

This manual covers all Tecumseh Peerless
®
gear products as follows:
100 Series Differentials
MST200 Series Transaxles
300 Series Transaxles
600 Series Transaxles
601 Slow Speed Transaxle
700 Series Transmissions
700H Series Transmissions
800/801 Series Transaxles
820 Series Transmissions
900 Series Transaxles
910 Series Transaxles
T E C H N I C I A N ' S H A N D B O O K
TECUMSEH
Form No. 691218 R 3/02 Litho in U.S.A.
740045
ENGINES & TRANSMISSIONS
Tecumseh Products Company
Engine & Transmission Group
900 North Street
Grafton, WI 53024
Phone: 262-377-2700
FAX: 262-377-4485
Tecumseh Europa S.p.A.
Strada delle Cacce, 99
10135 Torino, Italy
Tel. 011 39 11 391-8411
Telefax 011 39 11 3910031
ENGINES & TRANSMISSIONS
www.TecumsehPower.com
TECUMSEH & PEERLESS
TRANSMISSION and DRIVE PRODUCTS
915/940 Series Transaxles
920 Series Transaxles
930 Series Transaxles
1000/1100 Series Right Angle/T-Drives
1200 Series Transaxles
1300 Series Transaxles
2300 Series Transaxles
2400 Series Transaxles
2500 Series Transaxles
2600 Series Transaxles
VST Transaxles
Other illustrated Tecumseh 2-Cycle Engine, 4-Cycle Engine and
Transmission manuals; booklets; and wall charts are available
through Tecumseh.
For complete listing write or call

IMPORTANT NOTICE!
SAFETY DEFINITIONS
Statements in this manual preceded by the following words
are of special significance:
or
WARNING indicates a potentially hazardous situation which
if not avoided, could result in death or serious injury.
NOTE
Refers to important information and is placed in italic type.
It is recommended that you take special notice of all items
discussed on each page and wear the appropriate safety
equipment.

TABLE OF CONTENTS
Page
CHAPTER 1
Model Overview and Terms Used ...................................................................................... 1 - 6
Lubrication Chart ..................................................................................................................... 7
Torque Values Chart ................................................................................................................ 8
Identification ............................................................................................................................. 9
Trouble Shooting Table ................................................................................................... 10 - 12
CHAPTER 2
300 Series Transaxles .......................................................................................................... 13
CHAPTER 3
600 Series Transaxles ................................................................................................... 14 - 18
601 Slow Speed Transaxle ................................................................................................... 19
CHAPTER 4
700 Series In-Line Shift Transmission ............................................................................ 21 - 25
700H Series Transmissions ........................................................................................... 26 - 29
CHAPTER 5
800/801 Series Transaxles ............................................................................................. 30 - 36
820 Series Transaxles .................................................................................................... 37 - 41
CHAPTER 6
900 Series Transaxles ................................................................................................... 42 - 46
CHAPTER 7
910 Series Transaxles .................................................................................................... 47 - 50
CHAPTER 8
915 Series / 940 Series Transaxles ............................................................................... 51 - 55
CHAPTER 9
920 Series Transaxles .................................................................................................... 56 - 60
CHAPTER 10
930 Series Transaxles .................................................................................................... 61 - 65
CHAPTER 11
MST200 Series Transaxles ............................................................................................ 66 - 70
Checking Oil Level ................................................................................................................. 71
CHAPTER 12
1200 Series Three-Speed Transaxles ............................................................................ 72 - 74
CHAPTER 13
1300 Series Hydrostatic Gear Reduction Differentials ................................................... 75 - 77
CHAPTER 14
2300 Series Four-Speed Transaxles .............................................................................. 78 - 84
CHAPTER 15
2400 Series Hydro Powered Transaxles ........................................................................ 85 - 87
CHAPTER 16
2500 Series Hydro Powered Transaxles ........................................................................ 88 - 92
CHAPTER 17
2600 Series Hydro Powered Transaxles ........................................................................ 93 - 97
CHAPTER 18
Differentials .................................................................................................................. 98 - 103
CHAPTER 19
Drives ......................................................................................................................... 104 - 108
CHAPTER 20
1100 Series Drives ..................................................................................................... 109 - 113
CHAPTER 21
Shifting Assembly ....................................................................................................... 114 - 116
Shift Key Quick Reference Guide ........................................................................................ 117
CHAPTER 22
Bearing and Bushing Service ..................................................................................... 118 - 119
CHAPTER 23
VST Troubleshooting .................................................................................................. 120 - 121
C Tecumseh Products Company
2002

1
CHAPTER 1. MODEL OVERVIEW AND TERMS USED
TECUMSEH/TRANSMISSIONS UNITS
GENERAL
Manufactured since 1945, Tecumseh/Peerless gear
products are found in many products worldwide.
