Toro 55152, 55233, 55150, 55256, 74140 Service Manual
...
EATON 6, 7 HYDROSTATIC TRANSMISSION
Table of Contents – Page 1 of 1
GENERAL PARTS LIST MODEL 6 AND 7
PRODUCT IDENTIFICATION AND ORDERING INFORMATION
SPECIAL TOOLS TO AID IN DISASSEMBLY/REASSEMBLY
DISASSEMBLY/REASSEMBLY
RESERVOIR/ADAPTER—DISASSEMBLY
BODY/COVER--DISASSEMBLY
COVER--DISASSEMBLY
CAM RING--DISASSEMBLY/INSPECTION
PUMP ROTOR--REMOVAL
PINTLE ASSY.-- REMOVAL
PINTLE ASSEMBLY--DISASSEMBLY/INSPECTION
CHECK VALVE--REMOVAL
CHECK VALVE--INSTALLATION
DAMPENING PISTON--REMOVAL (MODEL 7 ONLY)
DAMPENING PISTON--INSTALLATION
MOTOR ROTOR--REMOVAL
ROTOR ASSEMBLIES--DISASSEMBLY INSPECTION
BODY--DISASSEMBLY
COVER--REASSEMBLY
CAM RING---INSTALLATION
PUMP ROTOR-INSTALLATION
PINTLE--INSTALLATION
BODY--REASSEMBLY
MOTOR ROTOR--INSTALLATION
COVER/BODY--REASSEMBLY
RESERVOIR/ADAPTER--REASSEMBLY
START-UP PROCEDURE
TROUBLE SHOOTING INSTRUCTIONS
HYDROSTATIC FLUID RECOMMENDATIONS
NO.
7-403
Eaton
r'\
Hydraulics
Division
Eaton Hydrostatic Transmissions
-
Model
6
/
7
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
29
General Parts List
Model 6 and 7
Description
Reservoir Adapter
Reservoir Cover Subassembly
Reservoir Body
Reservoir Adapter
Seal Ring
Cover Service Kit
Dowel Pin
Retaining Ring
Washer
Button (Model 7 only)
Guide Fitting Subassembly
O-Ring
Dump Valve Bracket
Spring
Seal Ring
Pump Rotor and Ball Assembly
Pump Race
Cam Ring Assembly (includes No. 17)
Piston (Model 7 only)
Back-Up Ring (Model 7 only)
O-Ring (Model 7 only)
Pintle Subassembly
Motor Rotor and Ball Assembly
Retaining Ring
Snap Ring
Bearing
Input Shaft
Seal
O-Ring
Item
No. Description
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
Nut and Gasket Subassembly
Dump Valve Shaft
Seal
Control Shaft Kit
Dowel
Cam Ring Insert
Pin
Check Valve Body
Ball
Retaining Ring
Spring
Plug Subassembly
O-Ring
Body
Seal
Bearing
Snap Ring
Retaining Ring
Spacer
Gear
Retaining Ring
Output Shaft Subassembly
Key
Motor Race
Cap Screw
O-Ring
Plug Subassembly
Plug
This list is for identification of parts only. To insure the
correct replacement parts for your transmission, it will be
necessary to order parts by part number. Consult your
supplier for a parts list for your specific model number.
3
Contents
Product Identification and Ordering Information
Exploded View
Part
Description 3
Disassembly-Reassembly Procedures
Body Assembly-Disassembly
Reassembly
Product Identification and Ordering Information
Refer to specific listing covering your Eaton
transmission. Parts listings are available from the
Hydraulics Division, Minneapolis Plant.
4
When ordering parts, please include the following:
2
9
11
Model Number
Date Code
Part Number
Part Name
Quantity of Parts
Body/Cover-Disassembly
Reassembly
Cam
Ring-Disassembly/lnspection
Installation 11
Check Valves-Removal
Installation
Cover
Dampening Pistons-Removal
Motor Rotor Assembly-Removal
Pintle Assembly-Removal
Pump Rotor Assembly-Removal
Assembly-Disassembly/Inspection
Reassembly
Disassembly/lnspection
Installation 11
4
Installation
Installation 12
Installation 11
5
11
6
7
8
5
9
8
8
8
7
7
7
Original Build
Date Code-A10A Month
-
Model Identification
600-Model
700-Model 7
023-Specific Unit
Configuration
600-023
AlOA
cw
D12B
1
v
Factory Rebuild
Date Code-D12B1
1T2E
Month
6
Rotation
cw
ccw
Reservoir/Adapter-Disassembly
Reassembly 13
Rotor
Start/up Procedures
Trouble Shooting
Fluid Recommendations
Assemblies-Disassembly/lnspection
C
Copyright
1982
Eaton Corporation
5
8
Special
13
2
14
center.
16
2 large, wide rubber bands.
Y16-18
Light petroleum jelly (such as Vaseline).
Steel bar stock or piece of wood-2” dia.
x
tools
to aid
6
x
10 wooden block with
tap.
in
Disassembly/Reassembly
Y4”
dia. hole in the
x
2%” long.
Disassembly/Reassembly
Reservoir/Adapter-Disassembly
Fig.
1
Clean the transmission exterior thoroughly before
repairs are begun. Use a cleaning solution that
affect paint, gaskets, rubber seals, and plastic.
will
not
Eaton light duty transmissions are equipped with one
two
adapters or a reservoir as shown in Fig.
1
Remove the adapter or reservoir by rotating
clockwise.
Important: The adapters and reservoir have left
hand threads.
To
remove adapter
or socket.
To
remove adapter #2 use a six point
socket.
To
remove the reservoir use a small filter or web
wrench.
2
Remove the seal ring from the cover and discard.
Note: We recommend that all seals be replaced with
new ones whenever the transmission is disassembled
and reassembled.
To
remove turn clockwise.
#1
use a six point
2.
1½”
1/2”
hex wrench
1”
hex wrench or
Body/Cover-Disassembly
of
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
in the center is recommended for a suitable bench
fixture.
Adapter
Plug
I
i
#1
I
JLl
3/4
inch hole
Reservoir
8
Seal
Fig.
3
Important: Before disassembling the transmission,
scribe a line across the cover and body to ensure
will
correct reassembly. Incorrect assembly
output shaft rotation.
change
5
Fig.
2
3
Use
1/4
inch allen wrench to remove the
screws. Where applicable, remove the dump valve
shaft.
4
Lift the cover to separate from the body.
(2)
5/16
cap
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