Toro 30610, 30611, 30612, 30612TE, 30718 Service Manual
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EATON MODEL 11 HYDROSTATIC TRANSMISSION REPAIR INFORMATION
Table of Contents – Page 1 of 1
PRODUCT IDENTIFICATION AND ORDERING INFORMATION
SPECIAL TOOLS TO AID IN DISASSEMBLY/REASSEMBLY
GENERAL PARTS LIST
DISASSEMBLY/REASSEMBLY
BODY/COVER--DISASSEMBLY
BODY ASSEMBLY-DISASSEMBLY
MOTOR ROTOR-DISASSEMBLY
PINTLE ASSEMBLY--REMOVAL
PINTLE ASSEMBLY--DISASSEMBLY/INSPECTION
RELIEF VALVE--REMOVAL/INSPECTION
RELIEF VALVE--INSTALLATION
DAMPENING PISTON--REMOVAL
DAMPENING PISTON--INSTALLATION
CHECK VALVE--REMOVAL
CHECK VALVE--INSTALLATION
ACCELERATION VALVES--REMOVAL
ACCELERATION VALVES--INSTALLATION
PUMP ROTOR ASSEMBLY-REMOVAL/INSPECTION
CAM RING--DISASSEMBLY/INSPECTION
CHARGE PUMP WITH BUSHING-- DIS ASS EM BL Y/INSPE CTION
CHARGE PUMP WITH BALL BEARI NG -- DISA S SEMBLY/INSPECT IO N
COVER ASSEMBLY--DISASSEMBLY/INSPECTION
COVER ASSEMBLY--REASSEMBLY
PUMP PLATE/PORT PLATE--INSTALLATION
CHARGE PUMP WITH BUSHING---INSTALLATION
CHARGE PUMP WITH BALL BEARI NG -- INST ALL ATION
CAM RING--INSTALLATION
PUMP ROTOR ASSEMBLY--INSTALLATION
PINTLE ASSEMBLY--INSTALLATION
MOTOR ROTOR ASSEMBLY--INSTALLATION
BODY ASSEMBL Y--REASSEMBLY
BODY/COVER--REASSEMBLY
START-UP PROCEDURE
TROUBLE SHOOTING INSTRUCTIONS
FLUID RECOMMENDATIONS
Eaton
Hydraulics
Division
11
Model
Eaton Hydrostatic Transmissions
Contents
Product Identification and Ordering Information
Exploded View
Part Description
Disassembly- Reassembly Procedures
Acceleration Valves-Removal
Installation
Body
Assembly-Disassembly
Reassembly
Body/Cover-Disassembly
Reassembly
Cam
Ring-Disassembly/lnspection
Installation
Charge Pump with
Charge Pump with Ball
Check Valves-Removal
Cover Assembly
(Input Shaft, Bushing,
Cover, Control Shaft) Disassembly/lnspection
Dampening Pistons-Removal
Rotor
Motor
Pintle Assembly-Removal
Pump Rotor
Pump Plate/Port Plate-Installation
Relief
Valves-Removal/Inspection
Assembly-Disassembly
Assembly-Removal/lnspection
Bushing-Disassembly/lnspection
Installation
Bearing-Disassembly/lnspection
Installation
Installation
Oil
Seal,
Resassembly
Installation
Installation
Disassembly/lnspection
Installation
Installation
Installation
5
6
7
8-2 1
11
11
8
21
8
21
12
19
12-13
17
13-14
18
10
11
14-15
15-16
10
10
8-9
20
9
9- 10
20
12
20
16
10
10
3
Start/up Procedures
Trouble Shooting
Fluid Recommendations
Copyright
1982
Eaton Corporatlon
21
22-23
24
Product Identification and Ordering Information
Refer
to
specific listing covering your Eaton
transmission. Parts listings are available from the
Hydraulics Division, Minneapolis Plant.
When ordering parts, please include the following:
Model Number
Date Code
Part Number
Part Name
Quantity of Parts
Rotation
cw
ccw
Factory Rebuild
Original Build
Date Code-A1OA Year
Model Identification
1
1 00-Model 1 1
023-Specific Unit
Configuration
Date Code-Dl 2B1
Month
Day
Month
Special
2"
center.
