aend, but leave the  
Bend uncoupled.  
It is not recommended that the control arm be actuated while  
the drive is shut down. If, however, it is necessary to move  
the stroke control arm without the aid of hydraulic boost, it  
should be done slowly in order to avoid damage to the  
internal parts.  
3. Start the power source. Allow the unit to run for about  
five minutes after the output shaft begins to rotate. It may  
tank a few minutes to eliminate the air in the system.  
4. Stop the power source and couple the Bend to the  
load.  
The servo control provides the most rapid means of  
controlling speed. With an input speed of 1750 rpm, the  
control may be moved from zero to full output speed in one  
second; at 1150 rpm input speed the time required is three  
seconds. Control movement in excess of that specified may  
cause internal damage.  
5. Add fluid until the level is again at the bottom of the  
filler cup screen. The system can now be started under load  
until the fluid is next changed.  
C. Handwheel Control  
The handwheel control is a manual device for varying the  
output shaft speed from zero to full speed in either direction.  
Section IV Maintenance and Repair  
The longevity of these products is dependent upon  
environment, duty cycle, operating parameters and system  
cleanliness. Since these parameters vary from application to  
application, the ultimate user must determine and establish  
the periodic maintenance required to maximize life and  
detect potential component failure.  
For customers who have the facilities to repair these  
precision units, the parts catalogs listed below are available  
from any Vickers branch or district office.  
Model Number  
TR3  
Catalog Number  
I-3815-S  
The only maintenance required is to change the fluid every  
1000 hours or six months, whichever occurs first, and to  
maintain shaft alignment.  
MTR3  
I-1839-S  
PTR3  
I-1840-S  
When a unit requires repair, it is recommended that it be  
returned to Vickers. A stock of rebuilt exchange units is  
maintained at all Vickers branch warehouses. All rebuilt units  
carry the new unit warranty.  
7
 
   
Section V Warranty  
We warrant the articles to be free from defects in material or  
workmanship under recommended use and service. Our  
obligation under this warranty, however, is limited to repairing  
or replacing at our Omaha, Nebraska plant, any part, which  
in our judgment upon inspection, is defective as above  
stated, provided that notice of such defect is given to  
Vickers, and the article is returned to our plant, within a  
period of 90 days from the date the article is placed in  
service or a period of 180 days from the date the article is  
delivered by us, whichever period first expires. Unless  
otherwise stated on the face of our quotation or agreed by us  
in writing, the foregoing sets forth our entire liability on  
warranties, express or otherwise. In no event will we be  
liable for special or consequential damages.  
Eaton Hydraulics  
15151 Highway 5  
46 New Lane, Havant  
Hampshire PO9 2NB  
England  
Telephone: (44) 170-548-6451  
Fax: (44) 170-548-7110  
Eden Prairie, MN 55344  
Telephone: 612 937-7254  
Fax: 612 937-7130  
Form No. 00-000  
Copyright Eaton Corporation, 0000  
All rights reserved.  
Printed in U.S.A  
8
 
 

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