Applications vary from industrial products to residential
and commercial lawn and garden equipment.
This book is intended for use by properly trained
technicians that have appropriate facilities and the proper
tools. If you are not a Tecumseh trained technician, DO
NOT attempt a repair. Consult an Authorized Tecumseh
Servicing Dealer.
IDENTIFICATION OF MODELS
All units manufactured since 1964 have identification
numbers located on an attached tag or are stamped
into the case. This information is required to obtain parts
or replacement units. We have included illustrations on
page 9 of this book to assist you in locating them.
TRANSAXLES
The term transaxle is a combination transmission and
differential in one case. Tecumseh transmissions and
transaxles are manufactured in many different gear
ratio combinations from one to seven forward speeds
with one reverse.
600 Series The 600 series is a lightweight transaxle
used in riding mowers or similar applications. The 600
series has a vertical input shaft at the top of the aluminum
case. Variations in the series (which determine the
specific model number such as 603, 603A, 609 etc.)
include:
1. Shift lever shape.
2. Axle lengths.
3. Axle machining for wheel hub attachment.
4. Axle housing variations.
5. Size of the brake shaft.
There may be other slight differences, however, these
are present as a result of product improvement which
are not options to an O.E.M. (Original Equipment
Manufacturer).
800 Series This unit has 3 to 6 speeds forward and 1
reverse. This transaxle features bronze oil impregnated
bushings with needle bearings or ball bearings on the
axles, input and output shafts.
820 Series With 2 to 6 speeds forward and 1 reverse,
this transaxle is built for heavy duty applications including
use with ground engaging attachments. Sleeved needle
bearings are used in place of oil impregnated bushings
on all shaft ends and ball bearings are standard on
the axles. The 820 also features steel cut gears for
maximum durability.
900 Series This unit is similar to the 800 series transaxle
with the added feature of 2, 3, or 4 speeds forward
and 1 reverse.
910 Series The 910 series transaxle offers a forward
and reverse unit. The speed changes with the use of a
variable-drive pulley arrangement.
915/940 Series This unit has 3 to 5 speeds forward
and 1 reverse. Reverse is gear driven instead of chain
driven and the case is contoured around the gears.
920 Series The 920 series offers 3 to 7 speeds forward
and 1 reverse. The shifter/brake shaft is similar to the
800 series shifter/brake shaft.
930 Series This unit has 3 to 7 speeds forward and 1
reverse. The transaxle is very similar to the 920 series
except the differential and shifter/brake shaft are different.
The MST Series The MST (Manual Shift Transaxle)
is a sealed unit which uses 16 oz. (473 ml) of 80W90
gear lube (part #730229B). The MST series is available
with up to 6 speeds forward and one reverse and has
a contoured case and cover.
1200 Series The distinguishing feature of the 1200
series transaxle is that the axle support housings are
pressed in from the inside of the case and cover. Therefore
they are not readily removable until the unit is completely
disassembled. The case is cast iron for rugged, longtime
use.
2300 Series Generally similar to the 1200 series
transaxle. The distinguishing features are a more massive
case and a larger shift lever opening machined area.
