2002/08/26 Correction to Testing and Adjusting , "Specifications (Power Train)" {3000} Caterpillar

Off-Highway Truck:

69D (S/N: 9XS1-UP)

769D (S/N: BBB1-UP; 5SS1-UP)

771D (S/N: BCA1-UP; 6YS1-UP)

Testing and Adjusting, SENR1550, "69D and 769D Off-Highway Truck and 771D Quarry Truck Power Train", "Specifications (Power Train)". This module is part of Service Manual, SENR1545 and part of Service Manual, RENR3386.

There are currently two sections with the title "Specifications (Power Train)" in this module. One section is effective for 769D (S/N: 5SS) Off-Highway Truck, 69D (S/N: 9XS) Off-Highway Truck, and 771D (S/N: 6YS) Quarry Truck. The other section is effective for 769D (S/N: BBB) Off-Highway Truck and 771D (S/N: BCA) Quarry Truck. These sections have been combined and revised. Replace both "Specifications (Power Train)" sections with the following information.

Table 1

Shift Points At Nominal Engine Speed
Upshift	Engine Speed	Transmission Output Speed
1C to 1L	1440 ± 50	306
1L to 2	2100 ± 30	447
2 to 3	2100 ± 30	611
3 to 4	2100 ± 30	828
4 to 5	2100 ± 30	1113
5 to 6	2100 ± 30	1510
6 to 7	2100 ± 30	2036
Downshift	Engine Speed	Transmission Output Speed
7 to 6	1465 ± 30	1926
6 to 5	1465 ± 30	1420
5 to 4	1465 ± 30	1053
4 to 3	1465 ± 30	777
3 to 2	1465 ± 30	578
2 to 1L	1465 ± 30	426
1L to 1C	1300 ± 30	276

Table 2

Maximum Travel Speeds At 2100 RPM (18.00-R33 Tires)
Gear	Speed
R	14.7 km/h (9.1 mph)
1	11.2 km/h (6.9 mph)
2	15.4 km/h (9.5 mph)
3	20.8 km/h (12.9 mph)
4	28.0 km/h (17.6 mph)
5	38.0 km/h (23.6 mph)
6	51.2 km/h (31.7 mph)
7 (1)	69.4 km/h (43.1 mph)

( 1 )

This speed is not used on the 771D Quarry Trucks.

Specifications for the Torque Converter

Outlet Relief Valve

Pressure setting for the outlet relief valve ... 414 ± 34 kPa (60 ± 5 psi)

Torque converter outlet pressure at stall speed ... 414 ± 34 kPa (60 ± 5 psi)

Torque converter stall speed at operating temperature ... 1906 ± 65 rpm

Table 3

Spacer Chart For The Outlet Relief Valve
Pt. No. for the Spacers	Thickness of the Spacers	Change in Pressure as a Result of One Spacer
5M-9624 Spacer	0.25 mm (0.01 inch)	5 kPa (0.73 psi)
5M-9623 Spacer	0.90 mm (0.035 inch)	18 kPa (2.61 psi)
5M-9622 Spacer	1.60 mm (0.063 inch)	31 kPa (4.50 psi)

Inlet Relief Valve

Pressure setting for the inlet relief valve ... 955 ± 95 kPa (139 ± 14 psi)

Table 4

Spacer Chart for the Inlet Relief Valve
Pt. No. for the Spacers	Thickness of the Spacers	Change in Pressure as a result of one Spacer
145-0107 Spacer	1.6 mm (0.063 inch)	31 kPa (4.5 psi)

Parking and Secondary Brake Valve

Parking brake release pressure at high idle ... 2580 ± 200 kPa (375 ± 29 psi)

Relief valve pressure setting for the parking and secondary brake valve ... 3170 ± 100 kPa (460 ± 15 psi)

Parking Brake Release Hydraulic Filter

Pressure setting for the bypass valve ... 379 kPa (55 psi)

Lockup Clutch and Solenoid Valve

Pressure Reduction Valve

Pilot pressure at low idle ... 1725 ± 70 kPa (250 ± 10 psi)

Table 5

Chart Of Shims For The Pressure Reduction Valve
Pt. No. for the Shims	Thickness of the Shims	Change in Primary Pressure as a Result of One Shim
5J-2721 Shim	0.13 mm (0.005 inch)	10 kPa (1.5 psi)
6J-3993 Shim	0.25 mm (0.01 inch)	19 kPa (2.8 psi)
5J-1036 Shim	0.80 mm (0.031 inch)	60 kPa (8.7 psi)

Modulation Reduction Valve

Pressure at low idle ... 1720 ± 70 kPa (249 ± 10 psi)

Lockup clutch primary pressure at low idle ... 960 ± 35 kPa (139 ± 5 psi)

Table 6

Chart Of Shims For The Modulation Reduction Valve (1)
Pt. No. for the Shims	Thickness of the Shims	Change in Primary Pressure as a Result of One Shim
8J-4452 Shim	0.12 mm (0.005 inch)	10 kPa (1.4 psi)
2S-0675 Spacer	0.40 mm (0.016 inch)	32 kPa (4.6 psi)
9J-1330 Shim	0.79 mm (0.031 inch)	62 kPa (9.0 psi)

( 1 )

Before an adjustment is performed, be certain that the valve springs are not weak or broken.

Table 7

Speed	Engaged Clutches	Torque Converter Drive	Direct Drive (Engaged Lockup Clutch)
Neutral	1	X	-
Reverse	3 and 7	X	-
First Gear	2 and 6	X	X
Second Gear	1 and 6	-	X
Third Gear	3 and 6	-	X
Fourth Gear	1 and 5	-	X
Fifth Gear	3 and 5	-	X
Sixth Gear	1 and 4	-	X
Seventh Gear (2)	3 and 4	-	X

( 2 )

This speed is not used on the 771D Quarry Trucks.

