TDI TURBO
TWIN
FROM
TECH DEVELOPMENT
Page 6
Publication T1-932
Issued May 20, 2016
preventing freezing of trapped moisture in the
starter inlet.
4.0 STARTER OPERATION
Prior to operation, check that all connections are tight
and free from leaks. Check the 1/4" NPT pipe plug or a
pressure gauge/transducer that may be connected to the
pressure port on the starter inlet.
WARNING
Do not operate the TDI
T
URBO
T
WIN
starter with air
pressure greater than the pressure rating on the
nameplate. This pressure is measured at the starter
inlet while the starter is running.
The maximum operating pressure limit is the inlet
pressure measured at the starter’s inlet pressure check
port. To check the pressure, a 1/4"NPT pipe tap
connection is provided in the inlet housing to attach a
pressure gauge. The maximum pressure assumes an
open exhaust (the standard turbine exhaust guard). The
standard exhaust guard causes no back pressure.
The static non-flowing supply pressure will always be
higher than the operating (dynamic) pressure. The
maximum pressure limit (proof pressure) that the
T100-
VE
starter housings may be subjected to is 600 PSIG
(42 BAR). System pressure that exceeds the maximum
operating limit must use a pressure reducing device to
ensure that the operating pressure limit to the
T100-VE
starter is maintained.
System static pressure that exceeds the 600 PSIG (42
BAR) limit must, in addition to pressure reducer devices,
incorporate a pressure relief valve set below 600 PSIG
(42 BAR) in the supply air line.
NOTE
For maximum life of the starter pinion and for the
protection of the engine ring gear, limit the operating
pressure to that necessary to start the engine at its most
difficult starting conditions.
All appropriate local pressure codes and pressure
limitations on other system components must be
adhered to and supersede the guidelines given in this
manual.
Consult your TDI distributor if you have exhaust
plumbing that creates back pressure and reduces starter
performance. You may be able to increase the supply
pressure to restore the lost power.
Follow the engine manufacturer’s instructions for starting
the engine.
CAUTION
The grease used in the planetary system has a shelf
life of 2 years. Therefore, if the starter is NOT
installed and operated on the engine for 2 years
after the starter is manufactured, the grease should
be replaced prior to starter operation. The
manufactured date is reflected in the starter serial
number. (Ex: 0602-0567 has a manufactured date
of February 2006.
4.1 BASIC OPERATION
The basic operation of the starter follows:
Pressurized air or natural gas is admitted to the starter’s
engagement piston chamber via the “in” control port by
opening the manual or solenoid valve. The air then
translates the starter’s piston forward allowing the pinion
to engage the engine’s ring gear.
NOTE
40 psi minimum pressure applied to the pre-engaged
piston is required to engage the pinion into the ring.
The forward movement of the piston causes the starter’s
“out” control port to open. Air is then transmitted to the
automatic pilot port (APP) on the relay valve causing the
relay valve to open.
Pressurized air or natural gas is admitted to the starter’s
turbine assembly by the opening of the relay valve. The
air expands through the turbine which produces shaft
rotation and torque. The starter motor torque causes the
engine to accelerate. The fuel and ignition systems now
fire the engine. Closing the relay valve stops the starter.
The operator may decrease starter life by the continual
operation of the starter after the engine has started. After
a successful engine start, turn the air off to the starter
immediately. Minimizing the time the starter is operating
unloaded will maximize starter life. If a start is aborted, a
restart may be attempted after the engine and the starter
has come to rest.
CAUTION
Do not engage the starter while the engine is
running.