The obvious difference from the standpoint of application
is that these units have four speeds forward and will
be found on equipment that can be used with ground
engagement operations.
NOTE: The 1200 and 2300 series transaxles are fairly
similar in appearance, but do have recognizable
characteristics. Both of these units have cast iron
cases for rugged applications, although the 2300
series is the only unit that can be used with ground
engaging applications.

2
HYDROSTATIC GEAR REDUCTION AND
DIFFERENTIAL UNITS
GENERAL
These units do not have a transmission function
characteristic of transaxles, but rather, are designed
to reduce input speed to a suitable axle speed and
torque range. The hydrostatic units which mate to these
units perform the transmission function.
1300 Series This unit is the hydrostatic counterpart
of the three-speed forward unit (1200). It has an aluminum
casing and pressed-through axle support housings,
which is characteristic of the 1200 series. The
hydrostatic pump is made by Eaton
®
Manufacturing
and is not serviced by Tecumseh Service Dealers.
2400, 2500 & 2600 Series This series of hydrostatically
driven reduction gear and differential units can be used
in ground engaging operations such as plowing. The
hydrostatic pump is manufactured by Sundstrand
®
Corp.
TRANSMISSIONS
Transmissions manufactured by Tecumseh consist of
a shifting mechanism to take a constant input shaft
speed and reduce it to the desired output speed.
Transmissions need a belt drive or chain drive/differential
assembly to deliver power to the wheels.
700 Series This unit can be 2, 3, 4, 5 & 6 speeds
forward and 1 reverse. The brake system can be mounted
on either side of the unit.
700 “H” Series This unit is built with almost all
interchangeable parts within its two cases except with
an “H” shift pattern. This unit has 3 or 4 speeds forward
and 1 reverse.
DIFFERENTIALS
The 100 series is a self-contained differential/axle unit.
It features hardened or non-hardened axle shafts of
various lengths and is machined with many variations
for hub attachment. The case is cast aluminum and
the differential gears are sintered metal (powdered metal)
or cut steel. The differential pin is held in place by the
four retaining cap screws. Oil Lite bushings reduce
friction during differential operation. The drive sprocket
is part of the unit which, depending upon the application,
can be of several diameters in size thus having a different
number of gear teeth. This sprocket is often supplied
by the O.E.M.
ANGLE DRIVES
These units are used primarily to change the direction
of drive at the point where the working equipment
attaches. They can be assembled for right or left hand
rotation so that they can be used in various
combinations for synchronous operation.
Right Angle Drives These units consist of input shafts,
output shafts, and the beveled gearing necessary to
change the direction of power at right angles. If the
bevel gear (drive gear) on the input shaft is turned around
and moved to the other side of the case (opposite end
of the shaft), the output shaft will rotate in the opposite
direction.
A cover identifies each unit as being either a left hand
(LH) or a right hand (RH) right angle drive. The cases
and bearings are identical in both drives.
“T” Drives The “T” drive is essentially the same as
the right angle drive except that the input shaft extends
out the other side of the case to transmit power in the
same line to additional right angle drives or other
equipment.
Shafts, Couplings, Pulleys, etc. These items are
part of complete units and are used to connect angle
drives, and other attachments. The serrated couplings
match the serrations on the shafts of the angle drives
and connecting shafts.
TERMS USED
AXLE - The shaft which connects the wheel or hub to
the differential unit and transmits force back to the
wheels.
AXLE HOUSING (or AXLE SUPPORT) - An extension
of the case and cover to support the outer ends of the
axles. Because the housing is visible, it is often the
best means of distinguishing the series in question.
BEARING BLOCK (Strip) - Used to support the ring
gear of the differential.
BEVEL (on a gear) This is a chamfer or roundness of
the meshing side of the gear teeth to permit easy
shifting. For instance, with "H" shift pattern transaxles,
this is about the only allowance that can be made to
make shifting easier. Input power should be stopped
before shifting to keep these spur gears from developing
wear.
