GUARD-BUCKET CORNER 2530067 - Caterpillar

TH48-E70 Petroleum Transmission
Table 1
Control Pressures
Port Location(1) Pressure Tap
1 Clutch 6
2 Clutch 5
3 Clutch 4
4 Clutch 3
5 Clutch 2
6 Clutch 1
9A Torque converter outlet pressure
10 Torque converter inlet pressure
11 Lockup clutch pressure
15 Planetary lubrication pressure
21 Transmission supply pressure
25A PTO lubrication pressure - transmission oil inlet)
26A PTO lubrication pressure - transmission oil outlet)
48 SOS sampling (on filter)
(1) Refer to the following Illustrations for the location of each test port.Note: Refer to Illustrations 1, 2, and 3 for the location of the pressure taps shown in Table 1.
Illustration 1 g03107960
Right side view
(1) Test port (Clutch 6 pressure)
(2) Test port (Clutch 5 pressure)
(3) Test port (Clutch 4 pressure)
(4) Test port (Clutch 3 pressure)
(5) Test port (Clutch 2 pressure)
(6) Test port (Clutch 1 pressure)
(7) Test port (transmission supply pressure)
(8) Torque converter inlet from torque converter filter and controls - SAE 24 coupling
(9) Torque converter outlet to cooler - SAE 24 coupling
(9A) Test port (torque converter outlet pressure)
(9B) Temperature sensor (torque converter outlet oil)
(10) Test port (torque converter inlet pressure)
(11) Test port (lockup clutch pressure)
(12) Breather cap and oil fill location
(13) Lifting eyes
(14) Kidney loop connector (1 5/16-12) STOR plug (No. 16 port)
(15) Test port (lubrication relief valve pressure)
(16) Lubrication relief valve (from cooler) - SAE 24 coupling
(17) PTO mount (SAE J704 8 bolt mount, CCW drive gear rotation, speed ratio 1.11:1)
(18) Pump outlet to the transmission filter - SAE 20
(19) Pump outlet to the converter filter - SAE 20
(19A) Torque converter output speed sensor
(20) Transmission housing
(21) Test port (PTO lubrication port)
(22) Hydraulic control inlet (from filter) - SAE 24 coupling
(23) Customer mounting/lifting holes, 3/4-10-2B Thd x 1.75 inch deep (34 mm) 5 holes per side
(24) Lifting eye ( 35 mm (1.38 inch) 1 hole per side
(25) Transmission oil inlet (from the cooler) - SAE 24 coupling
(25A) Test port (PTO lubrication port)
(26) Transmission oil outlet (to the torque converter) - SAE 24 coupling
(26A) Test port (PTO lubrication port)
Illustration 2 g03108878
Left side view
(9A) Test port (torque converter outlet pressure)
(10) Test port (torque converter inlet pressure)
(27) Torque converter control valve
(28) Customer connector
(29) Diagnostic connector
(29A) Product Link connection
(30) Transmission control tower
(31) Transmission output speed sensor
(32) Output flange
(33) Kidney loop connector (1 5/16 STOR) drain plug (No. 16 port)
(33A) Inspection cover for pump suction screen and magnet
(34) ECM (electronic control module)
(35) Oil level sight gauge for the transmission
(36) Torque converter housing
(37) PTO mount (SAE J704 8 bolt mount, CW drive gear rotation, speed ratio 1.09:1)
Illustration 3 g03109038
Right side view
(38) Transmission output speed sensor (provided for customer use)
(39) Lockup clutch solenoid
(40) PTO mount (SAE J704 8 bolt mount, CW drive gear rotation, speed ratio 1.09:1)
(41) SAE "0" engine to transmission mounting
(42) Transmission charge section of the gear pump
(43) Torque converter section of the gear pump
(44) Drain plug (1 5/16-12 STOR) (No. 16 port)
(45) Customer mounting hole 25.4 mm (1.00 inch) one hole each side
(46) Kidney loop connector (1 5/16-12 STOR) drain plug (No. 16 port)
(46A) 9/16-18 STOR plug (No. 6 port)
(47) Appropriate location for the transmission oil heater (2 1/2 inch STOR plug) (No. 32 port)
Illustration 4 g03109096
Transmission planetary and torque converter remote mount