Transmission

Pressure Control Valve

Table 8

Station (1)	A	B	C	E	F	G	H
Engaged Clutch	3	1	2	5	4	6	7
Type of Test	Pressure
Clutch Pressure At High Idle	1700 + 240 - 100 kPa (247 + 35 - 15 psi)	2035 + 240 - 100 kPa (295 + 35 - 15 psi)	1885 + 240 - 100 kPa (273 + 35 - 15 psi)	2015 + 240 - 100 kPa (292 + 35 - 15 psi)	1430 + 240 - 100 kPa (207 + 35 - 15 psi)	2930 + 240 - 100 kPa (425 + 35 - 15 psi)	2930 + 240 - 100 kPa (425 + 35 - 15 psi)
Primary Clutch Pressure At Low Idle	520 + 50 - 35 kPa (75 + 7 - 5 psi)	345 + 50 - 35 kPa (50 + 7 - 5 psi)	380 + 50 - 35 kPa (55 + 7 - 5 psi)	380 + 50 - 35 kPa (55 + 7 - 5 psi)	380 + 50 - 35 kPa (55 + 7 - 5 psi)	345 + 50 - 35 kPa (50 + 7 - 5 psi)	345 + 50 - 35 kPa (50 + 7 - 5 psi)

( 1 )

Station "D" is not used.

Table 9

Shims For The Pressure Control Valve Pressure Change Per Shim
Station (1)	A	B	C	E	F	G	H
Engaged Clutch	3	1	2	5	4	6	7
Thickness of Shim	Pressure Change	Pressure Change	Pressure Change	Pressure Change	Pressure Change	Pressure Change	Pressure Change
5J-2721 Shim
0.13 mm (0.005 inch)	16 kPa (2.3 psi)	14 kPa (2.0 psi)	20 kPa (2.9 psi)	17 kPa (2.5 psi)	14 kPa (2.0 psi)	17 kPa (2.5 psi)	17 kPa (2.5 psi)
6J-3993 Shim
0.25 mm (0.010 inch)	32 kPa (4.6 psi)	28 kPa (4.1 psi)	41 kPa (5.9 psi)	35 kPa (5.1 psi)	28 kPa (4.1 psi)	33 kPa (4.8 psi)	33 kPa (4.8 psi)
4M-1751 Spacer
0.41 mm (0.016 inch)	50 kPa (7.3 psi)	45 kPa (6.5 psi)	65 kPa (9.4 psi)	56 kPa (8.1 psi)	45 kPa (6.5 psi)	53 kPa (7.7 psi)	53 kPa (7.7 psi)
5J-1036 Shim
0.80 mm (0.031 inch)	98 kPa (14.2 psi)	87 kPa (12.6 psi)	125 kPa (18.2 psi)	109 kPa (15.8 psi)	87 kPa (12.6 psi)	103 kPa (14.9 psi)	103 kPa (14.9 psi)

( 1 )

Station "D" is not used.

Table 10

Specifications And Identification Of The Components Of The Pressure Control Valve
Location of the Load Piston Body (1)	A	B	C	E	F	G	H
Thickness of the Load Piston Orifice	4.58 mm (0.180 inch)	2.54 mm (0.100 inch)	4.58 mm (0.180 inch)	4.58 mm (0.180 inch)	2.54 inch (0.100 inch)	4.58 mm (0.180 inch)	4.58 mm (0.180 inch)
Color of the Outer Spring of the Load Piston	Yellow color	Light blue color	Light green color	Light green color	Yellow color	Yellow color	Yellow color
Color of the Inner Spring of the Load Piston	Light green color	Light green color	Light blue color	Orange color	Orange color	Light blue color	Light blue color
Size of the Decay Orifice	1.57 mm (0.062 inch)	1.98 mm (0.078 inch)	1.57 mm (0.062 inch)	1.98 mm (0.078 inch)	1.98 mm (0.078 inch)	1.57 mm (0.062 inch)
Color of the Decay Orifice	Green color	Red color	Green color	Red color	Red color	Green color

( 1 )

The location of the load piston body is identical to the location of the station for the valve. Station "D" is not used.

Selector and Pressure Control Valve

Relief Valve

Relief valve setting ... 2790 ± 35 kPa (405 ± 5 psi)

Maximum pressure at high idle ... 3220 ± 110 kPa (467 ± 16 psi)

Table 11

Chart Of Spacers For The Relief Valve
Pt. No. for the Spacers	Thickness of the Spacers	Change in Pressure as a Result of One Spacer
145-0105 Spacer	0.25 mm (0.010 inch)	41 kPa (6.0 psi)
145-0106 Spacer	0.90 mm (0.035 inch)	145 kPa (21.0 psi)
145-0107 Spacer	1.60 mm (0.063 inch)	261 kPa (37.9 psi)

Priority Reduction Valve

Setting of the pilot pressure for the priority reduction valve ... 1755 ± 35 kPa (255 ± 5 psi)

Table 12

Chart Of Spacers For The Priority Reduction Valve
Pt. No. for the Spacers	Thickness of the Spacers	Change in Pressure as a Result of the Spacers
5M-3492 Spacer	0.25 mm (0.010 inch)	17 kPa (2.5 psi)
7M-1397 Spacer	0.91 mm (0.036 inch)	60 kPa (8.7 psi)

Transmission Lubrication Pressure

Transmission lubrication pressure at high idle ... 172 to 276 kPa (25 to 40 psi)

Transmission lubrication pressure at low idle ... 17 to 70 kPa (2.5 to 10 psi)

Power Train Oil Filter

Pressure setting for the bypass valve ... 345 kPa (50 psi)