BEVEL GEAR - A gear with teeth ground on a diagonal
so that when it meshes with a second bevel gear, power
is transmitted at an angle. If the angle is 90
o
, the gear
is known as a MITER GEAR.
BEVEL PINION - The smaller of two meshed bevel
gears in a gear train.
BRAKESHAFT/SHIFTER BRAKESHAFT) - The shaft
on a unit (Transaxles or Transmission) to which a braking
system may be attached. It is usually larger in diameter
than the input shaft due to its function of taking shock
loads experienced in braking.

3
CASE - That bottom half of the gear box which contains
the shift lever , axle and brake shaft openings. The
other half is the COVER. Unit reassembly is normally
done into the case with variations listed by individual
model.
CHAMFER - In gear products, chamfers provide two
main functions. The first is to reduce gear wear at the
leading contact point as two gears mate. The second
purpose is to act as a ramp for shifter key compression
through the shift washer prior to gear engagement.
The chamfer in the washer is either stamped or
machined in.
COUNTERSHAFT - A splined shaft which hold spur
gears that are in constant mesh with shift gears and
transfer input power to the shift gears.
COUPLING - A sleeve to connect two serrated or splined
shafts in the same axial plane. Used in right angle
drive systems, 700 series, output shafts or in a
hydrostatic drive connecting the pump and motor to
the gear drive of a transaxle.
COVER - The top half of a horizontally parting gear
box such as 700,800,900 and MST models. The cover
normally contains the input shaft, bearing(s) and the
input bevel gear. The shaft may change location in
the cover based on the OEMs mounting position.
DIFFERENTIAL GEAR BOLTS - Through bolts holding
the differential parts together. The heads of these bolts
must be opposite the output shaft gear (except in the
2400 series). This is an early check to see that the
unit is being assembled correctly.
DOWEL PIN - An alignment pin used to align the case
and cover and other parts in a transmission or transaxle.
The dowel pins should be installed to hold the parts in
alignment before tightening the retaining screws. Failure
to install dowel pins first will usually lead to a unit that
binds after assembly.
DUO-TRAK™ DIFFERENTIAL (Trademark -Illinois
Tool Works) - A type of differential which increases
torque to the tractive wheel to keep it turning. However
in situations where differentiation is necessary (as in
turning), the unit acts much like a regular differential.
EQUIPMENT - The complete assembled product (riding
mower, tractor etc.) which uses of the drives listed in
this manual.
HEAD ASSEMBLY - A complete unit containing all
parts of one right angle or “T” drive assembly of a right
angle drive system. The head assembly is permanently
lubricated and sealed.
IDENTIFICATION NUMBER - See MODEL NUMBER
IDLER - A gear used in a gear train to transfer motion
or direction. The gear rotates independently of the shaft
upon which it is located.
INPUT OR INPUT SHAFT - The part of a unit which is
always connected to the drive. Its rotational speed is
dependent on the driving mechanism. The input shaft
brings power to the unit.
LIMITED SLIP DIFFERENTIAL - See DUO-
TRAK™ DIFFERENTIAL.
MITER GEAR - One of a pair of interchangeable bevel
gears with axles at right angles. Since all bevel gears
are miter gears, the terms can be the same.
MODEL NUMBER - The identifying number of a unit
which will permit selection of the proper parts to repair
that unit.
NEUTRAL SPACER - A single or split collar between
forward and reverse gears that the shift keys engage
into when the unit is in neutral.
OIL SEAL, SINGLE LIP/DOUBLE LIP - An oil seal
with one or two sealing surfaces to prevent entrance
of foreign matter and leakage of lubricant.
OIL SEAL, (SQUARE CUT O-RING)- A seal with two
external and two internal sealing surfaces. Used in
the shifter housing.
OUTPUT, OR OUTPUT SHAFT - On a transaxle, the
shaft that contains the output pinion which is in direct
mesh with and drives the differential. The output shaft
on a transmission contains the sprocket for driving
the axles. The output shaft is driven by the large OUTPUT
GEAR.
