SENDER AS 1006354 - Caterpillar

Petroleum Transmission
Note: Cat transmissions are manufactured, assembled, and tested using hydraulic diagnostic couplers. These quick disconnect couplers for checking system pressures, remain on the transmission for the convenience of the owners and service personnel. Unless otherwise stated, all quick disconnect couplers conform to "SAE J1502" standards.
Table 1
TH55-E70 and TH55-E90 Power Train Pressures
Pressure Taps Description
3 Lubrication pressure(1)
4(2) Torque Converter Inlet (optional)
5 Main Supply
6 Clutch 6
7 Clutch 5
8 Clutch 4
9 Clutch 3
10 Clutch 2
11 Clutch 1
12 Torque converter inlet
13 Lockup clutch
14 SOS sampling port (transmission controls)
15 Pump pressure port (controls)
16 SOS sampling port (torque converter)
17 Pump pressure port (torque converter)
50 Lubrication pressure(1)
(1) The proper location to check the lubrication pressure is at pressure tap (3).
(2) Optional test port (not present on all units)Note: Refer to illustrations 1, 2, and 3 for the location of the pressure taps that are listed in Table 1.
Illustration 1 g02833481
Right side view
(3) Lube pressure coupler
(4) Torque converter inlet (optional)
(5) Test Port (transmission supply pressure)
(6) Test Port (clutch 6 pressure)
(7) Test Port (clutch 5 pressure)
(8) Test Port (clutch 4 pressure)
(9) Test Port (clutch 3 pressure)
(10) Test Port (clutch 2 pressure)
(11) Test Port (clutch 1 pressure)
(12) Converter inlet pressure coupler
(13) Lockup clutch pressure coupler
(18) Rear transmission mounts and lifting eyes
(19) Converter housing lifting plate
(21) Cooler return port (SAE-32)