D7R Series II Track-Type Tractor Power Train Caterpillar

Pressure Charts

Usage:

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Table 1
Power Train Oil System
Actuating Control		Parking Brake Switch	Parking Brake Switch	Parking Brake Switch	Service Brake Pedal
Brakes		Engaged	Disengaged	Disengaged	Engaged
Engine Speed
	STD Arrangement XR Arrangement LGP Arrangement	800 ± 30 rpm ⁽¹⁾ 800 ± 30 rpm ⁽¹⁾ 800 ± 30 rpm ⁽¹⁾	800 ± 30 rpm ⁽¹⁾ 800 ± 30 rpm ⁽¹⁾ 800 ± 30 rpm ⁽¹⁾	2245 ± 30 rpm - 2245 ± 30 rpm	2245 ± 30 rpm - 2245 ± 30 rpm
Transmission Gear		Neutral	Neutral	Neutral	Neutral
Power Train Oil		SAE 30	SAE 30	SAE 30	SAE 30

Tap	Component	Pressures
A	Brake lubrication (rear port on left side)	Minimum 7 kPa (1 psi)	Minimum 7 kPa (1 psi)	90 ± 28 kPa (13 ± 4 psi)	90 ± 28 kPa (13 ± 4 psi)
B	Pump drive lubrication	210 ± 70 kPa (30 ± 10 psi)	210 ± 70 kPa (30 ± 10 psi)	310 ± 140 kPa (45 ± 20 psi)	310 ± 140 kPa (45 ± 20 psi)
C	Torque converter inlet ⁽²⁾			655 ± 105 kPa (95 ± 15 psi)	655 ± 105 kPa (95 ± 15 psi)
D	Torque converter outlet			520 ± 70 kPa (75 ± 10 psi)	520 ± 70 kPa (75 ± 10 psi) ⁽³⁾
E	Transmission main relief valve	2825 ± 100 kPa (410 ± 15 psi)	2895 ± 100 kPa (420 ± 15 psi)	3035 ± 140 kPa (440 ± 20 psi)	3035 ± 140 kPa (440 ± 20 psi)
G	Brake (left side)	Maximum 10 kPa (1.5 psi)	2750 ± 150 kPa (400 ± 22 psi)	2895 ± 140 kPa (420 ± 20 psi)	Maximum 10 kPa (1.5 psi)
H	Brake (right side)	Maximum 10 kPa (1.5 psi)	2750 ± 150 kPa (400 ± 22 psi)	2895 ± 140 kPa (420 ± 20 psi)	Maximum 10 kPa (1.5 psi)
K	Priority valve ⁽⁴⁾	Maximum 895 kPa (130 psi)	2925 ± 100 kPa (424 ± 15 psi)	Maximum 1035 kPa (150 psi)	Maximum 1035 kPa (150 psi)
L	Transmission lubrication	Minimum 1.0 kPa (0.15 psi)	Minimum 1.0 kPa (0.15 psi)	255 ± 55 kPa (37 ± 8 psi)	255 ± 55 kPa (37 ± 8 psi)
M	Oil temperature	80° ± 5°C (176° ± 9°F)	80° ± 5°C (176° ± 9°F)	80° ± 5°C (176° ± 9°F)	80° ± 5°C (176° ± 9°F)
N	Brake lubrication (front port on right side)	Minimum 7 kPa (1 psi)	Minimum 7 kPa (1 psi)	90 ± 28 kPa (13 ± 4 psi)	90 ± 28 kPa (13 ± 4 psi)

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^( 1 )	The governor control is at the LOW IDLE position.
^( 2 )	The specified pressure is not the relief valve pressure setting. The specified pressure occurs at operating temperatures. This pressure is dependent on the pressure at the torque converter outlet.
^( 3 )	THIRD SPEED FORWARD stall pressure should be 410 ± 70 kPa (60 ± 10 psi).
^( 4 )	The priority valve is at High Pressure if the engine speed is less than 1300 rpm. The valve remains at High Pressure until the engine speed is greater than 1350 rpm. The priority valve is at High Pressure during changes in transmission speed and direction. The priority valve is at High Pressure if oil temperature (M) is less than 40°C (104°F). The valve remains at High Pressure until the oil temperature is greater than 45°C (113°F). The priority valve remains at Low Pressure whenever the parking brake is engaged. Low Pressure is 895 kPa (130 psi).