TH48-E80 Petroleum Transmission Caterpillar

Note: All 314-9930 Selector and Pressure Control Valve, 261-3383 Selector and Pressure Control Valve and 261-3378 Pressure Control Valve Groups should be modified per Service Magazine, SEPD1360, "Hydraulic Control Modifications for TH48-E80 Petroleum Transmission and SPF343C Pumper Transmission {3074, 3083, 3167}".

Table 1

TH48-E80 ICM Valve History
Control Group	8 Speed No Warm up Feature		7 Speed with Warm-up Feature
	258-8741		314-9942
Valve Group	261-3372	367-2223	314-9940	367-2233
Serial Numbers	1-845	846-Up	1-845	846-Up
Pressure Control Valve	261-3378	367-2179	261-3378	367-2179
Selector Valve	261-3383	375-5500	314-9930	375-5499
Manifold	261-3377	261-3377	261-3377	261-3377

Note: The valve group for serial numbers 1-845 will be identical to the valve group for serial numbers 846 and up after updating per service magazine SEPD1360.

Note: The valve group was updated to reduce clutch power and energy during the shift and increase shift speed to reduce transmission output speed drop during shifting.

Illustration 1	g03015971

(1) 9S-8001 O-Ring Plug and 238-5078 O-Ring Seal

Installation torque for 12 plugs ... 5.5 ± 1.5 N·m (49 ± 13 lb in)

(2) 9G-7131 Orifice Plug and 238-5078 O-Ring Seal

Quantity ... 1

Color Code ... Red

Orifice size ... 1.98 ± 0.05 mm (0.078 ± 0.002 inch)

Installation torque ... 5.5 ± 1.5 N·m (49 ± 13 lb in)

(3) 8P-9737 Orifice and 8M-5127 O-Ring Seal

Quantity ... 4

Orifice thickness ... 2.54 mm (.10 inch)

Orifice size ... 0.787 mm (0.031 inch)

(4) 9D-7884 Spring

Quantity ... 6

Length under test force ... 18.62 mm (.733 inch)

Test force ... 161.5 N (36.3 lb)

Free length after test ... 23.9 mm (.94 inch)

Outside diameter ... 15.786 mm (.6215 inch)

(5) 4M-2381 Spring

Quantity ... 6

Length under test force ... 12.2 mm (.48 inch)

Test force ... 2.30 ± 0.18 N (.517 ± .041 lb)

Free length after test ... 22.6 mm (.89 inch)

Outside diameter ... 7.62 mm (.300 inch)

(6) 9S-4190 O-Ring Plug and 238-5081 O-Ring Seal

Quantity ... 2

Installation torque ... 50 ± 7 N·m (37 ± 5 lb ft)

(7) 9P-0683 Spring

Quantity ... 6

Length under test force ... 25.4 mm (1.00 inch)

Test force ... 35.6 ± 2.8 N (8.0 ± .63 lb)

Free length after test ... 66.04 mm (2.600 inch)

Outside diameter ... 21.4 mm (.84 inch)

(8) 9W-7412 Spring (outer)

Quantity ... 6

Color code ... Dark Green

First test

Length under test force ... 79.5 mm (3.13 inch)

Test force ... 68 ± 3.4 N (15.29 ± .76 lb)

Second test

Length under test force ... 63.0 mm (2.48 inch)

Test force ... 313.8 ± 10.8 N (70.6 ± 2.4 lb)

Free length after test ... 84.1 mm (3.31 inch)

Outside diameter ... 14.7 mm (.58 inch)

(9) 7T-0569 Spring (inner)

Quantity ... 4

Color code ... Light Blue

Length under test force ... 63 mm (2.48 inch)

Test force ... 91.78 ± 4.6 N (20.63 ± 1.03 lb)

Free length after test ... 79.84 mm (3.14 inch)

Outside diameter ... 8.64 mm (0.34 inch)

Table 2

Shims for the Pressure Control Valve (7)
Valve Location	A	B	C	E	G	H
Clutch that is engaged	4	2	1	5	6	3
Thickness of the shim	Primary Pressure Change	Primary Pressure Change	Primary Pressure Change	Primary Pressure Change	Primary Pressure Change	Primary Pressure Change
5J-2721 Shim
0.13 mm (0.005 inch)	21 kPa (3.1 psi)	21 kPa (3.1 psi)	21 kPa (3.1 psi)	19.9 kPa (2.9 psi)	19.9 kPa (2.9 psi)	21 kPa (3.1 psi)
6J-3993 Shim.
0.025 mm (0.0010 inch)	41 kPa (5.9 psi)	41 kPa (5.9 psi)	41 kPa (5.9 psi)	38.3 kPa (5.6 psi)	36.5 kPa (5.3 psi)	41 kPa (5.9 psi)
4M-1751 Spacer
0.40 mm (0.016 inch)	65 kPa (9.4 psi)	65 kPa (9.4 psi)	65 kPa (9.4 psi)	61.2 kPa (8.9 psi)	58.4 kPa (8.5 psi)	65 kPa (9.4 psi)
5J-1036 Shim
0.80 mm (0.031 inch)	130 kPa (18.8 psi)	130 kPa (18.8 psi)	130 kPa (18.8 psi)	122.5 kPa (17.8 psi)	116.9 kPa (16.9 psi)	130 kPa (18.8 psi)

Note: The suggested starting shim thickness is 5.5 mm (0.22 inch) for station G and 8.2 mm (0.32 inch) for all other stations.

(11) 7G-5453 Spring

Quantity ... 1

Color code ... Yellow

Length under test force ... 63 mm (2.48 inch)

Test force ... 61 ± 3 N (13.71 ± 0.67 lb)

Free length after test ... 80.43 mm (3.17 inch)

Outside diameter ... 8.128 mm (0.32 inch)

(12) 9G-7132 Orifice Plug and 238-5078 O-Ring Seal

Quantity ... 5

Color code ... Green

Orifice size ... 1.57 ± 0.05 mm (0.062 ± 0.002 inch)

Installation torque ... 5.5 ± 1.5 N·m (49 ± 13 lb in)

(13) 7T-0571 Spring (inner)

Quantity ... 1

Color code ... Dark Green

Length under test force ... 63 mm (2.48 inch)

Test force ... 76.4 ± 3.8 N (17.18 ± 0.85 lb)

Free length after test ... 80.44 mm (3.17 inch)

Outside diameter ... 8.64 mm (0.34 inch)

(14) 273-3533 Orifice and 8M-5127 O-Ring Seal

Quantity ... 1

Orifice thickness ... 2.54 mm (0.100 inch)

Orifice size ... 1.1 ± 0.05 mm (0.043 ± 0.002 inch)

(15) 8P-9739 Orifice and 8M-5127 O-Ring Seal

Quantity ... 1

Orifice thickness ... 6.6 mm (0.26 inch)

Orifice size ... 0.584 mm (0.023 inch)