OUTPUT SHAFT GEAR - The importance of defining
this gear is to point out that it must be opposite the
differential bull gear (except the 2400 series).
GEAR REDUCTION AND DIFFERENTIAL UNIT - A
unit that reduces a high R.P.M. input speed to a suitable
axle speed without the use of a transmission. Since
there is a single gear train, there is a single input
speed to output speed ratio, however, axle speeds
are infinite, depending upon input speed.
REVERSE IDLER (915 Series) - The gear located
between the reverse gear of the countershaft and the
reverse gear of the shifter/brake shaft that allows the
drive to operate in the opposite direction.
REVERSE IDLER - A gear added to the gear train so
when in mesh, the direction of all gears driven after it
is reversed. Its number of teeth also affects the reverse
gear ratio. The center gear of the three gear cluster is
always in mesh with the REVERSE IDLER, and the
large shifter gear always shifts into it.
RIGHT ANGLE DRIVE / HEAD ASSEMBLY. The major
operating parts are a pair of miter gears. The assembly
consists of other right angle or “T” drive head assemblies
and connecting hardware.

4
SEAL - A material which prevents lubricant from leaking
past a rotating shaft. It can be a rubber or square cut
"O"-ring, a sealing-type ball bearing, or most commonly,
a rubber sealing surface encased in a metal form.
SEAL RETAINER - Found on some models of transaxles
and on right angle drives.
SHIFT COLLAR - A round collar which retains shift
keys onto the shifter/brake shaft. The shifter assembly
pin (or pins) slide into the groove on the collar to move
the shift keys.
SHIFT GEARS - The gears on the shifter/brake shaft
that are in constant mesh with the spur gears of the
counter shaft. The shift gear is engaged by the shift
keys and it's size determines the speed of output by
the axles.
SHIFT KEY - One of either two or four metal spring
steel keys, which are held in the keyways of the shifter/
brake shaft by a shift collar. The shift keys are used
to slide through the shift gears and engage the desired
gear or speed.
SHIFT KEYWAY - One of either two or four slots in
the shifter/brake shaft for the shift keys to slide through
for gear selection.
SHIFT WASHER - The shift washer provides a ramp
to gradually compress the shift key prior to engagement
with the gear. We have used two types in production;
the newer style has the chamfer stamped into the
washer. Earlier production washer’s had the chamfer
machined in.
SHIFTER ASSEMBLY - Consists of a shift rod, shift
fan, shift arms and shift pin or pins.
SHIFT LEVER - The lever by which the operator manually
changes the shifter gears to vary reduction speed ratios
in the transmission. The configuration of the lever is
variable and is often the only reason for a unit being
given a new model number.
SHIFTER FORK - A mechanical arm which is connected
to the shifter rod to position the shifter gear at an exact
spot axially along the shifter shaft.
SHIFTER GEAR, LARGE (600/2300) - This gear
transmits 1st gear, reverse gear (and 2nd gear in 4-
speed units) ratio force to the output shaft. It is beveled
on both sides.
SHIFTER GEAR, SMALL (600/2300) - This gear
transmits 2nd and 3rd (3rd and 4th in a 4-speed unit)
gear ratio force to the output shaft. It can have two
different beveled tooth diameters or it can have a beveled
spline to engage 3rd (or 4th) gear through an additional
splined shaft.
SHIFTER HOUSING (600/2300's) - This housing
contains the shift lever and must be re-installed in the
proper position to function correctly. If the housing does
not already have guide marks, scribe the shifter housing
and transmission case before removal.
SHIFTER ROD - One of two similar smooth rods of
equal length with grooves which match the fork
positioning with meshed positions of the shifter gears
and those of the three gear cluster. Each rod has a
snap ring to act as a fork stop, but can also be used
to determine how the fork is assembled to it.
SHIFTER SHAFT - A splined shaft which meshes with
the internal splines of the shifter gears, to transmit
force to the output shaft gear. On in-line transmissions
and transaxles the shaft has machined channels to
accommodate the shift keys.
