Page 10 - Technical Guide

ProSteering®

Identifying
TRW
TAS/THP
type
gears

Gear
part
number

The
gear
part
number
or
gear
spec
is
pin
stamped
or
stenciled
on
a
machined
surface
on

the
opposite
end
of
the
input
shaft.

For
TRW
type
gears
this
is
the
most
accurate
method

to
correctly
identify
the
gear
part
number.

If
all
characters
are
legible
refer
back
to
the

ProSteering
application
guide
to
determine
the
exact
PSG
steering
gear
number.

EX:

TAS55001

Product
Family
Gear
ID

40
001-­‐050

TAS
55
001-­‐020

65
001-­‐250

85
001-­‐175

THP
45
001-­‐010

60
001-­‐050

Gear
housing
casting
number

When
the
stenciled
gear
part
number
is
unreadable
locate
the
casting
housing

number
on
the
cast
iron
gear
housing.

This
number
begins
with
the
product
family
ID

(i.e.,
TAS55)
followed
by
four
digits.

The
first
of
these
four
digits
is
always
a
‘2’.

EX:

TAS552299

NOTE:

US
patent
numbers
are
also
embossed
in
the
gear

housing
(i.e.,
4942203).

These
numbers
will
not
help
identify

the
gear
part
number.

Once
you
have
the
casting
number
along
with
the
make,

model,
and
year
of
the
vehicle
use
our
application
guide
to

verify
the
correct
PSG
number.

Since
we
are
using
the
gear

housing
number
to
identify
the
gear
instead
of
the
ID
pad
it
is

important
to
verify
the
#
of
lines
and
relief
valve
option

discussed
in
the
following
sections
of
this
manual.

10
150416_TECHNICAL
GUIDE