2 large, wide rubber bands.
5/16-18 tap.
3/16"
Two jaw bearing puller, modified slightly if necessary
fit notches in charge pump with ball bearing.
Light petroleum jelly (such as Vaseline).
Steel bar stock or piece
tools
to
aid in Disassembly/Reassembly
x
6"
x
10"
wooden block with
dia. rod 10"-12" long.
3/4”
of
wood 2" dia.
dia. hole in the
x
2%"
long.
5
to
Charge Pump with Bushing
Charge Pump with Ball Bearing
24
I
Acceleration Valves
40 9’
39
38
\ l4
.&Tw
,
&
/
I
42
6
General Parts List
Item
No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
item
Description
No.
Cap Screw, Socket Head 29
Cap Screw, Socket Head 30
Oil Seal 31
Charge Pump Body
Seal Ring, Square Cut
Roll
Carrier
Pump Plate
Port Plate
32
33
34
35
36
37
Seal Ring, Square Cut 38
Shield 39
Snap Ring
Retaining Ring
40
41
Snap Ring 42
Bearing (Input)
Cover
Button
Dowel, Pivot Pin
Drive Pin
Dowel (36 Dia. x 2” Lg.)
Input Shaft
Oil Seal
Control Shaft
Control Shaft Washer
Seal Ring, Square Cut
Pump Rotor and Ball Assembly
Pump Race
Cam Ring
43
44
45
46
47
48
49
50
51
52
53
54
55
56
Description
Cam Ring Insert
Coil Pin
(%6
Dia. x % Lg.)
Pintle -
Retaining Ring
Check Valve Body
Check Valve Ball
(%6
Dia.)
Check Valve Ball (X6 Dia.)
Relief Valve Plug
Relief Valve Spring
Acceleration Valve Ball
Acceleration Valve Body
Acceleration Valve Spring (lower)
Acceleration Valve Spring (upper)
Dowel Pin
Dampening Piston
Back-up Ring
O-ring
Motor Rotor and Ball Assembly
Output Shaft
Motor Race
Hex Head Plug
O-ring, Plug/Tube fitting
Body
Oil Seal
Sealed Bearing (output)
Flow Through Bearing (output)
Cap Screw, Socket Head
Retaining Ring
7
This parts list is for identification of parts only. To insure
the correct replacement parts for your transmission, it
will be necessary to order the replacement parts by
part number. For parts numbers, consult your supplier
for a parts list for your specific model number.
Disassembly/Reassembly
2
Separate the body from the cover.
If
the cover' does not separate easily from the body
because of' fluid seal, tap the body and/or cover with
plastic hammer to break the seal.
Important: The motor ball piston assembly must
remain intact as the ball pistons are matched to the
motor rotor.
retain the
A
large rubber band may be used to
ball
pistons in place during handling.
Body Assembly-Disassembly
Retaining
Ring
Sealed
Bearing
Fig.
1
Clean the transmission exterior thoroughly before
repairs are begun. Use a cleaning solution that will not
affect paint, gaskets, rubber seals, and plastic.
Important: When compressed air is used in
cleaning, do not expose lip seals or bearing
surfaces to high pressure.
Drain fluid from transmission.
Note:
A
2"
x
6"
x
10
wooden block with a
3/4
inch hole
in the center is recommended for a suitable
bench fixture.
Body/Cover- Disassembly
8
Open
Bearing Seal
Body
output
Shaft
Fig.
3
3
Remove the bearing retaining ring and tap or press
the output $haft inward. Drive or press the output
bearing out' from the motor body. Two types of output
shaft bearings are used on Eaton light-duty
transmissions-flow through or sealed. Sealed
bearings have an oil seal located under the bearing.
your transmission has a seal, remove it by driving or
pressing it out from the motor body.
If
1
Use a
l/4"
allen wrench to remove the two
socket head cap screws.
Fig.
2
5/16"
Fig.
4
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