SHIFTER STOP (600/2300's) - A stamped metal plate
which separates the shifter forks. The stop has a notch
cut in it which corresponds to the neutral position on
the shifter forks and rod. The shifter lever must return
the engaged fork back to neutral before it can actuate
the other fork.
SPROCKET - A geared wheel designed to turn a chain
drive. Sprocket diameters vary and are available in
different sizes for changing output ratios.
SPUR GEAR - A gear having the shaft bore and teeth
in a parallel plane.
“T” DRIVE - A right angle drive with an input shaft
extending thru the case to transmit power axially in a
second direction to the right angle output. On “T” drives
with dissimilar input and output ends, care must be
taken to insure that the parts do not run in reverse
when reassembled.
THREE GEAR CLUSTER (2300) - A three gear assembly
in mesh with the input shaft. The gears are of different
sizes to change gear ratios when meshing with the
two shifter gears.
THRUSTER RACE - A thrust washer in which the outer
edge is cupped to fit the outer diameter of a thrust
bearing. This fit positions the thrust race concentric
with the axle diameter. It further acts as a thrust washer.
THRUST WASHER - A flat polished surface separating
metals of different hardness. It also acts as a spacer
between shafts and the case and cover.
TRANSMISSION - A system of varying sized gears
in a case, some of which can be moved along a shaft
to vary the gear ratio in a unit. The net effect is to
change speeds to the rear wheel according to the type
of work being done.
UNIT - A general term for Tecumseh/Peerless
Transmission products.

5
GENERAL SERVICING PROCEDURES
The following service procedures should be understood
and practiced whenever service is needed on a
Tecumseh transmission or drive product.
It is recommended that you take
special notice of all items
discussed in this manual and wear the appropriate
safety equipment. Failure to do so may result in
death or serious injury.
Use approved safety procedures
with equipment for removal/
installation of axles, keyways and hardened shafts.
Remove all burrs and sharp edges with a honing
stone or crocus cloth before installation. Failure
to do so could result in equipment damage, death
or serious injury.
Before removing a unit (Transmission product) from
any equipment, look for and ask the customer about:
1. Loose, worn or glazed drive belts.
2. A misadjusted or badly worn clutch or belt tension.
3. Loose/lost set screws and or sheared keys in drive,
driven pulleys or axle.
4. Oil saturated drive belts or clutches.
5. Bad operating habits, such as clutch riding or not
clutching when shifting.
6. Oil leaks.
7. If possible operate the equipment to help isolate
the problem.
8. Review Service Bulletin 304.
Removal of the unit from the equipment:
1. Raise the equipment so the transmission or transaxle
is accessible. Use wood blocks to prevent
equipment from shifting. Do not use bricks, cement
or cinder blocks.
2. Visually inspect the Tecumseh unit for oil leaks, a
cracked housing, binding or rubbing of parts, or
other symptoms of malfunction.
3. Use a jack under the unit to support it’s weight
when attachments are removed.
4. Remove wheels, drive belts, pulleys, chains and
other associated equipment from the unit. Be aware
of positioning of parts. Use a scribe mark, if in
doubt, to reassemble parts quickly and accurately.
5. If the shifter lever will interfere with removal of the
unit in anyway, remove it before unit removal. These
can easily be bend out of shape.
6. Remove all attached hardware holding the
Tecumseh/Transmission unit to the equipment on
the case, cover, axle supports, brake and shifter.
7. Remove the unit from the equipment.
Preparing for disassembly of a unit:
1. Visually inspect for evidence of oil seepage,
tampering, misalignment, freedom of rotating shafts,
etc.
2. Clean the unit thoroughly of any dirt, oil and debris.
3. Remove the shift housing and drain the lubricant
from unit. Observe the old lubricant to see if metal
particles are present.
4. Check axle shafts carefully for smoothness. Use
crocus cloth or a Scotch-Bright™ pad to rub down
high spots and eliminate rust or paint from the shafts.
