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Introduction
This publication contains operation and maintenance instructions for the Waterous Model TMR Reversing Transmission. Re
fer to Service Parts List SPL81121 for reference numbers when ordering repair parts. Also provide the serial number of the
TMR when placing inquiries or orders.
General Descri
tion
The TMR Reversing Transmission is designed for installa
tion in a vehicle between the main transmission and rear
axle to provide reverse vehicle motion with the main trans
mission in forward gears. In forward, power is transmitted
directly through the TMR transmission to the rear axle input
and output shafts rotating in the same direction. When in re
verse, power is transmitted through a chain drive to a coun
tershaft and then through gearing to the output shaft. The
output shaft rotates opposite the input. When the TMR trans
mission is operated in either mode, it allows the vehicle's
main transmission to be operated in any desired gear.
The chain drive is a Morse Hy-Vo®and the gears helical
type. Ball bearings are used throughout. The input and out
put shaft are available with either 1-3/4-10 SAE spline or
2-10 SAE spline.
Shifting from forward to reverse mode is through an external
lever. The design of the internal shift mechanisms is self -
locking after the shift has been completed.
Shiftin
Instructions
Vehicles with Manual Transmissions Vehicles With Automatic Transmissions
The following procedure is used for shifting the TMR
Transmission into forward or reverse.
1. Bring vehicle to a complete stop.
2. Shift main vehicle transmission into neutral.
If the shift cannot be completed due to a butt tooth condi
tion of the shift collar inside the TMR Transmission, do not
force the shift but proceed as follows:
a. With engine at low or idle speed, depress clutch
and shift vehicle main transmission into forward
gear, slowly let out the clutch to rotate propeller
shaft. This rotation will reposition the shift collar
for movement into either forward or reverse
mode.
b. After shift has been completed, depress clutch
and operate vehicle in usual manner.
1. With engine at idle speed, place automatic transmis
sion in NEUTRAL.
2. Shift TMR Transmission to desired mode.
3. If the shift cannot be completed due to a butt tooth
condition, shift automatic transmission momentarily
to REVERSE while keeping pressure on the TMR shift
lever to complete the shift.
4. Shift automatic transmission to desired gear or drive
range.
