2009/06/29 Correction to Specifications , "Lockup Clutch and Solenoid Valve (Torque Converter)" {3124, 5479} Caterpillar

Underground Articulated Truck:

AD45B (S/N: CXM1-UP)

AD55 (S/N: ANW1-UP)

AD55 (S/N: DNW1-UP)

Specifications, RENR8566, "AD45B Underground Articulated Truck Power Train", "Lockup Clutch and Solenoid Valve (Torque Converter)". This module is part of Service Manual, RENR8538 Volume I.Specifications, RENR4712, "AD55 Underground Articulated Truck Power Train", "Lockup Clutch and Solenoid Valve (Torque Converter)". This module is part of Service Manual, RENR4735 Volume I.Specifications, RENR4712, "AD55 Underground Articulated Truck Power Train", "Lockup Clutch and Solenoid Valve (Torque Converter)". This module is part of Service Manual, RENR7850 Volume I.

The information for the above modules has changed. Replace the information with the following information.

Lockup Clutch and Solenoid Valve (Torque Converter)

Illustration 1	g00507617
Bottom View

Illustration 2	g00507618
Section A-A

Illustration 3	g00507619
Section B-B

Show/hide table

NOTICE
Do not use caustic (corrosive) materials to clean any parts in this valve group. Caustic material will cause corrosion and damage to parts.

Pressures at low idle speed on a machine:

Pilot pressure for the lockup clutch ... 1725 ± 70 kPa (250 ± 10 psi)

Maximum pressure for the lockup clutch ... 1720 ± 70 kPa (249 ± 10 psi)

Primary pressure for the lockup clutch ... 960 ± 35 kPa (139 ± 5 psi)

(1) Torque for nut ... 9.0 ± 0.5 N·m (79.7 ± 4.4 lb in)

(2) Refer to Specifications, "Solenoid Valve (Lockup Clutch)".

Installation torque ... 80 ± 5 N·m (59 ± 4 lb ft)

(3) 8J-4452 Shim

Thickness of shim ... 0.12 mm (0.005 inch)

Pressure change with one shim ... 10 kPa (1.5 psi)

2S-0675 Spacer

Thickness of spacer ... 0.40 mm (0.016 inch)

Pressure change with one shim ... 32 kPa (4.7 psi)

9J-1330 Shim

Thickness of shim ... 0.79 mm (0.031 inch)

Pressure change with one shim ... 62 kPa (9.0 psi)

(4) 8E-6144 Spring (outer)

Color code ... All White

Length under test force ... 79.0 mm (3.11 inch)

Test force ... 141.4 ± 9.0 N (31.8 ± 2.0 lb)

Free length after test ... 95.8 mm (3.77 inch)

Outside diameter ... 14.8 mm (0.58 inch)

(5) 6Y-7267 Spring (inner)

Color code ... All Red

Length under test force ... 65.0 mm (2.56 inch)

Test force ... 55.3 ± 2.8 N (12.4 ± 0.6 lb)

Free length after test ... 96.1 mm (3.78 inch)

Outside diameter ... 8.1 mm (0.32 inch)

(6) 8P-9739 Cascade Orifice

Thickness of orifice ... 6.50 mm (0.256 inch)

(7) Torque for four bolts ... 30 ± 7 N·m (22 ± 5 lb ft)

(8) 9D-7884 Spring

Length under test force ... 18.5 mm (0.73 inch)

Test force ... 161.5 N (36.3 lb)

Free length after test ... 23.9 mm (0.94 inch)

Outside diameter ... 15.7 mm (0.62 inch)

(9) 4M-2381 Spring

Length under test force ... 12.2 mm (0.48 inch)

Test force ... 2.31 ± 0.18 N (0.52 ± 0.04 lb)

Free length after test ... 22.6 mm (0.89 inch)

Outside diameter ... 7.6 mm (0.30 inch)

(10) 9P-0683 Spring

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

Test force ... 35.6 ± 2.8 N (8.0 ± 0.6 lb)

Free length after test ... 66.0 mm (2.60 inch)

Outside diameter ... 21.4 mm (0.84 inch)

(11) 5J-2721 Shim

Thickness of shim ... 0.13 mm (0.005 inch)

Pressure change with one shim ... 10 kPa (1.4 psi)

6J-3993 Shim

Thickness of shim ... 0.25 mm (0.010 inch)

Pressure change with one shim ... 19 kPa (2.8 psi)

5J-1036 Shim

Thickness of shim ... 0.8 mm (0.031 inch)

Pressure change with one shim ... 60 kPa (8.7 psi)

(12) 9W-7410 Spring

Color code ... three light blue stripes

First test

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

Test force ... 78.3 ± 3.9 N (17.6 ± 0.9 lb)

Second test

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

Test force ... 237.3 ± 8.7 N (53.4 ± 2.0 lb)

Free length after test ... 87.63 mm (3.450 inch)

Outside diameter ... 14.73 mm (0.580 inch)

(13) Torque for two bolts ... 30 ± 7 N·m (22 ± 5 lb ft)