5. Check the model and specification number and
remember to have the exploded parts diagram
accessible during disassembly.
6. Have on hand seal protectors, drivers, shop cloths,
appropriate tools and this technicians handbook
while servicing a unit.
OIL LEAKS, SEAL AND GASKET SERVICE
Tecumseh units contain various styles and sizes of
oil seals. The function of any oil seal is to seal inward
to prevent lubricant leaks and prevent outside debris
from entering the unit. Seals can be single lipped
with the sealing edge facing inward or double lipped
sealing inside and out.
GUIDELINES TO REMEMBER
1. Other than leaking seals, gaskets and “O” rings,
leakage can occur due to a cracked case or cover,
flats on shafts, porosity (rarely, if ever), and worn
bushings and shafts.
2. Replace ALL seals/gaskets if disturbed. The small
cost of installing new seals is small in comparison
to a dissatisfied customer and the cost of rework.
3. Some seals have a "Redicoat" sealant applied,
while others may need a thin coat of RTV silicone
to the outer shell upon installation.
4. The surface over which the seal makes contact
must be free of all cuts, scratches, high spots and
rust. The shafts should be smooth, shiny and a
thin film of light oil applied. Seal protectors must
be used to clear keyways, splines, or other machined
sharp edges on the shafts.
TORQUE VALUE TROUBLESHOOTING
GUIDELINES
ALWAYS torque all fasteners to the appropriate value
as listed in Chapter 1 page 9.
Over-tightening can strip the threads in the cases or
on a fastener. It also can over-compress gaskets,
and possibly cause binding in the unit.
A cross-tightening sequence to half the torque then
finally to full torque value is a recommended procedure
to prevent comebacks (repair returns).
Under-tightening fasteners can cause oil leakage,
loosening of attaching parts, and possible shifting of
the internal parts which may bring about a complete
failure.
WARNING
WARNING

6
BASIC TESTING
The absence of binding and oil leakage are the best
indications that the unit has been properly reassembled.
Though other, more elaborate tests can be done, the
following procedures are accurate and the preferred
method for a quick check of the unit.
On an "H" shift pattern drive with the shift forks in
neutral, rotate both axle ends in the same direction.
They should turn smoothly although a little effort may
be necessary. The brake shaft should rotate whenever
the axles turn together, but in neutral, the input shaft
should not turn. By moving any shifter gear into mesh,
a greater drag should be felt on the axles, and both
the input and brakeshaft should turn. For ease in turning
the various shafts, insert a tool (such as a punch or a
socket head screw key) into the keyway, however, do
not force if the shaft is binding.
Potential reasons for binding in the unit could be:
1. Gaskets were left out on reassembly or installed
incorrectly.
2. Oil seal retainers, differential, thrust washers, shifter
stop or oil seal retainers were installed improperly.
3. The shifter assembly or spacers were installed
incorrectly.
4. Foreign matter could be blocking the gear teeth
that are in mesh.
5. The input shaft was not properly seated in the case.
6. The case and cover could be mis-aligned (dowel
pins were missing).
7. The bearing(s) do not have the lock tabs or notches
in the correct position.
For more information, consult the troubleshooting
section.
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Description
This manual covers the following transmissions:
- 100 Series Differentials
- MST200 Series Transaxles
- 300 Series Transaxles
- 600 Series Transaxles
- 601 Slow Speed Transaxle
- 700 Series Transmissions
- 700H Series Transmissions
- 800/801 Series Transaxles
- 820 Series Transmissions
- 900 Series Transaxles
- 910 Series Transaxles
- 915/940 Series Transaxles
- 920 Series Transaxles
- 930 Series Transaxles
- 1000/1100 Series Right Angle/T-Drives
- 1200 Series Transaxles
- 1300 Series Transaxles
- 2300 Series Transaxles
- 2400 Series Transaxles
- 2500 Series Transaxles
- 2600 Series Transaxles
- VST Transaxles
This manual covers all you need to know in the repair of these transmissions.